ORCID Profile
0000-0002-8946-3727
Current Organisations
University of Tasmania
,
University of Technology Sydney
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Publisher: Wiley
Date: 16-05-2007
Publisher: Wiley
Date: 08-02-2011
DOI: 10.1111/J.1461-0248.2010.01578.X
Abstract: The decomposition of plant litter is one of the most important ecosystem processes in the biosphere and is particularly sensitive to climate warming. Aquatic ecosystems are well suited to studying warming effects on decomposition because the otherwise confounding influence of moisture is constant. By using a latitudinal temperature gradient in an unprecedented global experiment in streams, we found that climate warming will likely hasten microbial litter decomposition and produce an equivalent decline in detritivore-mediated decomposition rates. As a result, overall decomposition rates should remain unchanged. Nevertheless, the process would be profoundly altered, because the shift in importance from detritivores to microbes in warm climates would likely increase CO(2) production and decrease the generation and sequestration of recalcitrant organic particles. In view of recent estimates showing that inland waters are a significant component of the global carbon cycle, this implies consequences for global biogeochemistry and a possible positive climate feedback.
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 11-2006
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 2004
DOI: 10.1161/01.STR.0000106480.76217.6F
Abstract: Background and Purpose— The Perindopril Protection Against Recurrent Stroke Study (PROGRESS) showed that blood pressure lowering reduced stroke risk in patients with a history of cerebrovascular events. Here, we report the consistency of treatment effects across different stroke subtypes and among major clinical subgroups. Methods— PROGRESS was a randomized, double-blind trial among 6105 people with a prior history of cerebrovascular events. Participants were assigned to active treatment (perindopril for all participants and indapamide for those with neither an indication for nor a contraindication to a diuretic) or matching placebo(s). Results— During a mean of 3.9 years of follow-up, active treatment reduced the absolute rates of ischemic stroke from 10% to 8% (relative risk reduction [RRR], 24% 95% confidence interval [CI], 10 to 35) and the absolute rates of intracerebral hemorrhage from 2% to 1% (RRR, 50% 95% CI, 26 to 67). The relative risk of any stroke during follow-up was reduced by 26% (95% CI, 12 to 38) among patients whose baseline cerebrovascular event was an ischemic stroke and by 49% (95% CI, 18 to 68) among those whose baseline event was an intracerebral hemorrhage. There was no evidence that treatment effects were modified by other drug therapies (antiplatelet or other antihypertensive agents), residual neurological signs, atrial fibrillation, or the time since the last cerebrovascular event. Conclusions— Beneficial effects of a perindopril-based treatment regimen were observed for all stroke types and all major clinical subgroups studied. These data suggest that effective blood pressure–lowering therapy should be routinely considered for all patients with a history of cerebrovascular events.
Publisher: Wiley
Date: 08-2009
Publisher: CSIRO Publishing
Date: 2017
DOI: 10.1071/MF15329
Abstract: Declining water quality and ecological condition is a typical trend for rivers and streams worldwide as human demands for water resources increase. Managing these natural resources sustainably is a key responsibility of governments. Effective water management policies require information derived from long-term monitoring and evaluation. Biological monitoring and assessment are critical for management because bioassessment integrates the biological, physical and chemical features of a waterbody. Investment in nationally coordinated riverine bioassessment in Australia has almost ceased and the foci of management questions are on more localised assessments. However, rivers often span political and administrative boundaries, and their condition may be best protected and managed under national policies, supported by a coordinated national bioassessment framework. We argue that a nationally coordinated program for the bioassessment of riverine health is an essential element of sustainable management of a nation’s water resources. We outline new techniques and research needed to streamline current arrangements to meet present-day and emerging challenges for coordinating and integrating local, regional and national bioassessment activities. This paper draws on international experience in riverine bioassessment to identify attributes of successful broad-scale bioassessment programs and strategies needed to modernise freshwater bioassessment in Australia and re-establish national broad-scale focus.
Publisher: Wiley
Date: 05-2001
Publisher: Springer Science and Business Media LLC
Date: 30-05-2009
Publisher: Wiley
Date: 06-02-2022
DOI: 10.1111/AEC.13148
Abstract: The introduction of mammalian predators often results in loss of native bio ersity due to naiveté of native prey to novel predators. In New Zealand, an island system with virtually no native mammalian predators, introduced mammalian predators threaten a large proportion of the native fauna. A critical step in adapting to introduced predators is the ability to recognize and respond to a novel predation threat. Whether New Zealand's lizards can do this has received little attention. We compared the basking behaviour of native McCann's skinks ( Oligosoma maccanni ) when exposed to a live cat ( Felis catus ), cat body odour, a model raptor (representing a coevolved predator) or procedural controls. We inferred predator recognition from reductions in in idual basking and higher selection for basking sites with greater refuge availability. We tested these behavioural responses for two skink populations: one from an area with high abundance of mammalian predators including feral cats and the other from a fenced conservation reserve where predators have been excluded for over 10 years (3–4 skink generations). Skinks from the high‐predator population reduced basking when exposed to cat and raptor cues, whereas skinks from the predator‐free population did not. These results suggest that within approximately 150 years of exposure to novel predators, McCann's skinks might be able to recognize the threat posed by invasive mammals. However, they also demonstrate that predator recognition and antipredator behaviours may not necessarily be retained once gained. The rapid loss of basking‐related antipredator behaviours might reflect the high fitness costs of reduced basking for this species. Our results indicate that the behavioural response of skinks is flexible and that skinks may maximize in idual fitness by balancing the risk of predation with the costs of antipredator behaviours.
Publisher: University of Chicago Press
Date: 06-2010
DOI: 10.1899/09-040.1
Publisher: Wiley
Date: 02-2008
Publisher: Wiley
Date: 12-2008
Publisher: Medical Journals Sweden AB
Date: 2007
Abstract: Patients after stroke conventionally receive much of their rehabilitation in hospital. Services have been developed that offer patients an early discharge from hospital with more rehabilitation at home (early supported discharge). This paper sets out a systematic review of all randomized trials of early supported discharge services that included 12 trials (1659 patients). There was a reduced odds of death or dependency equivalent to 5 fewer adverse outcomes (95% confidence interval 1-10) for every 100 patients receiving an early supported discharge service (p = 0.04). Patients receiving early supported discharge services showed an 8 day reduction (p < 0.0001) in the length of hospital stay. The greatest benefits were seen in the trials evaluating a co-ordinated multidisciplinary early supported discharge team and with patients with mild-moderate disability. The experience of a trial from Stockholm is described in order to explore the potential mechanism of action of early supported discharge services. In conclusion, an illustrative case report is set out, indicating a typical patient pathway in an early supported discharge service.
Publisher: Cambridge University Press
Date: 03-01-2002
Abstract: Monitoring Ecological Impacts provides the tools needed by professional ecologists, scientists, engineers, planners and managers to design assessment programs that can reliably monitor, detect and allow management of human impacts on the natural environment. The procedures described are well grounded in inferential logic, and the statistical models needed to analyse complex data are given. Step-by-step guidelines and flow diagrams provide the reader with clear and useable protocols, which can be applied in any region of the world and to a wide range of human impacts. In addition, real ex les are used to show how the theory can be put into practice. Although the context of this book is flowing water environments, especially rivers and streams, the advice for designing assessment programs can be applied to any ecosystem.
Publisher: Society for Vector Ecology
Date: 15-05-2017
DOI: 10.1111/JVEC.12251
Abstract: Two saltmarsh mosquitoes dominate the transmission of Ross River virus (RRV, Togoviridae: Alphavirus), one of Australia's most prominent mosquito-borne diseases. Ecologically, saltmarshes vary in their structure, including habitat types, hydrological regimes, and ersity of aquatic fauna, all of which drive mosquito oviposition behavior. Understanding the distribution of vector mosquitoes within saltmarshes can inform early warning systems, surveillance, and management of vector populations. The aim of this study was to identify the distribution of Ae. c torhynchus, a known vector for RRV, across a saltmarsh and investigate the influence that other invertebrate assemblage might have on Ae. c torhynchus egg dispersal. We demonstrate that vegetation is a strong indicator for Ae. c torhynchus egg distribution, and this was not correlated with elevation or other invertebrates located at this saltmarsh. Also, habitats within this marsh are less frequently inundated, resulting in dryer conditions. We conclude that this information can be applied in vector surveillance and monitoring of temperate saltmarsh environments and also provides a baseline for future investigations into understanding mosquito vector habitat requirements.
Publisher: Elsevier BV
Date: 12-2012
Publisher: Springer Science and Business Media LLC
Date: 05-1984
DOI: 10.1007/BF00006913
Publisher: SAGE Publications
Date: 11-2006
DOI: 10.1111/J.1747-4949.2006.00064.X
Abstract: The looming epidemic of stroke and other chronic non-communicable diseases associated with lifestyle and demographic transitions occurring all over the world is increasingly being acknowledged. However, the significance of these trends in the relatively young populations of the countries comprising Sub-Saharan Africa (SSA) is less certain and considerably overshadowed by attention given to the impact of human immunodeficiency virus and other infectious diseases. We undertook a literature review of the burden of stroke in SSA and provide recommendations for future research. Despite the paucity of high quality studies, the mostly hospital-based data and limited community surveys indicate there to be high and increasing rates of stroke affecting people at much younger ages in SSA than in developed countries. In general, awareness, diagnosis and management of stroke are poor, and the associated case fatality and residual disability are high. As elsewhere, elevated blood pressure is the major determinant of stroke but there are also high rates of strokes related to the complications of rheumatic heart disease and other infections. Given high attributable risks exposures in association with rapid ageing and urbanisation in SSA, the future is not bright. Population-based incidence studies are urgently needed to map the profile and outcome of stroke. Such data would provide the necessary evidence base to improve prevention and treatments for stroke alongside current efforts to bring infectious diseases under control in SSA.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 03-2004
DOI: 10.1161/01.STR.0000116183.50167.D9
Abstract: Background and Purpose— Limited information exists on the long-term prognosis after first-ever stroke. We aimed to determine the absolute frequency of first recurrent stroke and disability and the relative frequency of recurrent stroke over 10 years after first-ever stroke in Perth, Western Australia. Methods— For a 12-month period beginning February 1989, all in iduals with suspected acute stroke or transient ischemic attack who lived in a geographically defined and representative region of Perth were registered prospectively. Patients with a definite first-ever stroke were followed up 10 years after the index event. Results— Over 10 years of follow-up, the cumulative risk of a first recurrent stroke was 43% (95% confidence interval [CI], 34 to 51). After the first year after first-ever stroke, the average annual risk of recurrent stroke was ≈4%. Case fatality at 30 days after first recurrent stroke was 41%, which was significantly greater than the case fatality at 30 days after first-ever stroke (22%) ( P =0.003). For 30-day survivors of first-ever stroke, the 10-year cumulative risk of death or new institutionalization was 79% (95% CI, 73 to 85) and of death or new disability was 87% (95% CI, 81 to 92). Conclusions— Over 10 years of follow-up, the risk of first recurrent stroke is 6 times greater than the risk of first-ever stroke in the general population of the same age and sex, almost one half of survivors remain disabled, and one seventh require institutional care. Effective strategies for prevention of stroke need to be implemented early, monitored frequently, and maintained long term after first-ever stroke.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 04-2002
DOI: 10.1161/01.STR.0000012515.66889.24
Abstract: Background and Purpose — Few reliable estimates of the long-term functional outcome after stroke are available. This population-based study aimed to describe disability, dependency, and related independent prognostic factors at 5 years after a first-ever stroke in patients in Perth, Western Australia. Methods — All in iduals with a suspected acute stroke who were resident in a geographically defined region (population, 138 708) of Perth, Western Australia, were registered prospectively and assessed according to standardized diagnostic criteria over a period of 18 months in 1989 to 1990. Patients were followed up prospectively at 4 and 12 months and 5 years after the index event. Results — There were 370 cases of first-ever stroke, and 277 patients survived to 30 days. Of these early survivors, 152 (55%) were alive at 5 years, and among those who were neither institutionalized (n=146) nor disabled (n=129) at the time of their stroke, 21 (14%) were institutionalized in a nursing home, and 47 (36%) were disabled. The most important predictors of death or disability at 5 years were increasing age, baseline disability defined by a Barthel Index score of /20 (odds ratio [OR], 6.3 95% confidence interval [CI], 2.7 to 14), moderate hemiparesis (OR, 2.7 95% CI, 1.1 to 6.2), severe hemiparesis (OR, 4.5 95% CI, 1.1 to 19), and recurrent stroke (OR, 9.4 95% CI, 3.0 to 30). A low level of activity before the stroke was a significant predictor of institutionalization, and subsequent recurrent stroke was a consistent, independent predictor of institutionalization, disability, and death or institutionalization, increasing the odds of each of these 3 adverse outcomes by 5- to 15-fold. Conclusions — Among 30-day survivors of first-ever stroke, about half survive 5 years of survivors, one third remain disabled, and 1 in 7 are in permanent institutional care. The major modifiable predictors of poor long-term outcome are a low level of activity before the stroke and subsequent recurrent stroke. Efforts to increase physical activity among the elderly and to prevent recurrent stroke in survivors of a first stroke are likely to reduce the long-term burden of cerebrovascular disease.
Publisher: Springer Science and Business Media LLC
Date: 27-10-2007
Publisher: S. Karger AG
Date: 1994
DOI: 10.1159/000108506
Publisher: Elsevier BV
Date: 10-2004
Publisher: Springer Science and Business Media LLC
Date: 06-08-2004
DOI: 10.1007/S00442-004-1644-X
Abstract: We investigated the role of freshwater macrophytes as refuge by testing the hypothesis that predators capture fewer prey in more dense and structurally complex habitats. We also tested the hypothesis that habitat structure not only affects the prey-capture success of a single predator in isolation, but also the effectiveness of two predators combined, particularly if it mediates interactions between the predators. We conducted a fully crossed four-factorial laboratory experiment using artificial plants to determine the separate quantitative (density) and qualitative (shape) components of macrophyte structure on the prey-capture success of a predatory damselfly, Ischnura heterosticta tasmanica, and the southern pygmy perch, Nannoperca australis. Contrary to our expectations, macrophyte density had no effect on the prey-capture success of either predator, but both predators were significantly less effective in the structurally complex Myriophyllum analogue than in the structurally simpler Triglochin and Eleocharis analogues. Furthermore, the greater structural complexity of Myriophyllum lified the impact of the negative interaction between the predators on prey numbers the habitat use by damselfly larvae in response to the presence of southern pygmy perch meant they captured less prey in Myriophyllum. These results demonstrate habitat structure can influence multiple predator effects, and support the mechanism of increased prey refuge in more structurally complex macrophytes.
Publisher: MDPI AG
Date: 06-06-2023
DOI: 10.3390/EN16124540
Publisher: International Union Against Tuberculosis and Lung Disease
Date: 21-06-2014
DOI: 10.5588/PHA.13.0091
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 05-2005
DOI: 10.1161/01.STR.0000162391.27991.9D
Abstract: Background and Purpose— Although depression may affect recovery and outcome after stroke, it is often overlooked or inadequately managed, and there is uncertainty regarding the benefits of antidepressant therapy in this setting. We aimed to assess the effectiveness of antidepressants for the treatment and prevention of depression after stroke. Methods— We undertook a systematic review using Cochrane methods of randomized placebo-controlled trials of antidepressants for the treatment or prevention of depressive illness and “abnormal mood” after stroke. Treatment effects on physical and other outcomes were also examined. Results— Outcome data were available for 7 treatment trials including 615 patients and 9 prevention trials including 479 patients. Because of the considerable variation in research design, trial quality, and method of reporting across studies, we did not pool all the outcome data. In the treatment trials, antidepressants reduced mood symptoms but had no clear effect on producing a remission of diagnosable depressive illness. There was no definitive evidence that antidepressants prevent depression or improve recovery after stroke. Conclusions— There is insufficient randomized evidence to support the routine use of antidepressants for the prevention of depression or to improve recovery from stroke. Although antidepressants may improve mood in stroke patients with depression, it is unclear how clinically significant such modest effects are in patients other than those with major depression. There is a pressing need for further research to better define the role of antidepressants in stroke management.
Publisher: Wiley
Date: 06-1990
Publisher: CSIRO Publishing
Date: 1990
DOI: 10.1071/MF9900557
Abstract: Patches of large and small pebbles were created in three riffles (fast current velocities) and three pools (slow velocities). It was expected that patches with different sizes of pebbles in the two velocity regimes would vary in the entrapment of fine sediments and organic matter, which in turn would result in differences in benthic community structure. This was not the case, for although deposition of fine material was greater in pools, there were appreciable location-specific differences in the fauna unrelated to the variables monitored in the experiment. Functional feeding groups did not respond predictably to the distribution of detritus. Generally, the community was least influenced by substratum size, with any differences being inconsistent across locations. Most other substratum effects were attributable to the presence of epilithon on undisturbed control patches. Velocity was the most influential factor, with riffles having higher total abundances and higher species richness. Some taxa showed strong location- specific differences. At the level of a small patch of pebbles, the colonization dynamics of the fauna are probably a mixture of species- and location-specific dispersal and selection mechanisms. At larger spatial scales, however, community structure is more predictable, with pools differing substantially from riffles.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 10-2005
DOI: 10.1161/01.STR.0000183622.75135.A4
Abstract: Background and Purpose— Although depression is common after stroke, there is uncertainty over its etiology and risk factors, which complicates management. Knowledge of the predictors of depression associated with stroke may allow for the better targeting of therapy, both prevention and treatment. Methods— We undertook a systematic review of all published, nonexperimental, population-, hospital-, and rehabilitation-based stroke studies (to June 2004) with prospective, consecutive patient recruitment undertaken to identify variables associated with depressive symptoms (or “illness”) after stroke. Assessments were made of the quality of studies including the validity of prognostic models. Results— Data were available from 3 population-based studies including 492 patients, 8 hospital-based studies including 15 272 patients, and 9 rehabilitation-based studies including 2170 patients. Physical disability, stroke severity and cognitive impairment were consistently associated with depression. In addition to the common problem of selection bias, major limitations of these studies included variable selection and poor statistical quality and reporting small s le sizes meant that only a limited range of variables were analyzed in multivariate models. Conclusions— There is a paucity of well-designed studies of sufficient size to allow stable multivariate predictive models of depression after stroke to be developed. Other than showing that depression is associated with more severe strokes, current evidence does not allow for ready identification of patients most at risk of developing this important complication of stroke.
Publisher: BMJ
Date: 10-1994
Abstract: The validity of a clinical classification system was assessed for subtypes of cerebral infarction for use in clinical trials of putative stroke therapies and clinical decision making in a population based stroke register (n = 536) compiled in Perth, Western Australia in 1989-90. The Perth Community Stroke Project (PCSS) used definitions and methodology similar to the Oxfordshire Community Stroke Project (OCSP) where the classification system was developed. In the PCSS, 421 cases of cerebral infarction and primary intracerebral haemorrhage (PICH), confirmed by brain imaging or necropsy, were classified into the subtypes total anterior circulation syndrome (TACS), partial anterior circulation syndrome (PACS), lacunar syndrome (LACS), and posterior circulation syndrome (POCS). In this relatively unselected population, relying exclusively on LACS for a diagnosis of PICH had a very low sensitivity (6%) and positive predictive value (3%). Comparison of the frequencies and outcomes (at one year after the onset of symptoms) for each subgroup of first ever cerebral infarction in the PCSS (n = 248) with the OCSP (n = 543) registers showed uniformity only for LACI. For ex le, there were 27% of cases of TACI in the PCSS compared with 17% in the OCSP (difference = 10% 95% confidence interval (95% CI) 4% to 16%) and 15% of cases in the PCSS compared with 24% in the OCSP were POCI (difference = 9% 95% CI 3% to 15%). Case fatalities and long-term handicap across the subgroups were not significantly different between studies, but the frequencies of recurrent stroke were significantly greater for POCI in the OCSP compared with the PCSS. Although this classification system defines subtypes of stroke with different outcomes, simple clinical measures-level of consciousness, paresis, disability, and incontinence at onset-are more powerful predictors of death or dependency at one year. It is concluded that simple clinical measures that reflect the severity of the neurological deficit should complement this classification system in clinical trials and practice.
Publisher: MDPI AG
Date: 07-05-2020
Abstract: Aerosols from Western Australia supply micronutrient trace elements including Fe into the western shelf of Australia and further afield into the Southern and Indian Oceans. However, regional observations of atmospheric trace metal deposition are limited. Here, we applied a series of leaching experiments followed by total analysis of bulk aerosol s les to a unique time-series of aerosol s les collected in Western Australia to determine atmospheric concentrations and solubilities of Fe and V, Mn, Co, Zn, and Pb. Positive matrix factorisation analysis indicated that mineral dust, biomass burning particulates, sea salt, and industrial emissions were the major types of aerosols. Overall, natural sources dominated Fe deposition. Higher atmospheric concentrations of mineral dust (sixfold) and biomass burning emissions were observed in warmer compared to cooler months. The fraction of labile Fe (0.6–6.0%) was lower than that reported for other regions of Australia. Bushfire emissions are a temporary source of labile Fe and may cause a peak in the delivery of its more easily available forms to the ocean. Increased labile Fe deposition may result in higher ocean productivity in regions where Fe is limiting, and the effect of aerosol deposition on ocean productivity in this region requires further study.
Publisher: Wiley
Date: 09-2022
DOI: 10.1002/PAN3.10378
Abstract: Competing land‐use demands for agriculture and nature conservation is one of the most significant global challenges. To improve the health of landscapes, collaborative transdisciplinary solutions are required. Environmental accounting is an attractive governance approach for helping to deliver healthy future landscapes however, the ersity of approaches to environmental accounting makes this field complex to navigate, which limits transdisciplinary collaboration and impedes implementation. We seek to address this issue by presenting a new framework to clarify environmental accounting. This framework classifies the currently disparate branches of the literature into four newly described environmental accounting types: Organisational Environmental Management Accounting, Organisational Environmental Reporting Accounting, Area Environmental Management Accounting and Area Environmental Reporting Accounting. The framework is then used to discuss, across multiple scales (organisational, ecosystem and national), existing environmental accounting tools which could assist in delivering healthy future landscapes, and areas for future research. Finally, we demonstrate the potential for environmental accounting research approaches (materiality assessment, dialogic accounting and critical accounting) to assist in defining healthy future landscapes. This paper presents the first substantial exploration of environmental accounting in the landscapes context and presents a research agenda to progress this exciting area of transdisciplinary research. Read the free Plain Language Summary for this article on the Journal blog.
Publisher: Informa UK Limited
Date: 1994
Publisher: Wiley
Date: 18-10-2011
Publisher: Wiley
Date: 31-08-2018
DOI: 10.1111/EMR.12338
Publisher: Wiley
Date: 09-2002
DOI: 10.1046/J.1468-1331.2002.00455.X
Abstract: The aim of the present meta-analysis was to determine a temporal pattern of occurrence of subarachnoid haemorrhage (SAH). A MEDLINE 1966-2001 and EMBASE (1980-2001) literature search and hand search of relevant references were performed for population-based incidence studies that reported the time of SAH occurrence. Data from all identified relevant studies were combined into a pooled rate ratio (RR), with corresponding 95% confidence intervals (CI) using the Mantel-Haenszel method. Overall, eight population-based studies were included in the analysis. A total of 2533 first-ever cases of SAH were reported in the studies identified. Risk of SAH occurrence was the highest in the period between 6 am and 12 am (RR = 3.19 95% CI 3.03-3.36 early morning as a reference variable) and between 12 p.m. and 6 p.m. (RR = 2.63 95% CI 2.47-2.80), in winter and spring (RR = 1.10 95% CI: 1.02-1.17 and RR = 1.07 95% CI: 1.01-1.13, respectively summer as a reference variable) and on Sunday (RR = 1.22 95% CI 1.09-1.37 Monday as a reference variable). The evidence suggests that occurrence of SAH exhibits a seasonal (winter and spring) peak, diurnal (late morning peak) and daily (Sunday peak) pattern. It is suggested that the occurrence of some major acute vascular events (total ischaemic strokes, intracerebral haemorrhage and myocardial infarction) may be influenced by common triggering factors.
Publisher: Wiley
Date: 23-05-2012
Publisher: CSIRO Publishing
Date: 2011
DOI: 10.1071/MF10298
Abstract: The loss of connectivity in intermittent streams can limit aquatic-invertebrate access to food resources, with different resources available in in idual pools. Although leaf litter was abundant in the Macquarie River in Tasmania, stable carbon and nitrogen isotope analyses suggested that aquatic macrophytes were more prevalent in shredding macroinvertebrate diets. We tested this result with two multi-choice trials, which examined the feeding preferences of Atalophlebia albiterminata (Ephemeroptera) and the case-building trichopterans Lectrides varians, Notalina bifaria, Triplectides similis and T. ciuskus ciuskus. We first tested preferences for the dominant benthic leaf species (Acacia mucronata, Eucalyptus amygdalina, E. barberi, E. obliqua and E. viminalis). We hypothesised that macroinvertebrates would preferentially select leaves with lower chemical concentrations. However, there were no strong preferences for conditioned leaves by any invertebrate, although the leaves varied in toughness, tannin, nitrogen and allelochemical content. Second, we examined the preferences for E. amygdalina and E. barberi leaves or the fresh macrophytes Triglochin procerum, Myriophyllum salsugineum and Potamogeton tricarinatus. Macrophytes were preferred over leaves by all invertebrates, with T. procerum significantly preferred over the other macrophytes. This suggests that macrophytes may be undervalued in riverine food webs, and should be included in analyses of food webs using stable isotopes.
Publisher: Wiley
Date: 08-05-2021
DOI: 10.1002/EDN3.204
Abstract: The giant freshwater crayfish, Astacopsis gouldi Clark, 1936, is an endangered endemic freshwater species native to Northern Tasmania. Habitat loss, fishing pressure, and climate change have been identified as threatening processes. The Australian government approved a recovery plan for A. gouldi in 2017 that requires routine population surveys to assess the impact of ongoing threats and recovery actions. We developed a novel species‐specific probe‐based assay targeting a 219 bp fragment in the Cytochrome Oxidase 1 gene region to detect traces of A. gouldi DNA in environmental s les as a cost‐effective, sensitive, and non‐invasive surveillance method to assess the presence of this endangered species. We tested assay specificity against ten crayfish species commonly found in Tasmania within the Astacopsis , Cherax , Geocharax , Engaeus , and Ombrastacoides genera and determined assay sensitivity using tissue‐derived genomic DNA and synthetic oligo standards designed for A . gouldi . We then tested water s les collected from aquaria and natural freshwater streams in Northern Tasmania with known occurrence of A. gouldi , as well as one site with no known A. gouldi occurrence. The probe‐based assay designed in this study successfully detected A. gouldi DNA and eDNA with a 10 copies/µl limit of detection and showed no lification of non‐targeted co‐existing crayfish species. We successfully detected the presence of A. gouldi eDNA in water s les from six sites with known occurrences of the species. There was no detection from the negative site. This study validates the use of eDNA‐based detection of A. gouldi by real‐time PCR as a non‐invasive monitoring tool to assist field monitoring, assessment, and complement ongoing recovery actions to protect habitable ecosystems of A. gouldi .
Publisher: Wiley
Date: 12-2007
Publisher: Elsevier BV
Date: 03-2005
DOI: 10.1016/J.JNS.2004.11.020
Abstract: There is increasing evidence that both hypertension and stroke play important roles in the development of cognitive decline and dementia. Despite five high-quality randomised controlled trials (RCTs) in this area to date, there remains uncertainty about the role of blood pressure lowering therapy in the prevention of cognitive decline and dementia. It appears that lack of definitive results from these trials can be explained on the basis of (a) insufficient power to detect modest treatment effects (b) measurement error in the diagnosis of dementia (c) variations in the treatment effects between different types of antihypertensive agents and (d) bias due to missing data, variation in baseline factors such as levels of blood pressure, and the inclusion of patients with cognitive impairment at entry. Preliminary meta-analysis of RCTs supports the hypothesis that blood pressure lowering may prevent dementia in high-risk patients, that is those with vascular disease. However, a meta-analysis of in idual patient data (IPD) from these, and other relevant trials in patients with vascular disease, would provide much more reliable data. If the hypothesis were confirmed, it would certainly be of considerable importance not only in terms of our understanding of the aetiology of dementia, but also in promoting blood pressure lowering strategies for broader public health good.
Publisher: Wiley
Date: 20-02-2003
DOI: 10.1046/J.1532-5415.2003.51101.X
Abstract: To determine the effectiveness of vitamin D and home-based quadriceps resistance exercise on reducing falls and improving the physical health of frail older people after hospital discharge. Multicenter, randomized, controlled trial with a factorial design. Five hospitals in Auckland, New Zealand, and Sydney, Australia. Two hundred forty-three frail older people. Patients were randomized to receive a single dose of vitamin D (calciferol, 300,000 IU) or placebo tablets and 10 weeks of high-intensity home-based quadriceps resistance exercise or frequency-matched visits. The primary endpoints were physical health according to the short-form health survey at 3 months and falls over 6 months. Physical performance and self-rated function were secondary endpoints. Assessments took place in the participants' homes at 3 and 6 months after randomization and were performed by blinded assessors. There was no effect of either intervention on physical health or falls, but patients in the exercise group were at increased risk of musculoskeletal injury (risk ratio = 3.6, 95% confidence interval = 1.5-8.0). Vitamin D supplementation did not improve physical performance, even in those who were vitamin D deficient (<12 ng/mL) at baseline. Neither vitamin D supplementation nor a home-based program of high-intensity quadriceps resistance exercise improved rehabilitation outcomes in frail older people after hospitalization. There was no effect of vitamin D on physical performance, and the exercises increased the risk of musculoskeletal injury. These findings do not support the routine use of these interventions at these dosages in the rehabilitation of frail older people.
Publisher: Informa UK Limited
Date: 06-1982
Publisher: SAGE Publications
Date: 04-2006
DOI: 10.1191/0269215506CR946OA
Abstract: Objective: There is continued uncertainty regarding the strength of association between performance-based and self-report measures of physical functioning, and of their relationship to self-efficacy and health-related quality of life (HRQoL). This study assessed the inter-relationships between such measures, and the predictors of ‘physical’ aspects of HRQoL in frail older patients. Design: We used statistical models to determine the predictors of ‘physical’ HRQoL, according to the physical component summary score and the physical functioning domain of the 36-item short form (SF-36) questionnaire. Setting: Patients were recruited from hospitals in Australia and New Zealand and followed up in their homes. Subjects: Two hundred and forty-three frail older patients. Main measures: Physical functioning was assessed using three performance-based measures (Timed Up and Go Test, gait speed and the Berg Balance Scale) and five self-report measures, including the modified falls self-efficacy scale, at three and six months after registration. Results: A moderate association (r=0.48=0.55) was found between each of the performance-based and self-report measures, including the SF-36 physical component summary score. Multiple linear regression analyses showed that the performance-based measures and falls self-efficacy predicted 33% of the SF-36 physical component summary score. Falls self-efficacy was the single highest predictor of both the SF-36 physical component summary score and SF-36 physical functioning domain. A curvilinear relationship was found between the SF-36 physical functioning domain and two variables: falls self-efficacy and the Berg Balance Scale. Conclusions: Although performance-based and self-report measures provide complementary but distinct measures of physical function, psychosocial factors such as self-efficacy have a strong influence on the HRQoL of frail older people.
Publisher: S. Karger AG
Date: 16-11-2007
DOI: 10.1159/000097054
Abstract: i Background: /i There is uncertainty regarding the impact of changes in stroke care and natural history of stroke in the community. We examined factors responsible for trends in survival after stroke in a series of population-based studies. i Methods: /i We used statistical models to assess temporal trends in 28-day and 1-year case fatality after first-ever stroke cases registered in 3 stroke incidence studies undertaken in Auckland, New Zealand, over uniform 12-month calendar periods in 1981–1982 (n = 1,030), 1991–1992 (1,305) and 2001–2002 (1,423). Cox proportional hazards regression was used to evaluate the significance of pre-defined ‘patient’, ‘disease’ and ‘service/care’ factors on these trends. i Results: /i Overall, there was a 40% decline in 28-day case fatality after stroke over the study periods, from 32% (95% confidence interval, 29–35%) in 1981–1982 to 23% (21–25%) in 1991–1992 and then 19% (17–21%) in 2002–2003. Similar relative declines were seen in 1-year case fatality. In regression models, the trends were still significant after adjusting for patient and disease factors. However, further adjustment for care factors (higher hospital admission and neuroimaging) explained most of the improvement in survival. i Conclusions: /i These data show significant downwards trends in case fatality after stroke in Auckland over 20 years, which can largely be attributed to improved stroke care associated with increases in hospital admission and brain imaging during the acute phase of the illness.
Publisher: Schweizerbart
Date: 10-04-2002
Publisher: S. Karger AG
Date: 1994
DOI: 10.1159/000110392
Abstract: This paper reviews the methodological issues in the epidemiological study of the outcome from stroke. Data are presented from an unselected series of patients in whom the underlying stroke pathology is clearly defined. Although the natural history varies among the different pathological subtypes of stroke, simple clinical baseline measures of the severity of the neurological deficit (incontinence, loss of consciousness and severity of paresis) and premorbid level of disability and social functioning independently predict disability-free survival by 1 year, and may help direct management and research.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3AY00278K
Abstract: This work describes a fast, simple, and environmentally friendly method based on ultrasound probe extraction (UPS) and IC-MS analysis for the quantitation of levoglucosan and its isomers in sediments.
Publisher: Springer Science and Business Media LLC
Date: 25-11-2009
Publisher: Wiley
Date: 28-11-2005
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 07-2003
DOI: 10.1161/01.STR.0000077015.90334.A7
Abstract: Background and Purpose— Unaccustomed strenuous physical exertion can trigger myocardial infarction, but little is known about the mechanisms precipitating subarachnoid hemorrhage (SAH). Methods— We identified all cases of first-ever SAH among the combined populations (2.8 million) of 4 urban centers in Australia and New Zealand. Information on the type, time, and intensity of exposures in the 26 hours before the onset of SAH was ascertained by structured interviews. We used the case-crossover technique to assess the risk of SAH associated with transient exposures of moderate to extreme physical exertion, heavy cigarette smoking, and binge alcohol consumption. Results— We registered 432 first-ever cases of SAH (62% women mean age, 56.5 years). A definite time of onset of SAH was established for 393 patients (91%), and information on the levels of physical activity in the preceding 26 hours was obtained in 338 (78%). Of these patients, 19% engaged in moderate to extreme exertion (≥5 metabolic equivalents) in the 2 hours before SAH, which was associated with a tripling in the risk of SAH (odds ratio [OR], 2.7 95% CI, 1.6 to 4.6). There was no evidence of any association between heavy cigarette smoking or binge drinking and risk of SAH in the subsequent 2 hours (OR, 1.1 95% CI, 0.4 to 3.7 and OR, 0.41 95% CI, −∞ to 5.3). Habitual exercise did not appear to alter the risk of SAH associated with moderate to extreme exertion. Conclusions— Moderate to extreme physical exertion tripled the risk of SAH, but there was no association between transient heavy smoking or binge drinking and risk of SAH. These data suggest that heavy physical activity may trigger SAH.
Publisher: Springer Science and Business Media LLC
Date: 13-11-2017
DOI: 10.1038/S41598-017-15507-1
Abstract: Stromatolites are the oldest evidence for life on Earth, but modern living ex les are rare and predominantly occur in shallow marine or (hyper-) saline lacustrine environments, subject to exotic physico-chemical conditions. Here we report the discovery of living freshwater stromatolites in cool-temperate karstic wetlands in the Giblin River catchment of the UNESCO-listed Tasmanian Wilderness World Heritage Area, Australia. These stromatolites colonize the slopes of karstic spring mounds which create mildly alkaline (pH of 7.0-7.9) enclaves within an otherwise uniformly acidic organosol terrain. The freshwater emerging from the springs is Ca-HCO 3 dominated and water temperatures show no evidence of geothermal heating. Using 16 S rRNA gene clone library analysis we revealed that the bacterial community is dominated by Cyanobacteria, Alphaproteobacteria and an unusually high proportion of Chloroflexi, followed by Armatimonadetes and Planctomycetes, and is therefore unique compared to other living ex les. Macroinvertebrates are sparse and snails in particular are disadvantaged by the development of debilitating accumulations of carbonate on their shells, corroborating evidence that stromatolites flourish under conditions where predation by metazoans is suppressed. Our findings constitute a novel habitat for stromatolites because cool-temperate freshwater wetlands are not a conventional stromatolite niche, suggesting that stromatolites may be more common than previously thought.
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/MF01222
Abstract: A method is described for making rapid in situ field measurements of riverbed topography over spatial scales of ≅1–10 m. This method uses rolling balls to make quick, accurate measurements of river-bed roughness at several spatial scales. Random s ling and replication generate multiple estimates of the fractal dimension (d) that can be used to test for significant differences in the complexity of riverbed architecture between habitat types and spatial scales.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 08-2006
DOI: 10.1161/01.STR.0000231387.58943.1F
Abstract: Background and Purpose— Mood disorders are an important consequence of stroke. We aimed to identify significant, clinically useful predictors of abnormal mood after stroke. Methods— The Auckland Regional Community Stroke (ARCOS) study was a prospective population-based stroke incidence study conducted in Auckland, New Zealand, over a 12-month period from 2002 to 2003. All patients were followed up 6 months after stroke onset and abnormal mood was assessed using the 28-item General Health Questionnaire (GHQ-28) administered as part of a structured telephone interview. Multivariate stepwise logistic regression was used to develop a predictive model for “caseness” (score of ≥5 on the GHQ-28) based on several premorbid patient and clinical variables assessed at baseline and 28 days of follow up. Results— Of patients available at 6 months (n=1172), complete data on mood was available from 739 (60%) patients and 27% (95% confidence interval, 24 to 30%) were defined as cases. Key baseline predictors of abnormal mood were disability and history of depression after adjustment for sex, age, and comorbidity, but the model failed to predict a large amount of the variation in caseness ( C statistic 0.587). Conclusion— This study emphasizes the complex nature of mood disturbance after stroke and that multiple factors are likely to contribute to mood disorders. A simple, clinically applicable, predictive model in stroke care appears difficult to develop.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 08-2004
DOI: 10.1161/01.STR.0000133130.20322.9F
Abstract: Background and Purpose— Limited information exists on the long-term outcome from stroke. We aimed to determine survival and health status at 21-year follow-up of patients who participated in a population-based stroke incidence study undertaken in Auckland, New Zealand. Methods— During 12 months beginning March 1, 1981, half of all residents of Auckland with acute first-ever or recurrent stroke (n=680) were assessed and followed up prospectively during the next 2 decades. In 2002, their vital status and health-related quality of life (HRQoL) using the 36-item short-form questionnaire (SF-36) were determined by telephone interviews. Kaplan–Meier survival probabilities for the stroke cohort were compared with life table estimates for the New Zealand population. The SF-36 profile of 21-year stroke survivors was compared with a standardized New Zealand population. Results— Overall, 626 of the original cohort had died and 4 were lost to follow-up, leaving 50 (7%) in iduals (57% male mean age 70 years) available in 2002, of whom 12% were residents of an institutional care facility and 19% required help with everyday activities. The stroke cohort had nearly twice the mortality rate of the New Zealand population, but the SF-36 profile of very long-term stroke survivors was broadly similar to the general population. Conclusions— Because stroke is generally a disease of older people and has a high case fatality, it is not surprising that in 10 people survive 2 decades after onset. However, of those who do, their HRQoL profile suggests that they meld relatively successfully within the general population, despite ongoing disability and a higher mortality risk.
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 2003
DOI: 10.1016/S1474-4422(03)00266-7
Abstract: This overview of population-based studies of incidence, prevalence, mortality, and case-fatality of stroke was based on studies from 1990. Incidence (first stroke in an in idual's lifetime) and prevalence were computed by age, sex, and stroke type. Age-standardised incidence and prevalence with the corresponding 95% CI were plotted for each study to facilitate comparisons. The review shows that the burden of stroke is high and is likely to increase in future decades as a result of demographic and epidemiological transitions in populations. The main features of stroke epidemiology include modest geographical variation in incidence, prevalence, and case-fatality among the--predominantly white--populations studied so far, and a stabilisation or reversal in the declining secular trends in the pre-1990s rates, especially in older people. However, further research that uses the best possible methods to study the incidence, risk factors, and outcome of stroke are urgently needed in other populations of the world, especially in less developed countries where the risk of stroke is high, lifestyles are changing rapidly, and population restructuring is occurring.
Publisher: Wiley
Date: 03-1998
Publisher: Springer Science and Business Media LLC
Date: 2003
DOI: 10.2165/00002512-200320040-00001
Abstract: Blood pressure levels are strongly predictive of the risks of first-ever and recurrent stroke. The benefits of blood pressure-lowering therapy for the prevention of fatal and non-fatal stroke in middle-aged in iduals are well established. However, until recently, there has been uncertainty about the consistency of such benefits across different patient groups and in particular, for older people and in those with a history of stroke. This paper discusses the evidence surrounding the effectiveness of blood pressure-lowering therapy, specifically in older patients with a history of stroke, with particular attention paid to the results from the Perindopril Protection Against Recurrent Stroke Study (PROGRESS). PROGRESS was a randomised, double-blind, placebo-controlled trial of 6105 in iduals with a history of cerebrovascular disease recruited from 172 hospital outpatient clinics in ten countries. Participants (mean age 64 years range 26-91 years) were randomly assigned to receive active treatment with an ACE inhibitor-based blood pressure-lowering regimen (perindopril) with or without addition of the diuretic indapamide, or matched placebo. At the end of follow up (mean of 4 years), active treatment reduced the incidence of total stroke by 28% (95% CI 17-38%) and the rate of major vascular events by 26% (95% CI 16-34%). Importantly, benefits of treatment were consistent across key patient subgroups, including those with and without hypertension, patients who were Asian and non-Asian, and for both ischaemic and haemorrhagic strokes subtypes. Current evidence is now strong for clinicians to consider blood pressure-lowering therapy as pivotal in the prevention of stroke, especially in patients with a known history of cerebrovascular disease (and vascular disease, in general), irrespective of blood pressure levels, as soon as patients are clinically stable after an acute stroke or other vascular event. Additional age-specific analyses of the PROGRESS data, together with those from other completed trials, will provide more reliable information about the size of the benefits of blood pressure-lowering therapy, specifically for different age groups, and particularly in the oldest old (those aged >80 years). In the meantime though, an ACE inhibitor plus diuretic treatment regimen that maximises the degree of blood pressure reduction has a good safety profile and is an effective treatment that should be considered in all patients with stroke, including the elderly.
Publisher: Springer Science and Business Media LLC
Date: 05-09-2017
DOI: 10.1038/S41598-017-10640-3
Abstract: Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait variation for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of litter and green leaves to erge. Here we present the first global-scale assessment of riparian litter quality by determining latitudinal variation (spanning 107°) in litter traits (nutrient concentrations physical and chemical defences) of 151 species from 24 regions and their relationships with environmental factors and phylogeny. We hypothesized that litter quality would increase with latitude (despite variation within regions) and traits would be correlated to produce ‘syndromes’ resulting from phylogeny and environmental variation. We found lower litter quality and higher nitrogen:phosphorus ratios in the tropics. Traits were linked but showed no phylogenetic signal, suggesting that syndromes were environmentally determined. Poorer litter quality and greater phosphorus limitation towards the equator may restrict detritivore-mediated decomposition, contributing to the predominance of microbial decomposers in tropical streams.
Publisher: University of Chicago Press
Date: 03-1997
DOI: 10.2307/1468250
Publisher: BMJ
Date: 20-06-2006
Publisher: Oxford University Press (OUP)
Date: 17-06-2020
Abstract: Bacteria, fungi, and other microorganisms in the environment (i.e., environmental microbiomes) provide vital ecosystem services and affect human health. Despite their importance, public awareness of environmental microbiomes has lagged behind that of human microbiomes. A key problem has been a scarcity of research demonstrating the microbial connections across environmental biomes (e.g., marine, soil) and between environmental and human microbiomes. We show in the present article, through analyses of almost 10,000 microbiome papers and three global data sets, that there are significant taxonomic similarities in microbial communities across biomes, but very little cross-biome research exists. This disconnect may be hindering advances in microbiome knowledge and translation. In this article, we highlight current and potential applications of environmental microbiome research and the benefits of an interdisciplinary, cross-biome approach. Microbiome scientists need to engage with each other, government, industry, and the public to ensure that research and applications proceed ethically, maximizing the potential benefits to society.
Publisher: Wiley
Date: 20-02-2020
DOI: 10.1111/MVE.12433
Abstract: Saltmarsh breeding mosquitoes are an important source of vectors for arboviral transmission. In southern Australia, the most prominent vector borne disease, Ross River virus (Togaviridae: Alphavirus ) (RRV), is transmitted by the saltmarsh mosquito (Diptera: Culicidae) Aedes c torhynchus (Thomson). However, the factors driving the abundance of this mosquito within and among saltmarshes are poorly understood. To predict the abundance of this mosquito within saltmarshes, the environmental conditions and aquatic invertebrate ecology of three temperate saltmarshes habitats were monitored over two seasons. Up to 44% of first‐instar mosquito numbers and 21% of pupal numbers were accounted for by environmental variables. S hire vegetation cover was a common predictor of first‐instar numbers across sites although, between saltmarshes, aquatic factors such as high salinity, temperatures less than 22 °C and water body volume were important predictors. The identified predictors of pupal numbers were more variable and included high tides, waterbody volume and alkalinity. The composition of invertebrate functional feeding groups differed between saltmarshes and showed that an increased ersity led to fewer mosquitoes. It was evident that apparently similar saltmarshes can vary markedly in invertebrate assemblages, water availability and conditions through tidal inundations, rainfall or waterbody permanency. The present study advances insight into predictors of vector mosquito numbers that drive the risk of RRV outbreaks.
Publisher: Elsevier BV
Date: 09-2014
Publisher: Elsevier BV
Date: 02-2006
Publisher: Wiley
Date: 15-11-2006
Publisher: University of Chicago Press
Date: 09-2013
DOI: 10.1899/12-163.1
Publisher: CSIRO Publishing
Date: 2011
DOI: 10.1071/MF09297
Abstract: Concentration of human populations with likely impacts of climate change present major challenges for river conservation in the south-eastern coastal region of Australia. Quantitative methods for spatial prioritisation of conservation actions can play a major role in meeting these challenges. We examined how these methods may be applied to help plan for potential impacts of climate change in the region, using macroinvertebrate assemblages as surrogates of river bio ersity. Environmental gradients explaining broad-scale patterns in the composition of macroinvertebrate assemblages are well represented in protected areas however, their effectiveness for conserving river bio ersity with climate change depends on linking management inside and outside protected areas. Projected increases in temperature and sea level may be used to prioritise conservation to counter likely major impacts in high-altitude zones and the coastal fringes, whereas elsewhere, considerable uncertainty remains in the absence of better downscaled projections of rainfall. Applying such spatial prioritisations using bio ersity surrogates could help river-focussed conservation around the world.
Publisher: Elsevier BV
Date: 02-2005
Publisher: Elsevier BV
Date: 04-2004
Publisher: Springer Science and Business Media LLC
Date: 10-2004
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 12-2005
DOI: 10.1161/01.STR.0000190838.02954.E8
Abstract: Background and Purpose— After a 1996 review from our group on risk factors for subarachnoid hemorrhage (SAH), much new information has become available. This article provides an updated overview of risk factors for SAH. Methods— An overview of all longitudinal and case-control studies of risk factors for SAH published in English from 1966 through March 2005. We calculated pooled relative risks (RRs) for longitudinal studies and odds ratios (ORs) for case-control studies, both with corresponding 95% CIs. Results— We included 14 longitudinal (5 new) and 23 (12 new) case-control studies. Overall, the studies included 3936 patients with SAH (892 cases in 14 longitudinal studies and 3044 cases in 23 case-control studies) for analysis. Statistically significant risk factors in longitudinal and case-control studies were current smoking (RR, 2.2 [1.3 to 3.6] OR, 3.1 [2.7 to 3.5]), hypertension (RR, 2.5 [2.0 to 3.1] OR, 2.6 [2.0 to 3.1]), and excessive alcohol intake (RR, 2.1 [1.5 to 2.8] OR, 1.5 [1.3 to 1.8]). Nonwhite ethnicity was a less robust risk factor (RR, 1.8 [0.8 to 4.2] OR, 3.4 [1.0 to 11.9]). Oral contraceptives did not affect the risk (RR, 5.4 [0.7 to 43.5] OR, 0.8 [0.5 to 1.3]). Risk reductions were found for hormone replacement therapy (RR, 0.6 [0.2 to 1.5] OR, 0.6 [0.4 to 0.8]), hypercholesterolemia (RR, 0.8 [0.6 to 1.2] OR, 0.6 [0.4 to 0.9]), and diabetes (RR, 0.3 [0 to 2.2] OR, 0.7 [0.5 to 0.8]). Data were inconsistent for lean body mass index (RR, 0.3 [0.2 to 0.4] OR, 1.4 [1.0 to 2.0]) and rigorous exercise (RR, 0.5 [0.3 to 1.0] OR, 1.2 [1.0 to 1.6]). In the studies included in the review, no other risk factors were available for the meta-analysis. Conclusions— Smoking, hypertension, and excessive alcohol remain the most important risk factors for SAH. The seemingly protective effects of white ethnicity compared to nonwhite ethnicity, hormone replacement therapy, hypercholesterolemia, and diabetes in the etiology of SAH are uncertain.
Publisher: Wiley
Date: 12-07-2021
DOI: 10.1111/REC.13470
Abstract: Habitat loss is a primary cause of population decline for 85% of species recognized as threatened by the International Union for Conservation of Nature. Ecological restoration can mitigate and reverse the effects of habitat loss on wildlife, but many restoration programs lack a systematic approach to monitoring outcomes, if indeed restoration sites are monitored at all. Here, we evaluate the response of wildlife to restoration plantings in an agricultural landscape in Tasmania, Australia, five years after their establishment. We surveyed three faunal groups—ground‐dwelling invertebrates, birds and terrestrial mammals—and compared community composition in plantings with those of nearby livestock pasture and remnant woodlands. Habitat type had some influence on invertebrate communities with more pollinators, but fewer nectivores (predominantly Lepidoptera) and engulf predators in riparian plantings than in paddocks. In comparison, nonriparian plantings had more nectivores and pollinators and a greater proportion of small‐bodied invertebrates than in paddocks. Invertebrate biomass was positively associated with the presence of large ground‐foraging birds. Habitat type had a significant effect on the composition of bird communities in nonriparian areas, with small native species more abundant in plantings than in paddocks. Endangered mammal species were recorded using planting sites, including eastern bettongs and spotted‐tailed quolls. We describe possible trajectories to inform adaptive management of local restoration efforts. Our study provides a rare ex le that considers the response of multiple faunal groups to restoration concurrently and highlights differences in wildlife communities between restoring and reference habitats that are likely to impact ecosystem services.
Publisher: CSIRO Publishing
Date: 2001
DOI: 10.1071/BT00095
Abstract: A floristic data set spanning 15 years was compiled from vegetation surveys of Sphagnum peatlands across Tasmania. The data were ordinated by hybrid multi-dimensional scaling and a three-dimensional solution was most satisfactory. The strongest floristic gradient corresponded to changes in altitude and moisture. Original data were included from Sphagnum peatlands outside their commonly recorded altitudinal, geologic and geographic ranges. Several new types of Sphagnum peatland are described. While many of Tasmania’s subalpine and alpine Sphagnum peatlands are protected within reserves, this is not the case for montane and lowland Sphagnum peatlands. During the past decade, the pressure on Sphagnum peatlands outside the Tasmanian reserve system has continued to increase. Threats such as Sphagnum-moss harvesting, peat mining, burning, grazing and forestry operations have an impact on both the number and condition of Sphagnum peatlands.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-2006
Publisher: No publisher found
Date: 2000
DOI: 10.1644/1545-1542%282000%29081%3C0434%3ANDASAD%3E2.0.CO%3B2
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-2006
DOI: 10.1161/01.STR.0000221212.36860.C9
Abstract: Background and Purpose— The relationship between baseline and recurrent vascular events may be important in the targeting of secondary prevention strategies. We examined the relationship between initial event and various types of further vascular outcomes and associated effects of blood pressure (BP)–lowering. Methods— Subsidiary analyses of the Perindopril Protection Against Recurrent Stroke Study (PROGRESS) trial, a randomized, placebo-controlled trial that established the benefits of BP–lowering in 6105 patients (mean age 64 years, 30% female) with cerebrovascular disease, randomly assigned to either active treatment (perindopril for all, plus indapamide in those with neither an indication for, nor a contraindication to, a diuretic) or placebo(s). Results— Stroke subtypes and coronary events were associated with 1.5- to 6.6-fold greater risk of recurrence of the same event (hazard ratios, 1.51 to 6.64 P =0.1 for large artery infarction, P .0001 for other events). However, 46% to 92% of further vascular outcomes were not of the same type. Active treatment produced comparable reductions in the risk of vascular outcomes among patients with a broad range of vascular events at entry (relative risk reduction, 25% P .0001 for ischemic stroke 42%, P =0.0006 for hemorrhagic stroke 17%, P =0.3 for coronary events P homogeneity=0.4). Conclusions— Patients with previous vascular events are at high risk of recurrences of the same event. However, because they are also at risk of other vascular outcomes, a broad range of secondary prevention strategies is necessary for their treatment. BP–lowering is likely to be one of the most effective and generalizable strategies across a variety of major vascular events including stroke and myocardial infarction.
Publisher: Elsevier BV
Date: 09-2003
Publisher: CSIRO Publishing
Date: 2016
DOI: 10.1071/WR15011
Abstract: Context Changes in abundance following fire are commonly reported for vertebrate species, but the mechanisms causing these changes are rarely tested. Currently, many species of small mammals are declining in the savannas of northern Australia. These declines have been linked to intense and frequent fires in the late dry season however, why such fires cause declines of small mammals is unknown. Aims We aimed to discover the mechanisms causing decline in abundance of two species of small mammals, the pale field rat, Rattus tunneyi, and the western chestnut mouse, Pseudomys nanus, in response to fire. Candidate mechanisms were (1) direct mortality because of fire itself, (2) mortality after fire because of removal of food by fire, (3) reduced reproductive success, (4) emigration, and (5) increased mortality because of predation following fire. Methods We used live trapping to monitor populations of these two species under the following three experimental fire treatments: high-intensity fire that removed all ground vegetation, low-intensity fire that produced a patchy burn, and an unburnt control. We also radio-tracked 38 R. tunneyi in iduals to discover the fates of in idual animals. Key results Abundance of both species declined after fire, and especially following the high-intensity burn. There was no support for any of the first four mechanisms of population decline, but mortality owing to predation increased after fire. This was related to loss of ground cover (which was greater in the high-intensity fire treatment), which evidently left animals exposed to predators. Also, local activity of two predators, feral cats and dingoes, increased after the burns, and we found direct evidence of predation by feral cats and snakes. Conclusions Fire in the northern savannas has little direct effect on populations of these small mammals, but it causes declines by lifying the impacts of predators. These effects are most severe for high-intensity burns that remove a high proportion of vegetation cover. Implications To prevent further declines in northern Australia, fire should be managed in ways that limit the effects of increased predation. This could be achieved by setting cool fires that produce patchy burns, avoiding hot fires, and minimising the total area burnt.
Publisher: Wiley
Date: 04-1995
DOI: 10.1111/J.1600-0447.1995.TB09778.X
Abstract: Evaluation of the relative efficacy of three screening instruments for depression and anxiety in a group of stroke patients was undertaken as part of the Perth community stroke study. Data are presented on the sensitivity and specificity of the Hospital Anxiety and Depression Scale (HAPS), the Geriatric Depression Scale and the General Health Questionnaire (GHQ) (28-item version) in screening patients 4 months after stroke for depressive and anxiety disorders diagnosed according to DSM-III criteria. The GHQ-28 and GDS but not the HADS depression, were shown to be satisfactory screening instruments for depression, with the GHQ-28 having an overall superiority. The performance of all 3 scales for screening post-stroke anxiety disorders was less satisfactory. The HADS anxiety had the best level of sensitivity, but the specificity and positive predictive values were low and the misclassification rate high.
Publisher: Informa UK Limited
Date: 2004
DOI: 10.1080/08037050410029605
Abstract: Analyses of the risks of stroke were conducted for subjects with and without diabetes, participating in a randomized, double-blind, placebo-controlled trial of a perindopril-based blood pressure lowering regimen in 6105 people with prior stroke or transient ischaemic attack (TIA), followed for a median of 3.9 years. Seven hundred and sixty-one patients had diabetes at baseline. Diabetes increased the risk of recurrent stroke by 35% (95% CI 10-65%) principally through an effect on ischaemic stroke (1.53, 95% CI 1.23-1.90). Active treatment reduced blood pressure by 9.5/4.6 mmHg in patients with diabetes and by 8.9/3.9 mmHg in patients without diabetes. The proportional risk reductions achieved for stroke in patients with diabetes, 38% (95% CI 8-58%), and patients without diabetes, 28% (95% CI 16-39%), were not significantly different (p homogeneity = 0.5). The absolute reduction in the risk of recurrent stroke in the patients with diabetes was equivalent to one stroke avoided among every 16 (95% CI 9-111) patients treated for 5 years. Diabetes is an important risk factor for stroke in patients with established cerebrovascular disease. Treatment with the ACE inhibitor perindopril with discretionary use of the diuretic indapamide produced reductions in the risk of recurrent stroke in patients with diabetes that were at least as great as those achieved in patients without diabetes.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 03-2004
DOI: 10.1161/01.STR.0000115751.45473.48
Abstract: Background and Purpose— This study was undertaken to better clarify the risks associated with cigarette smoking and subarachnoid hemorrhage (SAH). Methods— The study included 432 incident cases of SAH frequency matched to 473 community SAH-free controls to determine dose-dependent associations of active and passive smoking (at home) and smoking cessation with SAH. Results— Compared with never smokers not exposed to passive smoking, the adjusted odds ratio for SAH among current smokers was 5.0 (95% confidence interval [CI], 3.1 to 8.1) for past smokers, 1.2 (95% CI, 0.8 to 2.0) and for passive smokers, 0.9 (95% CI, 0.6 to 1.5). Current and lifetime exposures showed a clear dose-dependent effect, and risks appeared more prominent in women and for aneurysmal SAH. Approximately 1 in 3 cases of SAH could be attributed to current smoking, but risks decline quickly after smoking cessation, even among heavy smokers. Conclusions— A strong positive association was found between cigarette smoking and SAH, especially for aneurysmal SAH and women, which is virtually eliminated within a few years of smoking cessation. Large opportunities exist for preventing SAH through smoking avoidance and cessation programs.
Publisher: MDPI AG
Date: 20-10-2022
DOI: 10.3390/EN15207752
Abstract: Supercapacitors can store a million times more energy per unit mass or volume compared to electrolytic capacitors. Due to their low internal resistance, they are capable of driving or absorbing pulsative high currents. Over the last quarter, century supercapacitor (SC) manufacturers have developed several families of mass-scale devices with high-power density and a longer cycle life that helped the end-users to improve their energy storage systems and products. Today, there are three common device families, namely, (i) symmetrical double-layer capacitors (EDLCs), (ii) hybrid capacitors with a lithium electrode, and (iii) battery capacitors based on pseudo capacitance concepts. This review paper compares these families and provides an overview of several state-of-the-art applications in electric vehicles (EVs), microgrids, and consumer electronics.
Publisher: Springer Science and Business Media LLC
Date: 09-10-2009
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 05-2003
Publisher: Wiley
Date: 22-07-2014
DOI: 10.1111/FWB.12407
Publisher: The Royal Society
Date: 27-04-2016
Abstract: Plant litter breakdown is a key ecological process in terrestrial and freshwater ecosystems. Streams and rivers, in particular, contribute substantially to global carbon fluxes. However, there is little information available on the relative roles of different drivers of plant litter breakdown in fresh waters, particularly at large scales. We present a global-scale study of litter breakdown in streams to compare the roles of biotic, climatic and other environmental factors on breakdown rates. We conducted an experiment in 24 streams encompassing latitudes from 47.8° N to 42.8° S, using litter mixtures of local species differing in quality and phylogenetic ersity (PD), and alder ( Alnus glutinosa ) to control for variation in litter traits. Our models revealed that breakdown of alder was driven by climate, with some influence of pH, whereas variation in breakdown of litter mixtures was explained mainly by litter quality and PD. Effects of litter quality and PD and stream pH were more positive at higher temperatures, indicating that different mechanisms may operate at different latitudes. These results reflect global variability caused by multiple factors, but unexplained variance points to the need for expanded global-scale comparisons.
Publisher: BMJ
Date: 08-1994
Abstract: In a population based register of stroke (n = 536) compiled in Perth, Western Australia during an 18 month period in 1989-90, 60 cases (11%) of primary intracerebral haemorrhage were identified among 56 persons (52% men). The mean age of these patients was 68 (range 23-93) and 46 (77%) events were first ever strokes. The crude annual incidence was 35 per 100,000, with a peak in the eighth decade, and a male predominance. Deep and lobar haemorrhages each accounted for almost one third of all cases. The clinical presentations included sudden coma (12%), headache (8%), seizures (8%), and pure sensory-motor stroke (3%). Primary intracerebral haemorrhage was the first presentation of leukaemia in two cases (both fatal) and it followed an alcoholic binge in four cases. 55% had a history of hypertension. 16 (27%) patients, half of whom had a history of hypertension, were taking antiplatelet agents, and one patient was taking warfarin. There were only two confirmed cases of amyloid angiopathy. The overall 28 day case fatality was 35%, but this varied from 100% for haemorrhages in the brainstem to 22% for those in the basal ganglionic or thalamic region. Other predictors of early death were intraventricular extension of blood, volume of haematoma, mass effect, and coma and severe paresis at onset. Although based on small numbers, these data confirm the heterogeneous nature of primary intracerebral haemorrhage, but they also suggest a different clinical spectrum of this type of stroke in the community compared with the experience of specialist neurological units.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-2006
Publisher: Elsevier BV
Date: 12-2007
DOI: 10.1111/J.1753-6405.2007.00136.X
Abstract: To estimate the incidence, prevalence and mortality of stroke in New Zealand (NZ) in 2001, projected to 2011. Multistate lifetable models were constructed using smoothed rates of first-ever stroke incidence and relative risks of mortality estimated from the most recent Auckland Regional Community Stroke (ARCOS) Study. Estimates of the burden of stroke in NZ were calculated by applying rates output by the model to the 2001 population. Stroke incidence, prevalence and mortality were then projected to 2011, assuming similar trends in stroke incidence and case fatality to those estimated between the 1991/92 and 2002/03 studies. A total of 5,200 first-ever strokes were estimated to have occurred in NZ in 2001. Rates of stroke rose exponentially with increasing age and were 20% higher among males than females at most ages. Nevertheless, the lifetable risk of stroke was lower for males (16%) than females (18%). On average, males survived a year longer than females after a first-ever stroke (9.0 vs. 8.2 years). The incidence rates of first-ever stroke declined by approximately 1% per year between 1991 and 2003. The lifetable risk of stroke remained stable for females but increased for males (from 14% to 16%) over this period. Stroke prevalence also increased by approximately 1% per year, whereas stroke-related mortality fell by 4% per year. If these trends continue, approximately 6,000 first-ever strokes (2% annual increase), 45,000 stroke survivors (2% annual increase) and 2,000 stroke-related deaths (1% annual decline) are expected in 2011. Stroke mortality is falling faster than stroke incidence. This, together with population growth and ageing, will lead to a rising burden of stroke-related disability over the next decade.
Publisher: Public Library of Science (PLoS)
Date: 11-11-2015
Publisher: Informa UK Limited
Date: 03-04-2022
Publisher: Informa UK Limited
Date: 2005
Publisher: CSIRO Publishing
Date: 1995
DOI: 10.1071/MF9950501
Abstract: The influence of s le quantification and taxonomic resolution on the ordination of macroinvertebrate communities from nine Victorian rivers was examined by progressively reducing the degree of detail in the original data (species level, quantitative). Five additional data sets were created that consisted of binary (presence or absence) data on species, quantitative or binary data on families, and quantitative data on PET (plecopteran, ephemeropteran and trichopteran) species or families. Ordinations were performed with detrended correspondence analysis (DCA) and semi-strong hybrid multi-dimensional scaling (SSH). With both ordination techniques, the ordinations of each data set (including the original) revealed the same three underlying gradients. An altitudinal gradient consistently achieved the highest correlations with the ordinations (r = 0.71-0.93), followed by a substratum gradient (r = 0.50-0.88) and a combined pH and conductivity gradient (r = 0.47-0.76). Each of the five less-complete data sets thus provides an adequate degree of detail for ordination analysis and subsequent interpretation of environmental gradients.
Publisher: Wiley
Date: 15-08-2003
DOI: 10.1046/J.1532-5415.2003.51405.X
Abstract: identify, appraise, and synthesize data from randomized, controlled trials of vitamin D supplementation in older people. A systematic review of trials identified from searches of databases, reference lists, review articles, and recent conference proceedings. Most studies performed in ambulatory setting. Older people (mean age=60). Vitamin D or vitamin D metabolites. Strength, physical performance, or falls. Thirteen trials involving 2,496 patients met this study's inclusion criteria. Most of the trials were small and had methodological problems. In 10 trials, there was no evidence that vitamin D or vitamin D metabolites had an effect on falls or physical function, but three trials showed a positive effect of vitamin D in combination with calcium. When available data from the four highest quality trials were pooled (n=1,317), there continued to be no evidence that vitamin D reduced the risk of falling (relative risk= 0.99, 95% confidence interval=0.89-1.11), although a single trial of vitamin D and calcium showed a positive effect. Although there is insufficient evidence that vitamin D supplementation alone improves physical performance in older people, some data suggest a benefit from vitamin D combined with calcium supplementation, but this requires confirmation in large, well-designed trials.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 26-03-2021
Abstract: Plant litter functional ersity effects on instream decomposition change across latitudes.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 04-2005
DOI: 10.1161/01.STR.0000158906.79898.3A
Abstract: Background and Purpose— In families with ≥2 relatives with intracranial aneurysms (IAs), screening for IAs in asymptomatic first-degree relatives is often recommended. We assessed the long-term psychosocial impact of such screening. Methods— We identified all persons with IA (screen-positives) and matched them for age and sex with 2 controls without IA (screen-negatives) from hospital-based registers of familial IA. Persons underwent telephone interviews using questionnaires that covered the areas of psychosocial impact of screening, health-related quality of life (HRQoL), and mood. Data were compared between screen-positives and screen-negatives, and with reference populations. Results— Overall, 105 persons from 33 families with IA were included, of whom 35 were screen-positive and 70 were screen-negative. Of the screen-positives, 12 (44%) had reduced their work and 23 (66%) had experienced changes in ≥1 area of independence, self-esteem, future outlook, or personal relationships. In contrast, only 1 (2%) screen-negative person had stopped working and 12 (17%) others had experienced changes in their self-esteem, future outlook, or relationships. Screen-positives had lower HRQoL compared with screen-negatives and the reference population, whereas both screen groups had higher mean depression scores than the reference population. Despite these effects, only 3 persons regretted participating in screening. Conclusion— Although screening for IA is an important preventative strategy in high-risk in iduals, it is associated with considerable psychosocial effects, both positive and negative. Greater awareness of such outcomes, and appropriate intervention where necessary, would appear to be a necessary component of IA screening programs.
Publisher: Wiley
Date: 22-11-2007
Publisher: CSIRO Publishing
Date: 1994
DOI: 10.1071/MF9940945
Abstract: Data on undisturbed lotic macroinvertebrate communities were assembled from a number of studies carried out in Victoria over the past 15 years species-level information for 40 sites on nine rivers was available. Ordination (DECORANA and semi-strong hybrid multidimensional scaling) and classification (flexible UPGMA and TWINSPAN) techniques were used to assess the similarity of community composition among the sites. Correlation of environmental variables with both ordinations indicated that factors related to altitude and substratum were the most obvious gradients a conductivity gradient was also present. The classification analyses identified four groups of sites that matched the altitudinal trends evident in the ordinations but these techniques did not emphasize the substratum gradient. TWINSPAN also identified six groups of taxa that were characteristic of particular altitudes or regions or were widespread across all sites. The distinctiveness of the patterns from this preliminary study indicates that it would be worthwhile extending these analyses to much larger data sets from Victorian rivers.
Publisher: Elsevier BV
Date: 09-2002
Abstract: Current treatment of acute stroke remains unsatisfactory. This review presents experimental and clinical data which suggest that mild induced hypothermia could be a potent and practicable neuroprotective treatment of acute ischaemic stroke and intracerebral haemorrhage. Hypothermia, if proven to be safe, effective and widely practicable in patients with acute stroke, could have an enormous positive impact on reducing the burden of stroke worldwide. Critical issues that will need to be considered in a well designed randomised controlled trial of induced hypothermia in acute stroke patients are discussed.
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/MF06240
Abstract: The habitat used by animals plays an important role in their interactions with predators and prey. By using complex habitats such as areas of dense macrophyte cover in response to elevated predation risk, small fishes may reduce their foraging success. Because the threat of predation by introduced brown trout increases the use of complex habitats by the threatened Galaxias auratus (Johnston), we experimentally examined its foraging in different habitats to estimate indirect impacts of brown trout presence. The lakes in which G. auratus lives have recently become more turbid, so the experiment was also conducted under different turbidity levels. Laboratory feeding trials in which planktonic and epibenthic prey were simultaneously offered to G. auratus in the presence or absence of artificial macrophytes and at three turbidity levels (0, 50 and 100 NTU) revealed that its overall foraging success was unaffected by habitat complexity however, in trials with artificial macrophytes, G. auratus consumed a greater proportion of planktonic prey than in the absence of artificial macrophytes. Neither overall foraging success nor prey selection by G. auratus was affected by high turbidity, indicating that water clarity does not appear to directly negatively impact its feeding. The switch in prey types would probably not be detrimental to G. auratus in the long term, and thus it appears that there is no substantial feeding cost associated with its increased use of complex habitats. It could, however, affect lower trophic levels in the lakes to which it is endemic.
Publisher: Authorea, Inc.
Date: 04-07-2023
DOI: 10.22541/AU.168845417.78133700/V1
Abstract: Aim Identification of taxonomically cryptic species is essential for the effective conservation of bio ersity. Freshwater-limited organisms tend to be genetically isolated by drainage boundaries, and thus may be expected to show substantial cryptic phylogenetic and taxonomic ersity. By comparison, populations of diadromous taxa, that migrate between freshwater and marine environments, are expected to show less genetic differentiation. Here we test for cryptic ersity in Australasian populations (both diadromous and non-diadromous) of two widespread Southern Hemisphere fish species. Location Throughout both their Australian ranges (including Lord Howe Island) and localities in New Zealand (including the Subantarctic Islands and Chatham Island). Taxon Galaxias brevipinnis and Galaxias maculatus. Methods mtDNA and nuclear markers were used to assess the presence of cryptic species and to determine if differences in species ecology could influence the degree of cryptic ersity. Results Both mtDNA and nuclear markers reveal putative cryptic species within these taxa. The substantial ersity detected within G. brevipinnis may be explained by its strong climbing ability which allows it to form isolated inland populations. In island populations, G. brevipinnis similarly show deeper genetic ergence than those of G. maculatus, which may be explained by the greater abundance of G. maculatus larvae in the sea allowing more ongoing dispersal. Main conclusions Our study highlights that even widespread, ‘high-dispersal’ species can harbour substantial cryptic ersity and therefore warrant increased taxonomic and conservation attention.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-2005
DOI: 10.1161/01.STR.0000165928.19135.35
Abstract: Background and Purpose— Although depression is an important sequelae of stroke, there is uncertainty regarding its frequency and outcome. Methods— We undertook a systematic review of all published nonexperimental studies (to June 2004) with prospective consecutive patient recruitment and quantification of depressive symptoms/illness after stroke. Results— Data were available from 51 studies (reported in 96 publications) conducted between 1977 and 2002. Although frequencies varied considerably across studies, the pooled estimate was 33% (95% confidence interval, 29% to 36%) of all stroke survivors experiencing depression. Differences in case mix and method of mood assessment could explain some of the variation in estimates across studies. The data also suggest that depression resolves spontaneously within several months of onset in the majority of stroke survivors, with few receiving any specific antidepressant therapy or active management. Conclusions— Depression is common among stroke patients, with the risks of occurrence being similar for the early, medium, and late stages of stroke recovery. There is a pressing need for further research to improve clinical practice in this area of stroke care.
Publisher: IEEE
Date: 08-2019
Publisher: Wiley
Date: 12-1999
Publisher: BMJ
Date: 10-2002
Publisher: Michigan State University Press
Date: 2003
Abstract: In Australia, riverine bio ersity (as judged by species ersity) is threatened by an array of anthropogenic effects common in industrialised countries (e.g. in-stream barriers, mining and sewage effluents, increased nutrient inputs, introduced species) as well as more diffuse, widespread phenomena characteristic of most of the arid and semi-arid areas of the world (e.g. salinisation and alteration of flows). Although much has been learned from specific case studies in the more populated areas, the nationally systematic efforts at quantifying these threats rely mostly on measures of river “condition” or “health” because measuring species ersity across areas as large as Australia is too expensive. However, these measures are incomplete representations of bio ersity, and some of the auditing processes compound other human values into their summaries of river condition or health. Furthermore, public perceptions of what rivers in Australia can deliver in terms of “ecosystem services” may not be feasible in many areas owing to the way that the Australian landscape has evolved. To avoid making the mistake of assuming that “good river health” automatically means “all bio ersity is conserved,” three advances are needed: appropriate conceptual frameworks of how a given river system functions, more research that clarifies the links between processes and bio ersity, and an understanding of the historical biogeography of the river biota so that we can provide a clear context for the first two items. Substantial progress has been made in developing and adapting conceptual models of river systems, research into processes is being initiated even in some remote, sparsely populated catchments, and much has been learned about the history and distribution of the flora and fauna. Key challenges remain in consolidating reliable empirical relationships between bio ersity and the surrogate variables used to measure it, estimating the rates of bio ersity change likely to accrue from climate change over the next millennium, and identifying bio ersity “hot spots” particularly for less than charismatic species.
Publisher: Springer Science and Business Media LLC
Date: 03-2005
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 2006
DOI: 10.1161/01.STR.0000195131.23077.85
Abstract: Background and Purpose— Although geographical variations in stroke rates are well documented, limited data exist on temporal trends in ethnic-specific stroke incidence. Methods— We assessed trends in ethnic-specific stroke rates using standard diagnostic criteria and community-wide surveillance procedures in Auckland, New Zealand (NZ) in 1981 to 1982, 1991 to 1992, and 2002 to 2003. Indirect and direct methods were used to adjust first-ever (incident) and total (attack) rates for changes in the structure of the population and reported with 95% CIs. Ethnicity was self-defined and categorized as “NZ/European,” “Maori,” “Pacific peoples,” and “Asian and other.” Results— Stroke attack (19% 95% CI, 11% to 26%) and incidence rates (19% 95% CI, 12% to 24%) declined significantly in NZ/Europeans from 1981 to 1982 to 2002 to 2003. These rates remained high or increased in other ethnic groups, particularly for Pacific peoples in whom stroke attack rates increased by 66% (95% CI 11% to 225%) over the periods. Some favorable downward trends in vascular risk factors, such as cigarette smoking, were counterbalanced by increasing age, body mass index, and diabetes in certain ethnic groups. Conclusions— Divergent trends in ethnic-specific stroke incidence and attack rates, and of associated risk factors, have occurred in Auckland over recent decades. The findings provide mixed views as to the future burden of stroke in populations undergoing similar lifestyle and structural changes.
Publisher: Springer Netherlands
Date: 1986
Publisher: Wiley
Date: 09-1999
Publisher: Springer Science and Business Media LLC
Date: 14-09-2017
DOI: 10.1038/S41598-017-11454-Z
Abstract: Many carnivores are threatened by habitat loss and fragmentation. These changes create linear features and habitat edges that can facilitate foraging and/or travel. To understand the significance of anthropogenic linear features in the ecology of carnivores, fine-scaled studies are needed. We studied two medium-sized carnivores: the endangered Tasmanian devil ( Sarcophilus harrisii ) and the near threatened spotted-tailed quoll ( Dasyurus maculatus ), in a mixed landscape of conservation and agricultural land. Using GPS tracking, we investigated their use of intact habitat versus linear features such as roads, fences and the pasture/cover interface. Both species showed a positive selection for anthropogenic linear features, using the pasture/cover interface for foraging and roads for movement and foraging. Devils travelled along fence lines, while quolls showed little preference for them. Otherwise, both species foraged in forest and travelled through pasture. While devils and quolls can utilise anthropogenic linear features, we suggest that their continued survival in these habitats may depend on the intensity of other threats, e.g. persecution, and providing that sufficient intact habitat remains to sustain their ecological needs. We suggest that the management of both species and probably many other species of carnivores should focus on controlling mortality factors associated with human use of landscapes.
Publisher: Springer Science and Business Media LLC
Date: 15-05-2007
Publisher: Elsevier BV
Date: 09-2001
Publisher: University of Chicago Press
Date: 06-2012
DOI: 10.1899/11-103.1
Publisher: Elsevier BV
Date: 09-2021
Publisher: Springer Science and Business Media LLC
Date: 09-2006
Publisher: IEEE
Date: 07-2020
Publisher: Wiley
Date: 28-06-2016
DOI: 10.1111/ACV.12294
Publisher: Society for the Study of Amphibians and Reptiles
Date: 09-2005
DOI: 10.1670/52-04A.1
Publisher: S. Karger AG
Date: 1996
DOI: 10.1159/000108023
Publisher: Wiley
Date: 04-1989
Publisher: Wiley
Date: 04-2007
Publisher: Public Library of Science (PLoS)
Date: 27-11-2017
Publisher: Oxford University Press
Date: 20-12-2018
DOI: 10.1093/OSO/9780198766384.003.0003
Abstract: Ecological questions are better addressed by framing multiple working hypotheses and designing s ling to assess their relative merits, often using multiple lines of evidence. Most applications in conservation are likely to differ from ‘pure’ ecology by preferring predictive rather than explanatory approaches. Often the complexity of freshwater ecosystems dictate combining both model- and design-based s ling strategies. Recent developments provide several options to improve ‘standard’ designs. Increasingly accessible geospatial databases have facilitated habitat-based strategies which can improve s ling efficiencies for both standing water bodies and dendritic networks of river systems. Modern organism-centric strategies strongly emphasise estimating detectability of the target species. This helps refine estimates for capture-mark-recapture (CMR) methods and s ling strategies for rare taxa. It also provides the basis for occupancy modelling, which is becoming increasingly popular for broad-scale issues. New technologies in remote sensing, videography, camera trapping, and eDNA will likely further accelerate specialised, more cost-effective s ling strategies.
Publisher: Wiley
Date: 04-1989
Publisher: University of Chicago Press
Date: 09-2001
DOI: 10.2307/1468045
Publisher: Wiley
Date: 08-2023
DOI: 10.1002/ECE3.10409
Abstract: The ersity‐functioning relationship is a pillar of ecology. Two significant concepts have emerged from this relationship: redundancy, the asymptotic relationship between ersity and functioning, and multifunctionality, a monotonic relationship between ersity and multiple functions occurring simultaneously. However, multifunctional redundancy, an asymptotic relationship between ersity and multiple functions occurring simultaneously, is rarely detected in research. Here we assess whether this lack of detection is due to its true rarity, or due to systematic research error. We discuss how inconsistencies in the use of terms such as ‘function’ lead to mismatched research. We consider the different techniques used to calculate multifunctionality and point out a rarely considered issue: how determining a function's maximum rate affects multifunctionality metrics. Lastly, we critique how a lack of consideration of multitrophic, spatiotemporal, interactions and community assembly processes in designed experiments significantly reduces the likelihood of detecting multifunctional redundancy. Multifunctionality research up to this stage has made significant contributions to our understanding of the ersity‐functioning relationship, and we believe that multifunctional redundancy is detectable with the use of appropriate methodologies.
Publisher: Informa UK Limited
Date: 02-04-2020
Publisher: Informa UK Limited
Date: 09-2006
Publisher: Springer Science and Business Media LLC
Date: 17-06-2021
DOI: 10.1038/S41467-021-23930-2
Abstract: The relationship between detritivore ersity and decomposition can provide information on how biogeochemical cycles are affected by ongoing rates of extinction, but such evidence has come mostly from local studies and microcosm experiments. We conducted a globally distributed experiment (38 streams across 23 countries in 6 continents) using standardised methods to test the hypothesis that detritivore ersity enhances litter decomposition in streams, to establish the role of other characteristics of detritivore assemblages (abundance, biomass and body size), and to determine how patterns vary across realms, biomes and climates. We observed a positive relationship between ersity and decomposition, strongest in tropical areas, and a key role of abundance and biomass at higher latitudes. Our results suggest that litter decomposition might be altered by detritivore extinctions, particularly in tropical areas, where detritivore ersity is already relatively low and some environmental stressors particularly prevalent.
Publisher: University of Chicago Press
Date: 12-2016
DOI: 10.1086/688872
Publisher: Springer Science and Business Media LLC
Date: 19-10-2013
Publisher: Informa UK Limited
Date: 07-2002
Publisher: BMJ
Date: 02-08-2006
Publisher: Public Library of Science (PLoS)
Date: 10-11-2015
Publisher: CSIRO Publishing
Date: 2023
DOI: 10.1071/WR22154
Publisher: Wiley
Date: 12-1999
Publisher: S. Karger AG
Date: 2005
DOI: 10.1159/000083253
Abstract: i Background: /i Few studies provide information on trends in the long-term outcome of stroke. Weaimed to determine trends in survival and recurrent stroke, over 5 years after first-ever stroke, for 2 cohorts of patients enrolled in the Perth Community Stroke Study in 1989–90 and 1995–96. i Methods: /i For 12-month periods beginning February 1989 and February 1995, all in iduals with an acute stroke who were resident in a geographically-defined and representative region of Perth, Western Australia, were registered and followed-up prospectively 5 years after the index event. i Results: /i The 5-year cumulative risk of death was 59% (95% confidence interval (CI) 53%, 65%) and 58% (95% CI 52%, 65%) for the 1989–90 and 1995–96 cohorts, respectively (p = 0.94). The 5-year cumulative risk of first recurrent stroke was 32% (95% CI 25%, 40%) and 23% (95% CI 16%, 30%) for the 1989–90 and 1995–96 cohorts, respectively (p = 0.07). i Conclusions: /i Although no statistically significant improvement occurred in 5-year survival after first-ever stroke in Perth between 1989–90 and 1995–96, there was a statistically nonsignificant trend towards a smaller cumulative risk of recurrent stroke over 5 years after a first-ever stroke. Serial community-based studies of the incidence and outcome of stroke are an important means of monitoring the translation of proven preventive interventions to improvements in population health.
Publisher: Wiley
Date: 05-1998
Publisher: S. Karger AG
Date: 2002
DOI: 10.1159/000057846
Abstract: As medicine moves into the 21st century, with added pressures of increasing costs and limited resources, successful reduction of the impact of stroke on the population will require shifting our emphasis away from treating end stages of generalized atherosclerosis and other underlying diseases to prevention of these diseases. However, before any potential interventions can be promoted with confidence, more needs to be known about the specific causes of stroke subtypes in various populations, especially potentially modifiable risk factors. In this selective review, we appraise current evidence on some markers of systemic inflammation (C-reactive protein), endothelial dysfunction (homocysteine, von Willebrand factor), dietary fatty acids and micronutrients as risk factors for stroke. Although a great deal of research into the role of these risk factors in cardiovascular diseases has been undertaken, little reliable information is available on their role in stroke, especially in the elderly. Evaluation of plasma fatty acids and specific antioxidants and micronutrients as well as markers of systemic inflammation, endothelial dysfunction (including C-reactive protein, homocysteine levels, von Willebrand factor, and paraoxonase activity) may prove to be valuable in the future determination of the risk of stroke.
Publisher: Wiley
Date: 27-09-2019
DOI: 10.1111/ECOG.04485
Publisher: Wiley
Date: 12-2021
DOI: 10.1111/EMR.12504
Abstract: Temperate woodlands are amongst the most threatened ecosystems in Australia because the land on which they occur is highly suited to agriculture. Two hundred years of habitat loss and fragmentation in the Midlands agricultural region in Tasmania have led to widespread declines in native vertebrates and landscapes with populations of predators including feral Cat ( Felis catus ) and the native‐invasive Noisy Miner ( Manorina melanocephala ). Ecologists at the University of Tasmania co‐designed mechanistic animal‐centric research on mammals and birds in the Midlands to inform vegetation restoration carried out by Greening Australia that would support the recovery of wildlife species. We used species‐appropriate technologies to assess the decisions made by in idual animals to find food and shelter and to disperse across this fragmented landscape, and linked these, together with patterns of occupancy, across multiple spatial and temporal scales. We focussed on a native (Spotted‐tailed Quoll, Dasyurus maculatus ) and an invasive (feral Cat, Felis catus ) carnivore, a woodland‐specialist herbivore (Eastern Bettong, Bettongia gaimardi ) and woodland birds including the native‐invasive Noisy Miner. Our results, which show intense predatory and competitive pressure of cats and populations of Noisy Miner on native fauna, highlight how grounding restoration in the context of ecological interactions is essential to success in managing the impacts of invasive species in restored landscapes. Successful restoration will require innovative approaches in plantings and field experimentation with artificial refuges, to reduce habitat suitability for the Noisy Miner and cats and provide refuges for native mammals and birds to live in the landscape where cats also occur. Our results emphasise the significance of structural complexity of restoration plantings for supporting the recolonisation and persistence of native fauna. At large landscape‐scale, we demonstrate the importance of retaining small habitat elements, including ancient paddock trees, pivot irrigation corners and small, degraded remnants, in facilitating occupancy and dispersal and, therefore, persistence of wild animals across this agricultural region.
Publisher: Wiley
Date: 16-03-2010
Publisher: University of Chicago Press
Date: 09-2007
DOI: 10.1899/06-067.1
Publisher: The Royal Society
Date: 07-09-2015
Abstract: Tasmanian devil facial tumour disease (DFTD) is a clonally transmissible cancer threatening the Tasmanian devil ( Sarcophilus harrisii ) with extinction. Live cancer cells are the infectious agent, transmitted to new hosts when in iduals bite each other. Over the 18 years since DFTD was first observed, distinct genetic and karyotypic sublineages have evolved. In this longitudinal study, we investigate the associations between tumour karyotype, epidemic patterns and host demographic response to the disease. Reduced host population effects and low DFTD infection rates were associated with high prevalence of tetraploid tumours. Subsequent replacement by a diploid variant of DFTD coincided with a rapid increase in disease prevalence, population decline and reduced mean age of the population. Our results suggest a role for tumour genetics in DFTD transmission dynamics and epidemic outcome. Future research, for this and other highly pathogenic emerging infectious diseases, should focus on understanding the evolution of host and pathogen genotypes, their effects on susceptibility and tolerance to infection, and their implications for designing novel genetic management strategies. This study provides evidence for a rapid localized lineage replacement occurring within a transmissible cancer epidemic and highlights the possibility that distinct DFTD genetic lineages may harbour traits that influence pathogen fitness.
Publisher: Springer Science and Business Media LLC
Date: 05-2006
Publisher: Springer Science and Business Media LLC
Date: 25-08-2006
DOI: 10.1007/S00442-006-0505-1
Abstract: A considerable amount of research has investigated the influence of habitat structure on predator success, yet few studies have explored the implications for community structure and food-web dynamics. The relative importance of macrophyte structure and fish predation on the composition of the macroinvertebrate and periphyton communities in a lowland river was investigated using a multifactorial caging experiment. We hypothesised that: (1) fish predators are less effective in a more structurally complex macrophyte analogue (2) strong direct and indirect effects of fish predators (e.g. trophic cascades) are less likely to occur in a structurally complex habitat and (3) the strength of these patterns is influenced by the composition of the prevailing community assemblage. We measured the abundance and composition of the macroinvertebrate and periphyton communities associated with three different-shaped macrophyte analogues, under different fish predator treatments and at different times. Macrophyte analogue architecture had strong, consistent effects on both the macroinvertebrate and periphyton communities both were most abundant and erse on the most structurally complex plant analogue. In contrast, the fish predators affected only a subset of the macroinvertebrate community and there was a suggestion of minor indirect effects on periphyton community composition. Contrary to expectations, the fish predators had their strongest effects in the most structurally complex macrophyte analogue. We conclude that in this system, macrophyte shape strongly regulates the associated freshwater assemblage, resulting in a erse community structure less likely to exhibit strong effects of fish predation.
Publisher: Elsevier BV
Date: 06-2005
DOI: 10.1016/J.JOCN.2004.09.009
Abstract: Evidence exists for an association between migraine and ischaemic stroke, but there is uncertainty about whether migraine is a risk factor for subarachnoid haemorrhage (SAH). A multi-centre, population-based, case-control study using cases of first-ever SAH during 1995-98 and matched controls in four study centres in Australia and New Zealand. Self- or proxy-reported history, frequency and characteristics of headaches, classified according to 1988 International Headache Society diagnostic criteria. 206 of 432 (48%) cases and 236 of 473 (50%) controls had a history of headaches. The frequency and characteristics of headaches were similar between the two groups. No association was found in logistic regression analyses for history or frequency of headaches, or migraine headaches. No evidence was found for an association between recurrent headaches and SAH. Such information is important for counselling patients and families about the significance of past and ongoing headaches in relation to this illness.
Publisher: Wiley
Date: 2006
DOI: 10.1002/AQC.722
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 08-2003
DOI: 10.1161/01.STR.0000082382.42061.EE
Abstract: Background and Purpose— Very few studies have provided information regarding long-term prognosis after stroke. We aimed to determine the absolute and relative survival over 10 years among patients with first-ever stroke from a population-based study in Perth, Western Australia. Methods— For a 12-month period beginning February 1989, all in iduals with a suspected acute stroke or transient ischemic attack who were resident in a geographically defined and representative region of Perth, Western Australia, were registered prospectively and assessed according to standardized diagnostic criteria. Patients with a definite first-ever stroke were followed up prospectively at 4 months, 12 months, 5 years, and 10 years after the index event. Results— A total of 251 patients with first-ever stroke were registered, and 244 (97%) were followed up at 10 years, by which time 197 (79% 95% confidence interval [CI], 74 to 84) had died. The major causes of death were the direct effects of the initial stroke (27% 95% CI, 21 to 33) and cardiovascular disease (26% 95% CI, 20 to 32). Among 1-year survivors of stroke, the average annual case fatality was 4.8%, which was 2.3 (95% CI, 1.9 to 2.7) times greater than for the general population of the same age and sex. Conclusions— One in 5 patients with first-ever stroke survived to 10 years. The average annual case fatality was 4.8% between years 1 and 10 after stroke, which was twice that expected for the general population. Vascular disease is the major cause of death among long-term survivors of stroke.
Publisher: MDPI AG
Date: 05-2022
DOI: 10.3390/APP12094594
Abstract: With the introduction of switch-mode power supplies (SMPS) in the mid-1970s, the efficiency of DC–DC conversion rose from 60 to 80% and SMPS became a popular power supply solution. However, linear regulators have not become obsolete. The modern power management system in portable devices supports a complex mix of DC–DC converters, combining switch-mode power supplies (SMPS), switched capacitor converters (SCCs), and linear regulators in the form of low-dropout regulators (LDOs). LDOs are used to supply low-voltage DC power rails with very low noise and high current slew rate capability, which are usually fed by the output rail of SMPS. This paper provides a comprehensive review of the evolution of the application scope of linear-type DC–DC converters in the power supply context and the present research trends. First, we review the context of linear DC–DC converters in detail, particularly in portable device power supplies. Then, the details of LDO regulators and their recent industry development and research trends are discussed. Then, the discussion focuses on supercapacitor-assisted low-dropout (SCALDO) regulator design and its scope in the portable device power management together with SCALDO-based dual output and reduced switch designs, and finally, the conclusions follow.
Publisher: Elsevier BV
Date: 02-2007
Publisher: The Royal Society
Date: 28-11-2018
Abstract: Top carnivores have suffered widespread global declines, with well-documented effects on mesopredators and herbivores. We know less about how carnivores affect ecosystems through scavenging. Tasmania's top carnivore, the Tasmanian devil (Sarcophilus harrisii) , has suffered severe disease-induced population declines, providing a natural experiment on the role of scavenging in structuring communities. Using remote cameras and experimentally placed carcasses, we show that mesopredators consume more carrion in areas where devils have declined. Carcass consumption by the two native mesopredators was best predicted by competition for carrion, whereas consumption by the invasive mesopredator, the feral cat ( Felis catus ), was better predicted by the landscape-level abundance of devils, suggesting a relaxed landscape of fear where devils are suppressed. Reduced discovery of carcasses by devils was balanced by the increased discovery by mesopredators. Nonetheless, carcasses persisted approximately 2.6-fold longer where devils have declined, highlighting their importance for rapid carrion removal. The major beneficiary of increased carrion availability was the forest raven ( Corvus tasmanicus ). Population trends of ravens increased 2.2-fold from 1998 to 2017, the period of devil decline, but this increase occurred Tasmania-wide, making the cause unclear. This case study provides a little-studied potential mechanism for mesopredator release, with broad relevance to the vast areas of the world that have suffered carnivore declines.
Publisher: Wiley
Date: 29-12-2015
DOI: 10.1002/ECE3.1825
Publisher: American Medical Association (AMA)
Date: 12-05-2003
Publisher: Oxford University Press (OUP)
Date: 05-2000
Publisher: Oxford University Press (OUP)
Date: 11-2000
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 10-2005
DOI: 10.1161/01.STR.0000181115.59173.42
Abstract: Background and Purpose— Patients with atrial fibrillation have a high risk of stroke and other vascular events even if anticoagulated. The primary objective here is to determine whether routine blood pressure–lowering provides additional protection for this high-risk patient group. Methods— This study was a subsidiary analysis of the Perindopril Protection Against Recurrent Stroke Study (PROGRESS)—a randomized, placebo-controlled trial that established the beneficial effects of blood pressure–lowering in a heterogeneous group of patients with cerebrovascular disease. A total of 6105 patients were randomly assigned to either active treatment (2 to 4 mg perindopril for all participants plus 2.0 to 2.5 mg indapamide for those without an indication for or a contraindication to a diuretic) or matching placebo(s). Outcomes are total major vascular events, cause-specific vascular outcomes, and death from any cause. Results— There were 476 patients with atrial fibrillation at baseline, of whom 51% were taking anticoagulants. In these patients, active treatment lowered mean blood pressure by 7.3/3.4 mm Hg and was associated with a 38% (95% confidence interval [CI], 6 to 59) reduction in major vascular events and 34% (95% CI, −13 to 61) reduction in stroke. The benefits of blood pressure–lowering in patients with atrial fibrillation were achieved irrespective of the use of anticoagulant therapy ( P homogeneity=0.8) or the presence of hypertension ( P homogeneity=0.4). Conclusions— For most patients with atrial fibrillation, routine blood pressure–lowering is likely to provide protection against major vascular events additional to that conferred by anticoagulation.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 10-2005
DOI: 10.1161/01.STR.0000181079.42690.BF
Abstract: Background and Purpose— Long-term trends in stroke incidence in different populations have not been well characterized, largely as a result of the complexities associated with population-based stroke surveillance. Methods— We assessed temporal trends in stroke incidence using standard diagnostic criteria and community-wide surveillance procedures in the population (≈1 million) of Auckland, New Zealand, over 12-month calendar periods in 1981–1982, 1991–1992, and 2002–2003. Age-adjusted first-ever (incident) and total (attack) rates, and temporal trends, were reported with 95% confidence intervals (CIs). Rates were analyzed by sex and major age groups. Results— From 1981 to 1982, stroke rates were stable in 1991–1992 and then declined in 2002–2003, to produce overall modest declines in standardized incidence (11% 95% CI, 1 to 19%) and attack rates (9% 95% CI, 0 to 16%) between the first and last study periods. Some favorable downward trends in vascular risk factors such as cigarette smoking were counterbalanced by increasing age and body mass index, and frequency of diabetes, in patients with stroke. Conclusions— There has been a modest decline in stroke incidence in Auckland over the last 2 decades, mainly during 1991 to 2003, in association with ergent trends in major risk factors.
Publisher: Elsevier BV
Date: 10-1993
Location: United States of America
Start Date: 2003
End Date: 2005
Funder: Hydro Electric Corporation
View Funded ActivityStart Date: 2003
End Date: 2005
Funder: Australian Research Council
View Funded ActivityStart Date: 2003
End Date: 2003
Funder: Hydro Electric Corporation
View Funded ActivityStart Date: 2014
End Date: 2016
Funder: Holsworth Wildlife Research Endowment
View Funded ActivityStart Date: 2015
End Date: 2015
Funder: Australian Institute of Nuclear Science & Engineering
View Funded ActivityStart Date: 2016
End Date: 2016
Funder: University of Tasmania
View Funded Activity