ORCID Profile
0000-0003-3492-4992
Current Organisation
James Cook University
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Environmental Science and Management | Environmental Management | Conservation and Biodiversity | Ecological Applications | Other Studies in Human Society | Marine and Estuarine Ecology (incl. Marine Ichthyology) | Ecological Impacts of Climate Change | Ecosystem Function | Aboriginal and Torres Strait Islander Environmental Knowledge | Marine And Estuarine Ecology (Incl. Marine Ichthyology) | Environmental Sciences Not Elsewhere Classified | Conservation And Biodiversity | Studies In Human Society Not Elsewhere Classified
ANZSRC Socio-Economic Objective (SEO)
Marine protected areas | Ecosystem Adaptation to Climate Change | Coastal and Marine Management Policy | Ecosystem Assessment and Management of Coastal and Estuarine Environments | Remnant vegetation and protected conservation areas (both terrestrial and marine) | Environmental and resource evaluation not elsewhere classified | Living resources (incl. impacts of fishing on non-target species) | Integrated (ecosystem) assessment and management | Expanding Knowledge in the Environmental Sciences | Consumption patterns, population issues and the environment | Expanding Knowledge in the Biological Sciences | Marine Flora, Fauna and Biodiversity | Other environmental aspects | Aboriginal and Torres Strait Islander heritage |
Related Links
Publications
Variation in biogeochemical parameters across intertidal seagrass meadows in the central Great Barrier Reef region
Publisher: Elsevier BV
Date: 2005
DOI: 10.1016/J.MARPOLBUL.2004.10.046
Abstract: This survey provides baseline information on sediment characteristics, porewater, adsorbed and plant tissue nutrients from intertidal coastal seagrass meadows in the central region of the Great Barrier Reef World Heritage Area. Data collected from 11 locations, representative of intertidal coastal seagrass beds across the region, indicated that the chemical environment was typical of other tropical intertidal areas. Results using two different extraction methods highlight the need for caution when choosing an adsorbed phosphate extraction technique, as sediment type affects the analytical outcome. Comparison with published values indicates that the range of nutrient parameters measured is equivalent to those measured across tropical systems globally. However, the nutrient values in seagrass leaves and their molar ratios for Halophila ovalis and Halodule uninervis were much higher than the values from the literature from this and other regions, obtained using the same techniques, suggesting that these species act as nutrient sponges, in contrast with Zostera capricorni. The limited historical data from this region suggest that the nitrogen and phosphorus content of seagrass leaves has increased since the 1970s concomitant with changing land use practice.
False killer whales (Pseudorca crassidens) from Japan and South Africa: Differences in growth and reproduction
Publisher: Wiley
Date: 03-2013
DOI: 10.1111/MMS.12021
A broad-scale assessment of the risk to coastal seagrasses from cumulative threats
Publisher: Elsevier BV
Date: 09-2011
Improving in-water estimates of marine turtle abundance by adjusting aerial survey counts for perception and availability biases
Publisher: Elsevier BV
Date: 10-2015
Preliminary studies of the venoms of some vermivorous conidae
Publisher: Elsevier BV
Date: 11-1970
DOI: 10.1016/0041-0101(70)90002-4
Abstract: Changes in community composition are an important, but hard to predict, effect of climate change. Here, we use a wild-bee study system to test the ability of critical thermal maxima (CT
EXPLOITING MARINE WILDLIFE IN QUEENSLAND: THE COMMERCIAL DUGONG AND MARINE TURTLE FISHERIES, 1847–1969
Publisher: Wiley
Date: 06-10-2008
Unsustainable harvest of dugongs in Torres Strait and Cape York (Australia) waters: two case studies using population viability analysis
Publisher: Wiley
Date: 11-2004
Pleistocene sea level fluctuations and the phylogeography of the dugong in Australian waters
Publisher: Wiley
Date: 03-2013
DOI: 10.1111/MMS.12022
Factors influencing the sustainability of customary dugong hunting by a remote indigenous community
Publisher: No publisher found
Date: 2006
Cetacean-watching in developing countries: A case study from the Mekong river
Publisher: Cambridge University Press
Date: 27-03-2014
Diving behaviour of dugongs, Dugong dugon
Publisher: Elsevier BV
Date: 06-2004
Bridging Knowledges: Understanding and Applying Indigenous and Western Scientific Knowledge for Marine Wildlife Management
Publisher: Informa UK Limited
Date: 03-2013
Satellite Tracking of Sympatric Marine Megafauna Can Inform the Biological Basis for Species Co-Management
Publisher: Public Library of Science (PLoS)
Date: 03-06-2014
Adapting dugong catching techniques to different cultural and environmental settings
Publisher: Wiley
Date: 04-10-2011
Corrigendum to “Diving behaviour of dugongs, Dugong dugon” [J. Exp. Mar. Biol. Ecol. 304 (2004) 203–224]
Publisher: Elsevier BV
Date: 02-2005
Aerial surveys and the potential biological removal technique indicate that the Torres Strait dugong fishery is unsustainable
Publisher: Wiley
Date: 11-2004
Incorporating dugong habitats into the marine protected area design for the Great Barrier Reef Marine Park, Queensland, Australia
Publisher: Elsevier BV
Date: 2008
Seagrass as pasture for seacows: Landscape-level dugong habitat evaluation
Publisher: Elsevier BV
Date: 2007
Manta tow counts as indices of the distribution and abundance of Acanthaster planci: a reply to De'ath
Publisher: Springer Science and Business Media LLC
Date: 09-1992
DOI: 10.1007/BF00255473
Dugong grazing and turtle cropping: grazing optimization in tropical seagrass systems?
Publisher: Springer Science and Business Media LLC
Date: 04-07-2006
DOI: 10.1007/S00442-006-0477-1
Abstract: Grazing by dugongs and cropping by green turtles have the capacity to alter the subsequent nutritional quality of seagrass regrowth. We examined the effects of simulated light and intensive grazing by dugongs and cropping by turtles on eight nutritionally relevant measures of seagrass chemical composition over two regrowth periods (short-term, 1-4 months long-term, 11-13 months) at two seagrass communities (a mixed species community with Zostera capricorni, Halophila ovalis, Halodule uninervis, Cymodocea rotundata and C. serrulate and a monospecific bed of Halodule uninervis) in tropical Queensland, Australia. The concentrations of organic matter, total nitrogen, total water-soluble carbohydrates, total starch, neutral detergent fiber, acid detergent fiber, acid lignin, as well as the in vitro dry matter digestibility (IVDMD) were measured in the leaves and below-ground parts of each species using near-infrared reflectance spectroscopy (NIRS). Regrowth of preferred species such as H. ovalis and H. uninervis from simulated intensive dugong grazing after a year exhibited increased (by 35 and 25%, respectively, relative to controls) whole-plant N concentrations. Similarly, regrowth of H. ovalis from simulated turtle cropping showed an increase in the leaf N concentration of 30% after a year. However, these gains are tempered by reductions in starch concentrations and increases in fiber. In the short-term, the N concentrations increased while the fiber concentrations decreased. These data provide experimental support for a grazing optimization view of herbivory in the tropical seagrass system, but with feedback in a different manner. Furthermore, we suggest that in areas where grazing is the only major source of natural disturbance, it is likely that there are potential ecosystem level effects if and when numbers of dugongs and turtles are reduced.
Using parallel regional- and local-scale initiatives to inform conservation management of rare wildlife: a case study of the dugong Dugong dugon in Sabah, Malaysia
Publisher: Inter-Research Science Center
Date: 03-12-2010
DOI: 10.3354/ESR00310
The role of the midgut caecum and large intestine in the digestion of sea grasses by the dugong (Mammalia: Sirenia)
Publisher: Elsevier BV
Date: 1977
Adaptive management of the Great Barrier Reef: A globally significant demonstration of the benefits of networks of marine reserves
Publisher: Proceedings of the National Academy of Sciences
Date: 22-02-2010
Abstract: The Great Barrier Reef (GBR) provides a globally significant demonstration of the effectiveness of large-scale networks of marine reserves in contributing to integrated, adaptive management. Comprehensive review of available evidence shows major, rapid benefits of no-take areas for targeted fish and sharks, in both reef and nonreef habitats, with potential benefits for fisheries as well as bio ersity conservation. Large, mobile species like sharks benefit less than smaller, site-attached fish. Critically, reserves also appear to benefit overall ecosystem health and resilience: outbreaks of coral-eating, crown-of-thorns starfish appear less frequent on no-take reefs, which consequently have higher abundance of coral, the very foundation of reef ecosystems. Effective marine reserves require regular review of compliance: fish abundances in no-entry zones suggest that even no-take zones may be significantly depleted due to poaching. Spatial analyses comparing zoning with seabed bio ersity or dugong distributions illustrate significant benefits from application of best-practice conservation principles in data-poor situations. Increases in the marine reserve network in 2004 affected fishers, but preliminary economic analysis suggests considerable net benefits, in terms of protecting environmental and tourism values. Relative to the revenue generated by reef tourism, current expenditure on protection is minor. Recent implementation of an Outlook Report provides regular, formal review of environmental condition and management and links to policy responses, key aspects of adaptive management. Given the major threat posed by climate change, the expanded network of marine reserves provides a critical and cost-effective contribution to enhancing the resilience of the Great Barrier Reef.
Estimating Animal Abundance in Heterogeneous Environments: An Application to Aerial Surveys for Dugongs
Publisher: Wiley
Date: 2006
Enhancement of reproductive success through mate choice in a social rock-wallaby, Petrogale assimilis (Macropodidae) as revealed by microsatellite markers
Publisher: Springer Science and Business Media LLC
Date: 26-06-1998
Corneal avascularity is due to soluble VEGF receptor-1
Publisher: Springer Science and Business Media LLC
Date: 10-2006
DOI: 10.1038/NATURE05249
Management of traditional hunting of dugongs [Dugong dugon (Müller, 1776)] in the northern Great Barrier Reef, Australia
Publisher: Springer Science and Business Media LLC
Date: 1990
DOI: 10.1007/BF02394018
Length of unemployment and psychological distress: Longitudinal and cross-sectional data
Publisher: Elsevier BV
Date: 1990
DOI: 10.1016/0277-9536(90)90041-P
Abstract: Data are presented from the second stage of a longitudinal study of unemployed young people, when their ages ranged from 19 to 24 yr. Data from the first stage, when their ages ranged from 16 to 20 yr, had provided support for a curvilinear hypothesis relating psychological distress or affective well-being, to unemployment duration. According to the curvilinear hypothesis, distress peaks at around 6 months and declines thereafter. In the present study three target groups were distinguished: those unemployed for 3 months or less, those unemployed from 4 to 8 months, and those unemployed for 9 months or more. On most of the dependent measures the 3 month, and 4-8 month groups did not differ, but the 9 month group was significantly worse off than either. It is concluded that the relations between length of unemployment and psychological distress, or well-being, are different in teenagers and young adults. Possible explanations for the differences are discussed.
Optimizing allocation of management resources for wildlife
Publisher: Wiley
Date: 20-11-2007
DOI: 10.1111/J.1523-1739.2006.00589.X
Abstract: Allocating money for species conservation on the basis of threatened species listings is not the most cost-effective way of promoting recovery or minimizing extinction rates. Using ecological and social factors in addition to threat categories, we designed a decision-support process to assist policy makers in their allocation of resources for the management of native wildlife and to clarify the considerations leading to a priority listing. Each species is scored on three criteria at the scale of the relevant jurisdiction: (1) threat category, (2) consequences of extinction, and (3) potential for successful recovery. This approach provides opportunity for independent input by policy makers and other stakeholders (who weight the relative importance of the criteria) and scientists (who score the species against the criteria). Thus the process explicitly separates societal values from the technical aspects of the decision-making process while acknowledging the legitimacy of both inputs. We applied our technique to two Australian case studies at different spatial scales: the frogs of Queensland (1,728,000 km(2) 116 species) and the mammals of the Wet Tropics bioregion (18,500 km(2) 96 species). We identified 7 frog and 10 mammal species as priorities for conservation. The frogs included 1 of the 9 species classified as endangered under Queensland legislation, 3 of the 10 species classified as vulnerable, 2 of the 22 species classified as rare, and 1 of the 75 species classified as least concern. The mammals identified included 3 of the 6 species classified as endangered, 1 of the 4 species classified as vulnerable, 5 of the 11 species classified as rare, and 1 of the 75 species classified as least concern. The methods we used to identify species were robust to comparisons across the two taxonomic groups. We concluded that (1) our process facilitates comparisons of data required to make transparent, cost-effective, and strategic management decisions across taxonomic groups and (2) the process should be used to short-list species for further discussion rather than for allocating resources per se.
Rapid assessment of risks to a mobile marine mammal in an ecosystem-scale marine protected area
Publisher: Wiley
Date: 06-2008
DOI: 10.1111/J.1523-1739.2008.00923.X
Abstract: Ecosystem-scale networks of marine protected areas (MPAs) are important conservation tools, but their effectiveness is difficult to quantify in a time frame appropriate to species conservation because of uncertainties in the data available. The dugong (Dugong dugon) is a mobile marine species that occurs in shallow inshore waters of an ecosystem-scale network of MPAs (the Great Barrier Reef World Heritage Area [GBRWHA]). We developed a rapid approach to assess risk to dugongs in the region and evaluate options to ameliorate that risk. We used expert opinion and a Delphi technique to identify and rank 5 human factors with the potential to adversely affect dugongs and their sea grass habitats: netting, indigenous hunting, trawling, vessel traffic, and poor-quality terrestrial runoff. We then quantified and compared the distribution of these factors with a spatially explicit model of dugong distribution. We estimated that approximately 96% of habitat of high conservation value for dugongs in the GBRWHA is at low risk from human activities. Using a sensitivity analysis, we found that to decrease risk, commercial netting or indigenous hunting had to be reduced in remote areas and the effects of vessel traffic, terrestrial runoff, and commercial netting had to be reduced in urban areas. This approach enabled us to compare and rank risks so as to identify the most severe risks and locate specific sites that require further management attention.
A spatial assessment of the risk to a mobile marine mammal from bycatch
Publisher: Wiley
Date: 11-2008
DOI: 10.1002/AQC.943
Thermal biology of sea snakes and sea kraits
Publisher: Oxford University Press (OUP)
Date: 04-06-2012
DOI: 10.1093/ICB/ICS080
Abstract: Temperature probably had no direct effect on the evolution of sea kraits within their center of origin, a geologically stable thermal zone straddling the equator, but may have indirectly affected expansions and contractions in distributions beyond that zone through global fluctuations that caused alternation of higher and lower sea levels. The northern limit of the Laticauda colubrina complex seems to be the 20°C isotherm in the south, the range does not reach that isotherm because there is no land (also a habitat requirement of sea kraits) within the zone of suitable temperature. The relationship of temperature to the pattern of geographic variation in morphology supports either the hypothesis of peripheral convergence or the developmental hypothesis but does not distinguish between them. Quadratic surfaces relating cumulative scores for coloration and morphological characters to global position showed a strong latitudinal component and an even stronger longitudinal one in which the direction of the latitudinal effect was reversed between east and west. A multivariate analysis revealed that while morphological characters vary significantly by location and climate when tested separately, when the influence of location on morphology is taken into account, no residual relationship between climate and morphology remains. Most marine snakes have mean upper temperature tolerances between 39°C and 40°C and operate at temperatures much nearer their upper thermal limits than their lower limits but still avoid deleterious extremes by ing from excessively hot water to deeper, cooler strata, and by surfacing when water is cold. At the surface in still water in sunlight, Pelamis can maintain its body temperature slightly above that of the water, but whether this is significant in nature is questionable. As temperature falls below 18-20°C, survival time is progressively reduced, accompanied by the successive occurrence of cessation of feeding, cessation of swimming, and failure to orient. Acclimation does not seem to be in this species' repertoire. In the water column, marine snakes track water temperature on land, sea kraits can thermoregulate by basking, selecting favorable locations, and by kleptothermy. Laticauda colubrina adjusts its reproductive cycle geographically in ways that avoid breeding in the coldest months. Mean voluntary ing time is not temperature-dependent within the normal range of temperatures experienced by marine snakes in the field, but is reduced in water colder than 20°C. On land, much as while ing in the sea, sea kraits maintain long periods of apnea intervals between breaths are inversely related to temperature.
Reconstructing reefs: qualitative research and the environmental history of the Great Barrier Reef, Australia
Publisher: SAGE Publications
Date: 11-2008
Abstract: Given recent concerns about the degradation of coral reef ecosystems world-wide, we investigated the environmental history of the Great Barrier Reef of Australia using qualitative methods. In particular, we used archival and oral history sources to reconstruct changes in coral reefs, islands and marine wildlife species for the period 1860—1970 and we evaluated the potential of qualitative methods to inform marine environmental research. Here, we argue that qualitative research offers a valuable means of reconstructing environmental changes, their drivers and their historical contexts. However, we found that qualitative methods also had important limitations. Hence we identify strategies for addressing those challenges and we suggest criteria for ensuring the accuracy and rigor of qualitative sources in marine environmental research. Overall, we argue that qualitative methods offer distinctive insights into the environmental history of the Great Barrier Reef, and that qualitative reconstructions can act as important triggers for conservation of marine ecosystems.
Attraction of dwarf minke whalesBalaenoptera acutorostratato vessels and swimmers in the Great Barrier Reef World Heritage Area – the management challenges of an inquisitive whale
Publisher: Informa UK Limited
Date: 03-2011
Changes in small mammal assemblage structure across a rain forest/open forest ecotone
Publisher: Cambridge University Press (CUP)
Date: 03-1998
DOI: 10.1017/S0266467498000157
Abstract: The effect of the change in vegetation structure from closed rain forest to tall open forest on the small mammal assemblage was studied by live trapping at three sites where the ecotone was very narrow ( 20 m) near the southern end of the Wet Tropics World Heritage Area of Australia. Habitat heterogeneity was significantly higher in the mixed open forest/ecotone area than in the adjacent rain forest. There was a large change in the struture of the small mammal assemblage coincident with the vegetation discontinuity. Although the species richness of small mammals was relatively constant across the gradient, the evenness and ersity of the assemblage declined across the transition from open forest into rain forest and biomass increased, largely due to the high abundance of Rattus fuscipes in the rain forest. The results suggest that the species richness of the small mammal assemblage was not determined by the spatial heterogeneity of the vegetation struture. The species composition of the rain forest is probably related to the historical biogeography of the area whereas the species richness of the wet sclerophyll forest is probably due to a mass-area effect from the adjcant large areas of rain forest and dry sclerophyll forest. However, the evenness, and therefore the ersity of the assemblage, was strongly affected by habitat heterogeneity.
The Sustainability of the Indigenous Dugong Fishery in Torres Strait, Australia / Papua New Guinea
Publisher: Wiley
Date: 02-12-1997
The dugong (Dugong dugon (Müller)) in the seagrass system
Publisher: Elsevier BV
Date: 11-1977
Present-day hunting and distribution of dugongs in the Wellesley Islands (Queensland): Implications for conservation
Publisher: No publisher found
Date: 1981
The role of ethics in experimental marine biology and ecology
Publisher: Elsevier BV
Date: 03-2004
Adaptive management of marine mega-fauna in a changing climate
Publisher: Springer Science and Business Media LLC
Date: 14-06-2016
Local assessments of marine mammals in cross-cultural environments
Publisher: Springer Science and Business Media LLC
Date: 26-08-2014
The economic influence of community-based dolphin watching on a local economy in a developing country: Implications for conservation
Publisher: Elsevier BV
Date: 07-2012
Minimizing errors in the analysis of dive recordings from shallow-diving animals
Publisher: Elsevier BV
Date: 04-2011
Establishing representative no-take areas in the Great Barrier Reef: Large-scale implementation of theory on marine protected areas
Publisher: Wiley
Date: 12-2005
Some studies on the oxygen affinity of haemoglobin from the dugong
Publisher: Elsevier BV
Date: 1978
The unusual metal status of the dugong Dugon dugon
Publisher: Springer Science and Business Media LLC
Date: 1980
DOI: 10.1007/BF00390738
Improving population estimates by quantifying diving and surfacing patterns: A dugong example
Publisher: Wiley
Date: 07-05-2013
DOI: 10.1111/MMS.12041
Protection of elephants and sustainable use of ivory in Thailand
Publisher: Cambridge University Press (CUP)
Date: 14-09-2021
DOI: 10.1017/S0030605321000077
Abstract: The Asian elephant Elephas maximus is of cultural significance for the Thai people. The development of legal protection for elephants in Thailand dates back to the 17th century, reflecting concerns about both human livelihoods and elephant conservation. The legal status of privately owned, captive elephants differs from that of wild in iduals, with consequences for the lawful use of ivory from captive animals. Prior to 2015, the lack of comprehensive measures to control the Thai ivory market enabled the laundering of illegally sourced ivory in the country. The Thai government introduced legal reforms in 2015, imposing strict controls over the possession and domestic trade of ivory from captive Asian elephants, and aligning the protection of African elephants and their ivory with CITES regulations. Nonetheless, the sustainable use of Thai ivory remains disputed, and international pressure to close the commercial trade in domestic ivory persists. Here we review this complex situation, aiming to inform future reforms. Consolidation of laws related to elephants and ivory would facilitate law enforcement and compliance. Use of an electronic database would improve the monitoring of ivory movements and aid the implementation and enforcement of laws.
The caseinase activity of some vermivorous cone shell venoms
Publisher: Elsevier BV
Date: 1971
DOI: 10.1016/0041-0101(71)90044-4
Abstract: In this review article, we outline the evidence linking attachment adversity to psychosis, from the premorbid stages of the disorder to its clinical forms. To better understand the neurobiological mechanisms through which insecure attachment may contribute to psychosis, we identify at least five neurobiological pathways linking attachment to risk for developing psychosis. Besides its well documented influence on the hypothalamic-pituary-adrenal (HPA) axis, insecure attachment may also contribute to neurodevelopmental risk through the dopaminergic and oxytonergic systems, as well as bear influence on neuroinflammation and oxidative stress responses. We further consider the neuroscientific and behavioral studies that underpin mentalization as a suite of processes potentially moderating the risk to transition to psychotic disorders. In particular, mentalization may help the in idual compensate for endophenotypical impairments in the integration of sensory and metacognitive information. We propose a model where embodied mentalization would lie at the core of a protective, resilience response mitigating the adverse and potentially pathological influence of the neurodevelopmental cascade of risk for psychosis.
Provisioning by tourists affects the behaviour but not the body condition of Mareeba rock-wallabies (Petrogale mareeba)
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/WR03083
Abstract: Feeding free-ranging native animals is a form of wildlife-based tourism that is particularly popular in Australia as a result of the cryptic nature of many native species. The colony of Mareeba rock-wallabies (Petrogale mareeba) at 'Granite Gorge', North Queensland, where tourists feed a spatially defined subset of animals daily, was studied to determine the effects of provisioning on their behaviour and body condition. Provisioned P. mareeba had higher activity levels, including higher aggression levels, and spent more time performing contact behaviours (including mutual and non-mutual allogrooming) than did non-provisioned animals. Possible explanations for increased aggression include competition over provisioned food and territorial defence. Increased contact behaviours may serve to reduce tension caused by provisioning. The diurnal activities of the provisioned rock-wallabies were dictated by the activities of tourists. Provisioned rock-wallabies emerged from their shelters to receive food much earlier each afternoon than did the unprovisioned animals. The level of autogrooming exhibited by the provisioned wallabies was much higher than that of the unprovisioned animals, presumably as a thermoregulatory response to the high afternoon temperatures. Although provisioned P. mareeba feed more, their higher activity levels explain the lack of difference in the body condition between the two groups.
Is attempting to change marine mammal behaviour a generic solution to the bycatch problem? A dugong case study
Publisher: Wiley
Date: 20-04-2007
Mapping seagrass cost-effectively in the Coral Triangle: Sabah, Malaysia as a case study
Publisher: CSIRO Publishing
Date: 2015
DOI: 10.1071/PC14908
Abstract: Knowledge of the distribution and relative abundance of seagrass communities in the Coral Triangle is limited, despite their global significance and the vital ecosystem services they perform for local human populations, threatened species such as dugongs and green turtles, as well as the role of being a globally significant carbon stock. To address this gap and investigate cost-effective methods in data-poor regions, we conducted seagrass mapping near two islands off the coast of Sabah in Malaysia: Banggi Island (7°15′N, 117°12′E) and Mantanani Island (6°43′N, 116°21′E). We used a staged approach that included: (1) interview surveys, (2) manta tow and spot surveys, and (3) comprehensive transect surveys. Approximately 415 ha and 112 ha of seagrass meadows were mapped off Banggi Island and Mantanani Island respectively. We found 10 species of seagrasses from two families: Halophila ovalis, Halodule uninervis (broad and thin leaf varieties), Thalassia hemprichii, Cymodocea rotundata, Halophila decipiens, Halophila spinulosa, Cymodocea serrulata, Syringodium isoetifolium, Enhalus acoroides and Halophila sp. nov. Our methodology proved cost-effective and the resultant information should be relevant to conservation planners.
Progress Towards the Cooperative Management of Marine Hunting in the Great Barrier Reef
Publisher: Wiley
Date: 02-01-2007
Reduced in‐vitro fertilization of human oocytes from patients with raised basal luteinizing hormone levels during the follicular phase
Publisher: Wiley
Date: 04-1985
DOI: 10.1111/J.1471-0528.1985.TB01113.X
Abstract: A series of 62 women were managed in the University of Western Australia/PIVET Laboratory in-vitro fertilization programme. In 60 of them follicle growth was stimulated with clomiphene citrate with or without additional human menopausal gonadotrophin (hMG) and in two with hMG alone. Follicles were aspirated at laparoscopy following an hCG trigger injection and occasionally following a spontaneous luteinizing hormone (LH) surge. Oocytes were inseminated with 0.5 X 10(5)-10(5) sperm/ml 3-6 h later. A significant reduction (P less than 0.001) in the fertilization rate of mature oocytes was observed in those patients whose basal serum LH values were greater than 1 SD above the mean. Fifty-nine women subsequently had embryo transfer and of 10 clinical pregnancies, none occurred in those with elevated LH values. Reduced fertilization may be a reflection of premature oocyte maturation or ageing. This may have clinical implications in the management of some patients with unexplained infertility.
ohn E. Reynolds III1,3,*, Helene Marsh2, Timothy J. Ragen3
Publisher: Inter-Research Science Center
Date: 13-03-2009
DOI: 10.3354/ESR00179
Temporal variability in the life history and reproductive biology of female dugongs in Torres Strait: The likely role of sea grass dieback
Publisher: Elsevier BV
Date: 09-2008
Is acoustic tracking appropriate for air-breathing marine animals? Dugongs as a case study
Publisher: Elsevier BV
Date: 03-2015
Near-Infrared Reflectance Spectroscopy is a Rapid, Cost-Effective Predictor of Seagrass Nutrients
Publisher: Springer Science and Business Media LLC
Date: 23-05-2006
DOI: 10.1007/S10886-006-9088-X
Abstract: Near-infrared reflectance spectroscopy was used to analyze nutrient composition of tropical and subtropical seagrasses in Queensland, Australia, as part of a broader study of impacts of grazing by dugongs on seagrass. Seagrass s les of 10 species were collected, transported to the laboratory, and separated into leaf and root/rhizome fractions. They were dried, ground, and near-infrared spectra (400-2500 nm) were collected. We used partial least-squares regression to develop calibration equations relating spectral data to standard compositional analyses performed in the laboratory. These compositional analyses focused on attributes believed to be important determinants of nutritional quality of marine vertebrate herbivores (nitrogen, organic matter, neutral detergent fiber, acid detergent fiber, lignin, neutral starch, water-soluble carbohydrates, and in vitro dry matter digestibility). Calibration equations for each attribute were developed separately for (1) roots/rhizomes and (2) leaves, irrespective of plant species. An equation that combined both plant parts was equally robust. These studies demonstrated the utility of near-infrared spectroscopy in providing rapid and cost-effective analysis of marine plants, which, in turn, permits a rigorous statistical approach to be applied to studies of foraging by marine herbivores.
Temporal changes in the abundance of some tropical intertidal seagrasses in North Queensland
Publisher: Elsevier BV
Date: 03-1995
Importance of canopy connectivity for home range and movements of the rainforest arboreal ringtail possum (Hemibelideus lemuroides)
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/WR06114
Abstract: Roads and powerline corridors destroy canopy connectivity in the rainforest of north-east Australia. We tested the hypotheses that linear barriers affect (a) the alignment of home ranges, (b) use of habitat either side of linear barriers, and (c) the crossing of them by the strictly arboreal lemuroid ringtail possum (Hemibelideus lemuroides), which is known to be vulnerable to habitat fragmentation. Radio-tracking and a translocation experiment were conducted at a narrow 7-m-wide road and an 80-m-wide powerline. Homes ranges of lemuroid ringtails ranged from 0.15 to 1.67 ha (minimum convex polygon) and were aligned with the road but not powerline corridors. When lemuroid ringtails were experimentally translocated, wider canopy clearings over roads reduced their capacity to return to their original home range, and the powerline corridor was a nearly insurmountable barrier. No possums were observed crossing roads or the powerline corridor at ground level or residing in the intervening matrix, indicating that loss of canopy connectivity has a negative impact on their movements.
Distribution and abundance of the dugong in New Caledonia, southwest Pacific
Publisher: Wiley
Date: 07-12-2007
Population sizes, site fidelity and residence patterns of Australian snubfin and Indo-Pacific humpback dolphins: Implications for conservation
Publisher: Elsevier BV
Date: 04-2006
Moreton Bay, Queensland, Australia: An example of the co-existence of significant marine mammal populations and large-scale coastal development
Publisher: Elsevier BV
Date: 04-2005
Can dugongs survive in Palau?
Publisher: Elsevier BV
Date: 1995
Conserving Dolphins in the Mekong River
Publisher: Elsevier
Date: 2009
Spatial mismatch between marine protected areas and dugongs in New Caledonia
Publisher: Elsevier BV
Date: 04-2015
Using canopy bridges to link habitat for arboreal mammals: successful trials in the Wet Tropics of Queensland
Publisher: CSIRO Publishing
Date: 2011
DOI: 10.1071/AM11003
Abstract: We investigated the use of inexpensive aerial bridges (rope canopy bridges) above roads and a highway by arboreal mammals in the Wet Tropics of Queensland, Australia. Three rope bridge designs were trialed, including a single rope, ladder-like bridges and tunnel-shaped bridges. Nine mammal species were recorded using canopy bridges, including five species or subspecies endemic to the Wet Tropics and three species listed as rare under State nature conservation legislation. Most of these species suffer severely from either the fragmentation or mortality impacts caused by roads. Over 50 crossings above a 15-m-wide tourist road were observed on an elevated ladder-like bridge. Longer (~40 m) rope bridges were used on several occasions by four species. Our observations suggest that canopy bridges can assist rare arboreal mammals to cross roads in the Wet Tropics, thereby reducing both the risk of road-kill and the potential for subpopulation isolation. Further research is required to ascertain the level of benefit afforded by canopy bridges for arboreal mammal populations. It is likely that rope canopy bridges will have broad application for a range of arboreal mammal species.
Re-evaluation of the sustainability of a marine mammal harvest by indigenous people using several lines of evidence
Publisher: Elsevier BV
Date: 12-2015
Response of dugongs to boat traffic: The risk of disturbance and displacement
Publisher: Elsevier BV
Date: 2007
Effects of Tidal and Diel Cycles on Dugong Habitat Use
Publisher: Wiley
Date: 2009
DOI: 10.2193/2007-468
Cryptic marine barriers to gene flow in a vulnerable coastal species, the dugong (Dugong dugon)
Publisher: Wiley
Date: 05-04-2023
DOI: 10.1111/MMS.13021
Abstract: Despite the lack of obvious physical barriers and their ability to travel significant distances, many marine mammals exhibit substantial population structuring over relatively short geographical distances. The dugong ( Dugong dugon ), the only extant representative of family Dugongidae, is listed as Vulnerable to Extinction globally. We investigated the genetic population structure of dugongs in the shallow coastal waters along ,000 km of the eastern Queensland coast, including the Great Barrier Reef region. Microsatellite genotypes for 22 loci in 293 dugongs, SNP genotypes based on 10,690 loci in 43 dugongs, and 410 bp mitochondrial control‐region sequences from 639 dugongs were analyzed. Clustering analysis techniques consistently identified an abrupt genetic break in the Whitsunday Islands region (20.3°S), which interrupts an overall pattern of isolation‐by‐distance. Geographic distance was relatively more important than sea‐surface temperature and seagrass distribution in explaining pairwise microsatellite genetic distances. The cause of reduced dispersal across this region is unknown but might relate to an unusual tidal and current mix, termed the “sticky‐water” effect, and/or a break in the geographical distribution of off‐shore seagrass meadows. The genetic structure suggests distinct breeding units north and south of the Whitsunday Islands region for consideration in further developing management plans for Queensland dugongs.
Bias in manta tow surveys of Acanthaster planci
Publisher: Springer Science and Business Media LLC
Date: 12-1990
DOI: 10.1007/BF00258228
Transformation of soft coral (Coelenterata: Octocorallia) terpenes by Ovula ovum (Mollusca: Prosobranchia)
Publisher: Springer Science and Business Media LLC
Date: 1983
DOI: 10.1007/BF00394272
Movement heterogeneity of dugongs, Dugong dugon (Müller), over large spatial scales
Publisher: Elsevier BV
Date: 06-2006
A process to design a network of marine no-take areas: Lessons from the Great Barrier Reef
Publisher: Elsevier BV
Date: 08-2009
Likely future extirpation of another Asian river dolphin: The critically endangered population of the Irrawaddy dolphin in the Mekong River is small and declining
Publisher: Wiley
Date: 18-10-2012
Selectivity in vector management: an investigation of the effectiveness of measures used to prevent transport of non-indigenous species
Publisher: Springer Science and Business Media LLC
Date: 05-2005
Ecological correlates of folivore abundance in north Queensland rainforests
Publisher: CSIRO Publishing
Date: 2001
DOI: 10.1071/WR99098
Abstract: The ecological factors controlling the distribution and abundance of the folivorous marsupials endemic to the rainforests of northern Australia are not understood. In this study, we surveyed folivore abundance at 40 sites stratified by altitude and geology in rainforests of the Atherton Tableland, north Queensland. All five species of folivore that inhabit the study area were more abundant in highland (800–1200 m) than in upland (400–800 m) forests. Allowing for the effects of altitude, four species of folivore were more abundant in forests on nutrient-rich basalts than in forests on nutrient-poor acid igneous or metamorphic rocks. The abundance of two folivore species also varied inversely with rainfall. Altitudinal variation in folivore abundance in the study area has been attributed to habitat destruction, Aboriginal hunting, the distribution of host plants and climate however, none of these hypotheses has been tested. Variation in folivore abundance with geology is plausibly explained as a response to the nutritional quality of foliage. Foliage quality may also explain the inverse relationship between two of the folivores and rainfall. The results of this study show that only a relatively small proportion of north Queensland rainforests support abundant populations of the endemic folivorous marsupials.
Exploring discourses in environmental decision making: An indigenous hunting case study
Publisher: Informa UK Limited
Date: 16-03-2010
Dugong habitat use in relation to seagrass nutrients, tides, and diel cycles
Publisher: Wiley
Date: 26-05-2010
Local processes strongly influence post-bleaching benthic recovery in the Lakshadweep Islands
Publisher: Springer Science and Business Media LLC
Date: 05-07-2006
Probable susceptibility of dugongs to capture stress
Publisher: Elsevier BV
Date: 1983
Climate and maternal effects modify sex ratios in a weakly dimorphic marsupial
Publisher: Springer Science and Business Media LLC
Date: 04-09-2009
Informing species conservation at multiple scales using data collected for marine mammal stock assessments
Publisher: Public Library of Science (PLoS)
Date: 28-03-2011
Abundance estimates of Irrawaddy dolphins in Chilika Lagoon, India, using photo‐identification based mark‐recapture methods
Publisher: Wiley
Date: 02-05-2011
Knowledge exchange and policy influence in a marine resource governance network
Publisher: Elsevier BV
Date: 02-2012
Physiology of the dugong
Publisher: Elsevier BV
Date: 1978
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