ORCID Profile
0000-0002-8686-0671
Current Organisations
Universität Wien
,
University of Vienna
,
University of Tasmania
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Related Links
Publications
An assessment of ectomycorrhizal fungal communities in Tasmanian temperate high-altitude Eucalyptus delegatensis forest reveals a dominance of the Cortinariaceae
Publisher: Springer Science and Business Media LLC
Date: 22-08-2017
DOI: 10.1007/S00572-016-0725-0
Abstract: Fungal ersity of Australian eucalypt forests remains underexplored. We investigated the ectomycorrhizal (EcM) fungal community characteristics of declining temperate eucalypt forests in Tasmania. Within this context, we explored the ersity of EcM fungi of two forest types in the northern highlands in the east and west of the island. We hypothesised that EcM fungal community richness and composition would differ between forest type but that the Cortinariaceae would be the dominant family irrespective of forest type. We proposed that EcM richness would be greater in the wet sclerophyll forest than the dry sclerophyll forest type. Using both sporocarps and EcM fungi from root tips lified by PCR and sequenced in the rDNA ITS region, 175 EcM operational taxonomic units were identified of which 97 belonged to the Cortinariaceae. The Cortinariaceae were the most erse family, in both the above and below ground communities. Three distinct fungal assemblages occurred within the wet and dry sclerophyll forest types and two geographic regions that were studied, although this pattern did not remain when only the root tip data were analysed. EcM sporocarp richness was unusually higher than root tip richness and EcM richness did not significantly differ among forest types. The results are discussed in relation to the importance of the Cortinariaceae and the drivers of EcM fungal community composition within these forests.
Seasonal dynamics in understorey abundance and carbohydrate concentration in relation to browsing and bark stripping of Tasmanian Pinus radiata plantations
Publisher: Elsevier BV
Date: 05-2013
Living on the edge
Publisher: Wiley
Date: 20-05-2021
DOI: 10.1111/GCB.15641
Abstract: Globally, forests are facing an increasing risk of mass tree mortality events associated with extreme droughts and higher temperatures. Hydraulic dysfunction is considered a key mechanism of drought‐triggered dieback. By leveraging the climate breadth of the Australian landscape and a national network of research sites (Terrestrial Ecosystem Research Network), we conducted a continental‐scale study of physiological and hydraulic traits of 33 native tree species from contrasting environments to disentangle the complexities of plant response to drought across communities. We found strong relationships between key plant hydraulic traits and site aridity. Leaf turgor loss point and xylem embolism resistance were correlated with minimum water potential experienced by each species. Across the data set, there was a strong coordination between hydraulic traits, including those linked to hydraulic safety, stomatal regulation and the cost of carbon investment into woody tissue. These results illustrate that aridity has acted as a strong selective pressure, shaping hydraulic traits of tree species across the Australian landscape. Hydraulic safety margins were constrained across sites, with species from wetter sites tending to have smaller safety margin compared with species at drier sites, suggesting trees are operating close to their hydraulic thresholds and forest biomes across the spectrum may be susceptible to shifts in climate that result in the intensification of drought.
Comparing direct carbonate and standard graphite 14C determinations of biogenic carbonates
Publisher: Cambridge University Press (CUP)
Date: 19-01-2021
DOI: 10.1017/RDC.2020.131
Abstract: The direct carbonate procedure for accelerator mass spectrometry radiocarbon (AMS 14 C) dating of submilligram s les of biogenic carbonate without graphitization is becoming widely used in a variety of studies. We compare the results of 153 paired direct carbonate and standard graphite 14 C determinations on single specimens of an assortment of biogenic carbonates. A reduced major axis regression shows a strong relationship between direct carbonate and graphite percent Modern Carbon (pMC) values (m = 0.996 95% CI [0.991–1.001]). An analysis of differences and a 95% confidence interval on pMC values reveals that there is no significant difference between direct carbonate and graphite pMC values for 76% of analyzed specimens, although variation in direct carbonate pMC is underestimated. The difference between the two methods is typically within 2 pMC, with 61% of direct carbonate pMC measurements being higher than their paired graphite counterpart. Of the 36 specimens that did yield significant differences, all but three missed the 95% significance threshold by 1.2 pMC or less. These results show that direct carbonate 14 C dating of biogenic carbonates is a cost-effective and efficient complement to standard graphite 14 C dating.
Bird assemblages in Tasmanian clearcuts are influenced by the age of eucalypt regeneration but not by distance from mature forest
Publisher: Elsevier BV
Date: 12-2014
Regeneration of Eucalyptus Species in an Eastern Tasmanian Coastal Forest in the Presence of Phytophthora cinnamomi
Publisher: CSIRO Publishing
Date: 1988
DOI: 10.1071/BT9880205
Abstract: The composition of Eucalyptus regeneration following Phytophthora cinnamomi infestation in an E. sieberi open, shrubby forest is examined. Surveys made to determine the composition of the original stand show that E. sieberi dominated all sites examined in the study area. Regeneration of Eucalyptus spp. from both aerial sowing (in a logged area) and natural seed fall (in an unlogged area) has resulted in increased species heterogeneity. Even in the presence of P. cinnamomi, the susceptible E. sieberi and E. obliqua seedling regenerations have significantly higher relative height growth rates than the field-resistant species E. globulus, E. ovata and E. viminalis on all sites examined.
Monitoring the implementation of variable retention silviculture in wet eucalypt forest: A key element of successful adaptive management
Publisher: Elsevier BV
Date: 06-2017
Solid-wood production from temperate eucalypt plantations: a Tasmanian case study
Publisher: National Inquiry Services Center (NISC)
Date: 07-2008
Trophic position determines functional and phylogenetic recovery after disturbance within a community
Publisher: Wiley
Date: 29-03-2017
A robust multi-kernel change detection framework for detecting leaf beetle defoliation using Landsat 7 ETM+ data
Publisher: Elsevier BV
Date: 12-2016
An introduction to the Australian and New Zealand flux tower network – OzFlux
Publisher: Copernicus GmbH
Date: 31-10-2016
Abstract: Abstract. OzFlux is the regional Australian and New Zealand flux tower network that aims to provide a continental-scale national research facility to monitor and assess trends, and improve predictions, of Australia's terrestrial biosphere and climate. This paper describes the evolution, design, and current status of OzFlux as well as provides an overview of data processing. We analyse measurements from all sites within the Australian portion of the OzFlux network and two sites from New Zealand. The response of the Australian biomes to climate was largely consistent with global studies except that Australian systems had a lower ecosystem water-use efficiency. Australian semi-arid/arid ecosystems are important because of their huge extent (70 %) and they have evolved with common moisture limitations. We also found that Australian ecosystems had a similar radiation-use efficiency per unit leaf area compared to global values that indicates a convergence toward a similar biochemical efficiency. The two New Zealand sites represented extremes in productivity for a moist temperate climate zone, with the grazed dairy farm site having the highest GPP of any OzFlux site (2620 gC m−2 yr−1) and the natural raised peat bog site having a very low GPP (820 gC m−2 yr−1). The paper discusses the utility of the flux data and the synergies between flux, remote sensing, and modelling. Lastly, the paper looks ahead at the future direction of the network and concludes that there has been a substantial contribution by OzFlux, and considerable opportunities remain to further advance our understanding of ecosystem response to disturbances, including drought, fire, land-use and land-cover change, land management, and climate change, which are relevant both nationally and internationally. It is suggested that a synergistic approach is required to address all of the spatial, ecological, human, and cultural challenges of managing the delicately balanced ecosystems in Australasia.
A continental-scale assessment of variability in leaf traits: Within species, across sites and between seasons
Publisher: Wiley
Date: 06-04-2018
A Theory of Partisan Support and Entry Deterrence in Electoral Competition
Publisher: SAGE Publications
Date: 04-2006
Abstract: I develop a model of electoral competition with partisan c aign support. Voters’ utilities are defined over candidate locations and the amounts of party c aign support that they receive. Parties’ utilities are defined over the location of the winning candidate and how much support they dole out for their candidates. Analytical results identify cases in which parties will successfully pull the electorally induced preferences of their members away from their median voters’ ideal points and towards the party’s most favored policies. Equilibrium results yield several testable hypotheses. First, candidate policy positions and parties’ c aign contributions should be responsive to district partisan predisposition, independent of the policy preferences of a district’s median voter. Second, uncontested elections should occur more often in politically-lopsided districts than in districts where there are more even levels of political competition. Finally, there should be an inverse relationship between candidate policy extremity and partisan c aign support.
Succession of mosses, liverworts and ferns on coarse woody debris, in relation to forest age and log decay in Tasmanian wet eucalypt forest
Publisher: Elsevier BV
Date: 10-2010
Genetic correlations in multi-species plant/herbivore interactions at multiple genetic scales. Implications for eco-evolutionary dynamics
Publisher: Elsevier
Date: 2014
A cross‐continental comparison of plant and beetle responses to retention of forest patches during timber harvest
Publisher: Wiley
Date: 27-10-2016
DOI: 10.1002/EAP.1406
Abstract: Timber harvest can adversely affect forest biota. Recent research and application suggest that retention of mature forest elements (retention forestry), including unharvested patches (or aggregates) within larger harvested units, can benefit bio ersity compared to clearcutting. However, it is unclear whether these benefits can be generalized among the erse taxa and biomes in which retention forestry is practiced. Lack of comparability in methods for s ling and analyzing responses to timber harvest and edge creation presents a challenge to synthesis. We used a consistent methodology (similarly spaced plots or traps along transects) to investigate responses of vascular plants and ground-active beetles to aggregated retention at replicate sites in each of four temperate and boreal forest types on three continents: Douglas-fir forests in Washington, USA aspen forests in Minnesota, USA spruce forests in Sweden and wet eucalypt forests in Tasmania, Australia. We assessed (1) differences in local (plot-scale) species richness and composition between mature (intact) and regenerating (previously harvested) forest (2) the lifeboating function of aggregates (capacity to retain species of unharvested forest) and whether intact forests and aggregates (3) are susceptible to edge effects and (4) influence the adjacent regenerating forest. Intact and harvested forests differed in composition but not richness of plants and beetles. The magnitude of this difference was generally similar among regions, but there was considerable heterogeneity of composition within and among replicate sites. Aggregates within harvest units were effective at lifeboating for both plant and beetle communities. Edge effects were uncommon even within the aggregates. In contrast, effects of forest influence on adjacent harvested areas were common and as strong for aggregates as for larger blocks of intact forest. Our results provide strong support for the widespread application of aggregated retention in boreal and temperate forests. The consistency of pattern in four very different regions of the world suggests that, for forest plants and beetles, responses to aggregated retention are likely to apply more widely. Our results suggest that through strategic placement of aggregates, it is possible to maintain the natural heterogeneity and bio ersity of mature forests managed for multiple objectives.
Costs and benefits of a leaf beetle Integrated Pest Management (IPM) program II. Cost-benefit analysis
Publisher: Informa UK Limited
Date: 02-01-2018
Effect of hypoxia and anoxia on invertebrate behaviour: ecological perspectives from species to community level
Publisher: Copernicus GmbH
Date: 21-03-2014
Abstract: Abstract. Coastal hypoxia and anoxia have become a global key stressor to marine ecosystems, with almost 500 dead zones recorded worldwide. By triggering cascading effects from the in idual organism to the community- and ecosystem level, oxygen depletions threaten marine bio ersity and can alter ecosystem structure and function. By integrating both physiological function and ecological processes, animal behaviour is ideal for assessing the stress state of benthic macrofauna to low dissolved oxygen. The initial response of organisms can serve as an early warning signal, while the successive behavioural reactions of key species indicate hypoxia levels and help assess community degradation. Here we document the behavioural responses of a representative spectrum of benthic macrofauna in the natural setting in the Northern Adriatic Sea (Mediterranean). We experimentally induced small-scale anoxia with a benthic chamber in 24 m depth to overcome the difficulties in predicting the onset of hypoxia, which often hinders full documentation in the field. The behavioural reactions were documented with a time-lapse camera. Oxygen depletion elicited significant and repeatable changes in general (visibility, locomotion, body movement and posture, location) and species-specific reactions in virtually all organisms (302 in iduals from 32 species and 2 species groups). Most atypical (stress) behaviours were associated with specific oxygen thresholds: arm-tipping in the ophiuroid Ophiothrix quinquemaculata, for ex le, with the onset of mild hypoxia ( 2 mL O2 L−1), the emergence of polychaetes on the sediment surface with moderate hypoxia ( 1 mL O2 L−1), the emergence of the infaunal sea urchin Schizaster canaliferus on the sediment with severe hypoxia ( 0.5 mL O2 L−1) and heavy body rotations in sea anemones with anoxia. Other species changed their activity patterns, for ex le the circadian rhythm in the hermit crab Paguristes eremita or the bioherm-associated crab Pisidia longimana. Intra- and interspecific reactions were weakened or changed: decapods ceased defensive and territorial behaviour, and predator–prey interactions and relationships shifted. This nuanced scale of resolution is a useful tool to interpret present benthic community status (behaviour) and past mortalities (community composition, e.g. survival of tolerant species). This information on the sensitivity (onset of stress response), tolerance (mortality, survival), and characteristics (i.e. life habit, functional role) of key species also helps predict potential future changes in benthic structure and ecosystem functioning. This integrated approach can transport complex ecological processes to the public and decision-makers and help define specific monitoring, assessment and conservation plans.
How well does a log decay-class system capture the ecology of decomposition? - A case-study from Tasmanian Eucalyptus obliqua forest
Publisher: Elsevier BV
Date: 08-2011
Multigene phylogenetic study of Cyclaneusma species
Publisher: Wiley
Date: 14-03-2014
DOI: 10.1111/EFP.12101
The contribution of insects to global forest deadwood decomposition
Publisher: Springer Science and Business Media LLC
Date: 09-2021
The genetic variation in the timing of heteroblastic transition in Eucalyptus globulus is stable across environments
Publisher: CSIRO Publishing
Date: 2011
DOI: 10.1071/BT10313
Abstract: Eucalyptus globulus is one of the best known ex les of a heteroblastic plant. It exhibits a dramatic phase change from distinctive juvenile to adult leaves, but the timing of this transition varies markedly. We examined the genetic variation in the timing of heteroblastic transition using five large open-pollinated progeny trials established in north-western Tasmania. We used univariate and multi-variate mixed models to analyse data on the presence/absence of adult or intermediate foliage at age 2 years from a total of 14 860 trees across five trials, as well as height to heteroblastic phase change from one trial. Up to 566 families and 15 geographic subraces of E. globulus were represented in the trials. The timing of the heteroblastic transition was genetically variable and under strong genetic control at the subrace and within-subrace level, with single-trial narrow-sense heritability estimates for the binary trait averaging 0.50 (range 0.44–0.65). The degree of quantitative trait differentiation in the timing of heteroblastic transition among subraces, as measured by QST, exceeded the published level of neutral molecular marker (FST) differentiation in all cases, arguing that ersifying selection has contributed to shaping broad-scale patterns of genetic differentiation. Most inter-trial genetic correlations were close to one at the subrace and additive genetic levels, indicating that the genetic variation in this important developmental change is expressed in a stable manner and that genotype-by-environment interaction is minimal across the environments studied.
Microclimate through space and time: Microclimatic variation at the edge of regeneration forests over daily, yearly and decadal time scales
Publisher: Elsevier BV
Date: 12-2014
Microhabitat use and prey selection of the coral-feeding snail Drupella cornus in the northern Red Sea
Publisher: Springer Science and Business Media LLC
Date: 06-01-2010
Living near the edge: Being close to mature forest increases the rate of succession in beetle communities
Publisher: No publisher found
Date: 2015
DOI: 10.5061/DRYAD.10C30
Termite sensitivity to temperature affects global wood decay rates
Publisher: American Association for the Advancement of Science (AAAS)
Date: 28-09-2022
Abstract: Deadwood is a large global carbon store with its store size partially determined by biotic decay. Microbial wood decay rates are known to respond to changing temperature and precipitation. Termites are also important decomposers in the tropics but are less well studied. An understanding of their climate sensitivities is needed to estimate climate change effects on wood carbon pools. Using data from 133 sites spanning six continents, we found that termite wood discovery and consumption were highly sensitive to temperature (with decay increasing .8 times per 10°C increase in temperature)—even more so than microbes. Termite decay effects were greatest in tropical seasonal forests, tropical savannas, and subtropical deserts. With tropicalization (i.e., warming shifts to tropical climates), termite wood decay will likely increase as termites access more of Earth’s surface.
Forest succession where trees become smaller and wood carbon stocks reduce
Publisher: Elsevier BV
Date: 06-2017
A history of forestry management responses to climatic variability and their current relevance for developing climate change adaptation strategies
Publisher: Oxford University Press (OUP)
Date: 10-11-2014
Growth responses ofEucalyptus globulusandE. nitensto pruning and fertiliser treatments in a plantation managed for solid-wood products
Publisher: National Inquiry Services Center (NISC)
Date: 04-2009
Selection and design of Phytophthora management areas for the conservation of threatened flora in Tasmania
Publisher: Elsevier BV
Date: 1996
Crown condition assessment: An accurate, precise and efficient method with broad applicability to Eucalyptus
Publisher: Wiley
Date: 15-12-2011
Temperate eucalypt forest decline is linked to altered ectomycorrhizal communities mediated by soil chemistry
Publisher: Elsevier BV
Date: 08-2013
Harmonisation of methods for the assessment and reporting of forest health in Australia — a starting point: A discussion paper prepared by a sub-committee of the Forest Research Working Group on Forest Health
Publisher: Informa UK Limited
Date: 2003
Data obtained from acoustic recording units and from field observer point counts of Tasmanian forest birds are similar but not the same
Publisher: BirdLife Australia, Ltd.
Date: 2018
DOI: 10.20938/AFO35030039
Growth responses of Eucalyptus globulus Labill. to nitrogen application and severity, pattern and frequency of artificial defoliation
Publisher: Elsevier BV
Date: 07-2006
Impacts of Teratosphaeria leaf disease on plantation Eucalyptus globulus productivity
Publisher: Wiley
Date: 30-11-2016
DOI: 10.1111/EFP.12310
The origin and extent of discolouration and decay in stems of young regrowth eucalypts in southern Tasmania
Publisher: Canadian Science Publishing
Date: 1996
DOI: 10.1139/X26-001
Abstract: Two hundred thirteen potential sawlog trees from 22- to 34-year-old Eucalyptusregnans F. Muell. and Eucalyptusdelegatensis R.T. Baker regrowth forests from four sites in southern Tasmania were felled, dissected, and assessed for discolouration and decay. Of the aboveground origins, branches accounted for more than half of the discolouration and decay both in terms of incidence and volume. Stem-boring insects and branch crotches were the source of most of the remaining aboveground decay. Butt rots accounted for only 7% of the columns of discolouration and decay, but their incidence showed considerable local variation such that on some plots they accounted for more than 20% of the total volume of discolouration and decay in the bottom 6 m of the stem. Decay in in idual trees was 0 to 17.5% of total volume, with a mean of 1.3%. Only 12% of the trees were completely free of discolouration and decay, while 25% of the trees had discolouration and decay in more than 1.5% of the total stem volume. Whilst both the incidence and percent volume of decay showed considerable, and often statistically significant, variation both among sites and locally, among plots within sites, the greatest proportion of the variation was tree to tree. Our ability to limit future timber losses resulting from decay will require that those site, stand, and most importantly, tree factors that influence the prevalence of, and susceptibility to, decay in eucalypts are identified.
Variation in mammal browsing damage between eucalypt plantations in Tasmania, and attempts to associate the variation with environmental features
Publisher: Informa UK Limited
Date: 2011
Temperature sensitivity of termites determines global wood decay rates
Publisher: Research Square Platform LLC
Date: 11-01-2022
DOI: 10.21203/RS.3.RS-1242094/V1
Abstract: Animals, such as termites, have largely been overlooked as global-scale drivers of biogeochemical cycles 1,2 , despite site-specific findings 3,4 . Deadwood turnover, an important component of the carbon cycle, is driven by multiple decay agents. Studies have focused on temperate systems 5,6 , where microbes dominate decay 7 . Microbial decay is sensitive to temperature, typically doubling per 10°C increase (decay effective Q 10 = ~2) 8–10 . Termites are important decayers in tropical systems 3,11–13 and differ from microbes in their population dynamics, dispersal, and substrate discovery 14–16 , meaning their climate sensitivities also differ. Using a network of 133 sites spanning 6 continents, we report the first global field-based quantification of temperature and precipitation sensitivities for termites and microbes, providing novel understandings of their response to changing climates. Temperature sensitivity of microbial decay was within previous estimates. Termite discovery and consumption were both much more sensitive to temperature (decay effective Q 10 = 6.53), leading to striking differences in deadwood turnover in areas with and without termites. Termite impacts were greatest in tropical seasonal forests and savannas and subtropical deserts. With tropicalization 17 (i.e., warming shifts to a tropical climate), the termite contribution to global wood decay will increase as more of the earth’s surface becomes accessible to termites.
Susceptibility of Selected Tasmanian Rare Plants to Phytophthora cinnamomi
Publisher: CSIRO Publishing
Date: 1995
DOI: 10.1071/BT9950379
Abstract: Forty-seven species native to Tasmania were tested for their susceptibility to Phytophthora cinnamomi. Plants were propagated from cuttings and or seed. The plants were root inoculated by irrigating the moist growing medium with infected broth. In iduals in 36 species proved to be susceptible, four species were resistant hosts, three species resistant and four species returned inconclusive results. Epacris contained the most suceptible species and the level of susceptibility varied considerably within the Epacris, but also in Acacia and Pultenaea. Species from a number of genera contained an apparently resistant element.
Changes in soil moisture drive soil methane uptake along a fire regeneration chronosequence in a eucalypt forest landscape
Publisher: Wiley
Date: 23-09-2015
DOI: 10.1111/GCB.13003
Abstract: Disturbance associated with severe wildfires (WF) and WF simulating harvest operations can potentially alter soil methane (CH4 ) oxidation in well-aerated forest soils due to the effect on soil properties linked to diffusivity, methanotrophic activity or changes in methanotrophic bacterial community structure. However, changes in soil CH4 flux related to such disturbances are still rarely studied even though WF frequency is predicted to increase as a consequence of global climate change. We measured in-situ soil-atmosphere CH4 exchange along a wet sclerophyll eucalypt forest regeneration chronosequence in Tasmania, Australia, where the time since the last severe fire or harvesting disturbance ranged from 9 to >200 years. On all s ling occasions, mean CH4 uptake increased from most recently disturbed sites (9 year) to sites at stand 'maturity' (44 and 76 years). In stands >76 years since disturbance, we observed a decrease in soil CH4 uptake. A similar age dependency of potential CH4 oxidation for three soil layers (0.0-0.05, 0.05-0.10, 0.10-0.15 m) could be observed on incubated soils under controlled laboratory conditions. The differences in soil CH4 uptake between forest stands of different age were predominantly driven by differences in soil moisture status, which affected the diffusion of atmospheric CH4 into the soil. The observed soil moisture pattern was likely driven by changes in interception or evapotranspiration with forest age, which have been well described for similar eucalypt forest systems in south-eastern Australia. Our results imply that there is a large amount of variability in CH4 uptake at a landscape scale that can be attributed to stand age and soil moisture differences. An increase in severe WF frequency in response to climate change could potentially increase overall forest soil CH4 sinks.
Risk of exotic pests to the Australian forest industry
Publisher: Informa UK Limited
Date: 02-01-2018
Diversity and identification of fungi associated with needles ofPinus radiatain Tasmania
Publisher: National Inquiry Services Center (NISC)
Date: 14-12-2015
First Report ofGloeosporidinasp. Isolated from Lesions on Shoots and Leaves ofEucalyptus nitensandE. globulusin Australia
Publisher: Scientific Societies
Date: 05-2000
DOI: 10.1094/PDIS.2000.84.5.510
Abstract: A mitosporic fungus with small conidia was frequently isolated from blighted shoots and leaves of young plantation trees and nursery seedlings of Eucalyptus nitens and E. globulus in Tasmania. Lesions on these shoots and leaves are purple to light brown, becoming necrotic with well-defined margins. The fungus is characterized by having acervular conidiomata, cylindrical to lageniform monophialidic conidiogenous cells, and spheroid to pyriform conidia that are hyaline, aseptate, and often produced in chains. The morphological characteristics fit the published description for the genus Gloeosporidina. This is the first record of a member in the genus from Australia and the first time a Gloeosporidina species has been found on eucalypts.
Needle fungi in young Tasmanian Pinus radiata plantations in relation to elevation and rainfall
Publisher: Scion
Date: 12-2015
Stem Diseases in Nursery Seedlings Caused by Phytophthora Cactorum, P. Citricola and Pythium Anandrum.
Publisher: Springer Science and Business Media LLC
Date: 1985
DOI: 10.1071/APP9850057
Harknessia species occurring on eucalypt leaves in Tasmania, Australia
Publisher: Elsevier BV
Date: 07-2000
The harvested side of edges: Effect of retained forests on the re-establishment of biodiversity in adjacent harvested areas
Publisher: Elsevier BV
Date: 08-2013
Measuring a Fire. The Story of the January 2019 Fire Told from Measurements at the Warra Supersite, Tasmania
Publisher: MDPI AG
Date: 25-03-2021
DOI: 10.3390/FIRE4020015
Abstract: Non-stand-replacing wildfires are the most common natural disturbance in the tall eucalypt forests of Tasmania, yet little is known about the conditions under which these fires burn and the effects they have on the forest. A dry lightning storm in January 2019 initiated the Riveaux Road fire. This fire burnt nearly 64,000 ha of land, including tall eucalypt forests at the Warra Supersite. At the Supersite, the passage of the fire was recorded by a suite of instruments measuring weather conditions and fluxes (carbon, water and energy), while a network of permanent plots measured vegetation change. Weather conditions in the lead-up and during the passage of the fire through the Supersite were mild—a moderate forest fire danger index. The passage of the fire through the Supersite caused a short peak in air temperature coinciding with a sharp rise in CO2 emissions. Fine fuels and ground vegetation were consumed but the low intensity fire only scorched the understorey trees, which subsequently died and left the Eucalyptus obliqua canopy largely intact. In the aftermath of the fire, there was prolific seedling regeneration, a sustained reduction in leaf area index, and the forest switched from being a carbon sink before the fire to becoming a carbon source during the first post-fire growing season.
Benchmarking forest health surveillance and biosecurity activities for managing Australia’s exotic forest pest and pathogen risks
Publisher: Informa UK Limited
Date: 02-01-2018
Landscape Structure and Mature Forest Biodiversity in Wet Eucalypt Forests: A Spatial Analysis of Timber Production Areas in South-Eastern Australia
Publisher: MDPI AG
Date: 17-03-2017
DOI: 10.3390/F8030089
A latitudinal cline in disease resistance of a host tree
Publisher: Springer Science and Business Media LLC
Date: 05-12-2013
DOI: 10.1038/HDY.2012.106
Intercomparison of clumping index estimates from POLDER, MODIS, and MISR satellite data over reference sites
Publisher: Elsevier BV
Date: 03-2015
The uncertain impact of climate change on forest ecosystems - How qualitative modelling can guide future research for quantitative model development
Publisher: Elsevier BV
Date: 02-2016
Responses of flora and fauna in wet eucalypt production forest to the intensity of disturbance in the surrounding landscape
Publisher: Elsevier BV
Date: 02-2018
Diversity and ecology of epigeous ectomycorrhizal macrofungal assemblages in a native wet eucalypt forest in Tasmania, Australia
Publisher: Elsevier BV
Date: 08-2011
Soil methane oxidation in both dry and wet temperate eucalypt forests shows a near-identical relationship with soil air-filled porosity
Publisher: Copernicus GmbH
Date: 27-01-2017
Abstract: Abstract. Well-drained, aerated soils are important sinks for atmospheric methane (CH4) via the process of CH4 oxidation by methane-oxidising bacteria (MOB). This terrestrial CH4 sink may contribute towards climate change mitigation, but the impact of changing soil moisture and temperature regimes on CH4 uptake is not well understood in all ecosystems. Soils in temperate forest ecosystems are the greatest terrestrial CH4 sink globally. Under predicted climate change scenarios, temperate eucalypt forests in south-eastern Australia are predicted to experience rapid and extreme changes in rainfall patterns, temperatures and wild fires. To investigate the influence of environmental drivers on seasonal and inter-annual variation of soil–atmosphere CH4 exchange, we measured soil–atmosphere CH4 exchange at high-temporal resolution ( 2 h) in a dry temperate eucalypt forest in Victoria (Wombat State Forest, precipitation 870 mm yr−1) and in a wet temperature eucalypt forest in Tasmania (Warra Long-Term Ecological Research site, 1700 mm yr−1). Both forest soil systems were continuous CH4 sinks of −1.79 kg CH4 ha−1 yr−1 in Victoria and −3.83 kg CH4 ha−1 yr−1 in Tasmania. Soil CH4 uptake showed substantial temporal variation and was strongly controlled by soil moisture at both forest sites. Soil CH4 uptake increased when soil moisture decreased and this relationship explained up to 90 % of the temporal variability. Furthermore, the relationship between soil moisture and soil CH4 flux was near-identical at both forest sites when soil moisture was expressed as soil air-filled porosity (AFP). Soil temperature only had a minor influence on soil CH4 uptake. Soil nitrogen concentrations were generally low and fluctuations in nitrogen availability did not influence soil CH4 uptake at either forest site. Our data suggest that soil MOB activity in the two forests was similar and that differences in soil CH4 exchange between the two forests were related to differences in soil moisture and thereby soil gas diffusivity. The differences between forest sites and the variation in soil CH4 exchange over time could be explained by soil AFP as an indicator of soil moisture status.
Arthropod beta-diversity is spatially and temporally structured by latitude
Publisher: Research Square Platform LLC
Date: 27-10-2022
DOI: 10.21203/RS.3.RS-2180975/V1
Abstract: Global gradients in species bio ersity are expected to reflect tighter packing of species closer to the equator. Yet, empirical validation of these patterns has so far focused on less erse taxa, with comparable assessments of mega- erse groups historically constrained by the taxonomic impediment. Here we assess the temporal and spatial turnover dynamics of arthropod communities s led across 129 globally distributed monitoring sites. Overall, we encountered more than 150,000 unique BINs (i.e., species proxies). We show that global differences in community compositional change are linked to latitudinal, spatial, and temporal gradients, which are largely consistent across biogeographic regions. This general latitudinal imprint on community composition provides a mechanistic underpinning for global bio ersity gradients.
A review of the outcomes of a decade of forest health surveillance of state forests in Tasmania
Publisher: Informa UK Limited
Date: 2008
Relationships between static and dynamic modulus of elasticity for a mixture of clear and decayed eucalypt wood
Publisher: Informa UK Limited
Date: 2003
Evolutionary history shapes the susceptibility of an island tree flora to an exotic pathogen
Publisher: Elsevier BV
Date: 05-2016
The Australian SuperSite Network
Publisher: Elsevier BV
Date: 10-2016
DOI: 10.1016/J.SCITOTENV.2016.05.170
Abstract: Ecosystem monitoring networks aim to collect data on physical, chemical and biological systems and their interactions that shape the biosphere. Here we introduce the Australian SuperSite Network that, along with complementary facilities of Australia's Terrestrial Ecosystem Research Network (TERN), delivers field infrastructure and erse, ecosystem-related datasets for use by researchers, educators and policy makers. The SuperSite Network uses infrastructure replicated across research sites in different biomes, to allow comparisons across ecosystems and improve scalability of findings to regional, continental and global scales. This conforms with the approaches of other ecosystem monitoring networks such as Critical Zone Observatories, the U.S. National Ecological Observatory Network Analysis and Experimentation on Ecosystems, Europe Chinese Ecosystem Research Network International Long Term Ecological Research network and the United States Long Term Ecological Research Network. The Australian SuperSite Network currently involves 10 SuperSites across a erse range of biomes, including tropical rainforest, grassland and savanna wet and dry sclerophyll forest and woodland and semi-arid grassland, woodland and savanna. The focus of the SuperSite Network is on using vegetation, faunal and biophysical monitoring to develop a process-based understanding of ecosystem function and change in Australian biomes and to link this with data streams provided by the series of flux towers across the network. The Australian SuperSite Network is also intended to support a range of auxiliary researchers who contribute to the growing body of knowledge within and across the SuperSite Network, public outreach and education to promote environmental awareness and the role of ecosystem monitoring in the management of Australian environments.
Global Arthropod beta-diversity is spatially and temporally structured by latitude
Publisher: Research Square Platform LLC
Date: 22-09-2023
Macrofungal diversity and community ecology in mature and regrowth wet eucalypt forest in Tasmania: A multivariate study
Publisher: Wiley
Date: 04-2002
Density and strength characteristics of discoloured and pencil-streaked Tasmanian regrowth eucalypts: a preliminary study
Publisher: Informa UK Limited
Date: 2000
L ophodermium pinastri and an unknown species of Teratosphaeriaceae are associated with needle cast in a P inus radiata selection trial
Publisher: Wiley
Date: 21-01-2015
DOI: 10.1111/EFP.12169
Costs and benefits of a leaf beetle Integrated Pest Management (IPM) program. I. Modelling changes in wood volume yields from pest management
Publisher: Informa UK Limited
Date: 02-01-2018
Effectiveness of repellents for reducing damage to eucalypt seedlings by browsing mammals
Publisher: Informa UK Limited
Date: 2008
Relationships between annual rainfall, damage symptoms and insect borer populations in mid-rotationEucalyptus nitensandEucalyptus globulusplantations in Tasmania: can static traps be use
Publisher: Informa UK Limited
Date: 02-01-2014
Endothia gyrosa associated with severe stem cankers on plantation grown Eucalyptus nitens in Tasmania, Australia
Publisher: Wiley
Date: 06-1999
The ecology and diversity of wood-inhabiting macrofungi in a native Eucalyptus obliqua forest of southern Tasmania, Australia
Publisher: Elsevier BV
Date: 02-2011
Bridge to the future: Important lessons from 20 years of ecosystem observations made by the OzFlux network
Publisher: Wiley
Date: 22-03-2022
DOI: 10.1111/GCB.16141
Abstract: In 2020, the Australian and New Zealand flux research and monitoring network, OzFlux, celebrated its 20 th anniversary by reflecting on the lessons learned through two decades of ecosystem studies on global change biology. OzFlux is a network not only for ecosystem researchers, but also for those ‘next users’ of the knowledge, information and data that such networks provide. Here, we focus on eight lessons across topics of climate change and variability, disturbance and resilience, drought and heat stress and synergies with remote sensing and modelling. In distilling the key lessons learned, we also identify where further research is needed to fill knowledge gaps and improve the utility and relevance of the outputs from OzFlux. Extreme climate variability across Australia and New Zealand (droughts and flooding rains) provides a natural laboratory for a global understanding of ecosystems in this time of accelerating climate change. As evidence of worsening global fire risk emerges, the natural ability of these ecosystems to recover from disturbances, such as fire and cyclones, provides lessons on adaptation and resilience to disturbance. Drought and heatwaves are common occurrences across large parts of the region and can tip an ecosystem's carbon budget from a net CO 2 sink to a net CO 2 source. Despite such responses to stress, ecosystems at OzFlux sites show their resilience to climate variability by rapidly pivoting back to a strong carbon sink upon the return of favourable conditions. Located in under‐represented areas, OzFlux data have the potential for reducing uncertainties in global remote sensing products, and these data provide several opportunities to develop new theories and improve our ecosystem models. The accumulated impacts of these lessons over the last 20 years highlights the value of long‐term flux observations for natural and managed systems. A future vision for OzFlux includes ongoing and newly developed synergies with ecophysiologists, ecologists, geologists, remote sensors and modellers.
Combined Stresses in Forests
Publisher: Springer International Publishing
Date: 06-12-2015
Economic appraisal of Sirex Wood Wasp (Sirex noctilio) control in Australian pine plantations
Publisher: Informa UK Limited
Date: 02-01-2018
Climate change and pest risk in temperate eucalypt and radiata pine plantations: a review
Publisher: Informa UK Limited
Date: 03-07-2017
Short- and long-term benefits for forest biodiversity of retaining unlogged patches in harvested areas
Publisher: Elsevier BV
Date: 10-2015
Personality traits as mediators of the relationship between childhood trauma and depression severity in bipolar disorder: A structural equation model.
Publisher: SAGE Publications
Date: 04-08-2022
DOI: 10.1177/00048674221115644
Abstract: Childhood trauma is negatively associated with depression severity in bipolar disorder however, the underlying mechanisms remain unclear. We investigated whether personality traits (neuroticism, extraversion, openness, agreeableness, conscientiousness) mediate the relationship between childhood trauma and the severity of bipolar depression. Data from 209 in iduals with bipolar disorder recruited for the Prechter Longitudinal Study of Bipolar Disorder were analysed. Using structural equation modelling, we examined the direct and indirect associations between childhood trauma (Childhood Trauma Questionnaire) and depression severity (Hamilton Depression Rating Scale) - with the personality traits (NEO Personality Inventory-Revised) as mediators. The direct effect of childhood trauma on depression severity (standardised β = 0.32, 95% bootstrap confidence interval [CI] = 0.20-0.45, Personality traits may be relevant psychological mediators that link childhood trauma to a more severe clinical presentation of bipolar depression. Consequently, a person's personality structure may be a crucial operative factor to incorporate in therapeutic plans when treating in iduals with bipolar disorder who report a history of childhood trauma.
The validity of optimal leaf traits modelled on environmental conditions
Publisher: Wiley
Date: 29-10-2019
DOI: 10.1111/NPH.15495
Abstract: The ratio of leaf intercellular to ambient CO
Quantifying floristic and structural forest maturity: An attribute-based method for wet eucalypt forests
Publisher: Wiley
Date: 23-03-2018
Diversity and phenology of the macrofungal assemblages supported by litter in a tall, wet Eucalyptus obliqua forest in southern Tasmania, Australia
Publisher: Elsevier BV
Date: 02-2011
An analysis of pest risk and potential economic impact of pine wilt disease to Pinus plantations in Australia
Publisher: Informa UK Limited
Date: 02-01-2018
Estimating the spatio-temporal risk of disease epidemics using a bioclimatic niche model
Publisher: Elsevier BV
Date: 11-2010
Hermit crabs and their symbionts: Reactions to artificially induced anoxia on a sublittoral sediment bottom
Publisher: Elsevier BV
Date: 2012
Options for managing chrysomelid leaf beetles in A ustralian eucalypt plantations: reducing the chemical footprint
Publisher: Wiley
Date: 28-06-2013
DOI: 10.1111/AFE.12021
Related Organisations
Related Funding Activities
Establishing Pest Detection Systems In South Pacific Countries And Australia
Start Date: 2006
End Date: 2008
Funder: Australian Centre for International Agricultural Research
View Funded ActivityEvaluating The Costs And Benefits Of Managing New And Existing Biosecurity Threats To Australia’s Plantation Industry.
Start Date: 2015
End Date: 2017
Funder: Forest and Wood Products Australia
View Funded ActivityPersistence Of Mature-forest Biodiversity Elements In A Production-forest Landscape Managed Under A Regional Forest Agreement.
Start Date: 2009
End Date: 2012
Funder: Forest and Wood Products Australia
View Funded ActivityDevelopment Of Forest Health Surveillance In South Pacific Countries
Start Date: 2002
End Date: 2004
Funder: Australian Centre for International Agricultural Research
View Funded Activity