A5046361133- Turtle Biology and Conservation
- Marine and fisheries research
- Avian ecology and behavior
- Fish Ecology and Management Studies
- Ichthyology and Marine Biology
- Marine animal studies overview
- Amphibian and Reptile Biology
- Coral and Marine Ecosystems Studies
- Wildlife Ecology and Conservation
- Marine Bivalve and Aquaculture Studies
- Bird parasitology and diseases
- Water Quality and Pollution Assessment
- Physiological and biochemical adaptations
- Survey Sampling and Estimation Techniques
- Fish Biology and Ecology Studies
- Water resources management and optimization
- Heavy metals in environment
- Animal Behavior and Reproduction
- Rabies epidemiology and control
- Ocean Acidification Effects and Responses
- Economic and Environmental Valuation
- Paleontology and Evolutionary Biology
- Knee injuries and reconstruction techniques
- Underwater Acoustics Research
- Veterinary Oncology Research
Services Australia
2019-2024
The University of Queensland
2015-2024
Metabolic Modeling Services (New Zealand)
2012-2015
Ecological Consulting (Czechia)
2012
International Union for Conservation of Nature (United States)
2010-2011
Queensland Department of Environment and Science
2000
Whaleman Foundation
1999
Environmental Protection Agency
1999
Parks and Wildlife Service
1984-1985
National Parks and Wildlife Service
1984-1985
Background Resolving threats to widely distributed marine megafauna requires definition of the geographic distributions both as well population unit(s) interest. In turn, because individual can operate on varying spatial scales, their impacts affect different segments a same species. Therefore, integration multiple tools and techniques — including site-based monitoring, genetic analyses, mark-recapture studies telemetry facilitate robust definitions at biological scales address management...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 11:245-269 (2010) - DOI: https://doi.org/10.3354/esr00279 Global research priorities for sea turtles: informing management and conservation in 21st century M. Hamann1, H. Godfrey2, J. A. Seminoff3, K. Arthur4, P. C. R. Barata5, Bjorndal6, B. Bolten6, Broderick7, L. Campbell8, Carreras9, Casale10, Chaloupka11, S. F....
Where conservation resources are limited and targets diverse, robust yet flexible priority-setting frameworks vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial temporal scales. Marine turtles widely distributed exhibit intra-specific variations in population sizes trends, as well reproduction morphology. However, current global extinction risk assessment do not assess...
Abstract Derelict abandoned, lost and discarded fishing gear have profound adverse effects. We assessed gear-specific relative risks from derelict to rank-order methods based on: production rates, quantity indicators of catch weight grounds area, consequences gear. The latter accounted for ghost fishing, transfer microplastics toxins into food webs, spread invasive alien species harmful microalgae, habitat degradation, obstruction navigation in-use gear, coastal socioeconomic impacts....
The green turtle, Chelonia mydas, is a circumglobal species and primary herbivore in marine ecosystems. Overexploitation as food resource for human populations has resulted drastic declines or extinction of turtle the Greater Caribbean. Attempts to manage remaining on sustainable basis are hampered by insufficient knowledge demographic parameters. In particular, compensatory responses resulting from density-dependent effects have not been evaluated any sea population thus explicitly included...
ABSTRACT Aim To critically review the status of green sea turtle ( Chelonia mydas ) using best available scientific studies as there is a prevailing view that this species globally endangered and its marine ecosystem functions compromised. Location Ogasawara (Japan), Hawaii (USA), Great Barrier Reef (Australia), Florida Tortuguero (Costa Rica). Methods We compiled seasonal nesting activity data from all reliable continuous long‐term (> 25 years), which comprised series for six world's...
Abstract There is growing evidence that small‐scale, coastal, passive net fisheries may be the largest single threat to some sea turtle populations. We review assessments of interactions in these fisheries, and experiments on gear‐technology approaches (modifying gear designs, materials fishing methods) mitigate by‐catch, available from a small number studies fisheries. Additional are needed improve limited understanding relative degree risk coastal pose populations, prioritize conservation...
Abstract Somatic growth dynamics are an integrated response to environmental conditions. Hawksbill sea turtles ( Eretmochelys imbricata ) long‐lived, major consumers in coral reef habitats that move over broad geographic areas (hundreds thousands of kilometers). We evaluated spatio‐temporal effects on hawksbill a 33‐yr period and 24 study sites throughout the West Atlantic explored relationships between climate indices. compiled largest ever data set somatic rates for hawksbills – 3541...
Abstract Discarding by fisheries is one of the most wasteful human marine activities, yet we have few estimates its scale. Reliable global discards are essential for sustainable management. Using United Nations Food and Agriculture Organization databases on country-specific landings, estimated discard rate magnitude estuarine capture using fishery-specific rates derived from direct observations gear-specific within a Bayesian modelling framework. An 9.1 million tonnes discarded annually (95%...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 149:23-34 (1997) - doi:10.3354/meps149023 Nonparametric regression modelling of green sea turtle growth rates (southern Great Barrier Reef) Limpus C, Chaloupka M Somatic recorded between 1974 and 1991 for turtles Chelonia mydas resident in southern Reef (sGBR) foraging grounds sGBR genetic stock were modelled...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 3:133-143 (2007) - doi:10.3354/esr003133 Conservation status of loggerhead sea turtle in Brazil: an encouraging outlook Maria Ângela Marcovaldi1, Milani Chaloupka2,* 1Projeto TAMAR-IBAMA, Fundação Pró-TAMAR, Caixa Postal 2219, Salvador, Bahia, 40210-970, Brazil 2Ecological Modelling Services Pty Ltd, PO Box 6150,...
Abstract Somatic growth is an integrated, individual‐based response to environmental conditions, especially in ectotherms. Growth dynamics of large, mobile animals are particularly useful as bio‐indicators change at regional scales. We assembled rate data from throughout the West Atlantic for green turtles, Chelonia mydas , which long‐lived, highly migratory, primarily herbivorous mega‐consumers that may migrate over hundreds thousands kilometers. Our dataset, largest ever compiled sea has...
From June 1995 to August 2002 we assessed green turtle ( Chelonia mydas ) population structure and survival, identified human impacts at Bahía de los Angeles, a large bay that was once the site of greatest sea harvest rates in Gulf California, Mexico. Turtles were captured live with entanglement nets mortality quantified through stranding surveys flipper tag recoveries. A total 14,820 netting hours (617·5 d) resulted 255 captures 200 turtles. Straight-carapace length mass ranged from...
Many long-lived marine species exhibit life history traits that make them more vulnerable to overexploitation. Accurate population trend analysis is essential for development and assessment of management plans these species. However, because many disperse over large geographic areas, have stages inaccessible human surveyors, and/or undergo complex developmental migrations, data on trends in abundance are often available only one stage the population, usually breeding adults. The green turtle...
In the wake of BP oil spill, U.S. agencies need research plans to collect data that will aid in managing and assessing marine species ecosystems.
ABSTRACT Declines in absolute abundance and altered size distributions from size‐selective removals of market species pelagic apex predators tuna fisheries alters evolutionary characteristics populations ecosystem processes stability. Pelagic fishing at seamounts, where hyperstability may occur, can exacerbate declining have high bycatch groups that are highly vulnerable to overexploitation. Generalized additive mixed Poisson regression models (GAMMs) were fitted Hawaii longline fishery...
Abstract Elasmobranch mortality in pelagic longline fisheries poses a risk to some populations, alters the distribution of abundance between sympatric competitors, changing ecosystem structure, processes and stability. Individual synergistic effects on elasmobranch catch survival from gear factors, including methods prescribed mitigate bycatch other vulnerable taxa, were determined. Overall relative higher circle vs. J‐shaped hook shark rates conditioned potentially informative moderators,...