12 hasil untuk "Rob Harcourt"
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Artikel Jurnal Teks lengkap
Gaping in Humpback Whales, A Unique Behavior Documented Through Citizen Science
Humpback whales (Megaptera novaeangliae) are arguably the most frequently observed whale species in the world. Their coastal habits, tolerance of boats, and rapid recovery post-whaling has resulted in this species dominating whale-watching vessel operations and in-water swim-with tourism in all…
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A Comparative Analysis of SVM and IDNN for Identifying Penguin Activities
Where, when and how much animals eat provide valuable insights into their ecology. In this paper, we present a comparative analysis between Support Vector Machine (SVM) and Input Delay Neural Network (IDNN) models to identify prey capture events from penguin accelerometry data. A pre-classified…
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Future Directions in Eubalaena spp.: Comparative Research to Inform Conservation
All three extant right whales [Eubalaena australis (Southern; SRW), glacialis (North Atlantic; NARW), and japonica (North Pacific; NPRW)] were heavily exploited, and the status of the two northern hemisphere species remains precarious. Recently, limited gains made by the NARW have been reversed and…
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Marine predator movements create seascape connectivity in remote coral reef ecosystems
Abstract Background Movement of marine predators can connect different habitats and create links that are key for maintaining metapopulation dynamics, genetic diversity, energy flow and trophic links within and between systems. This key ecological process is known as ecological connectivity…
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Inferring Variation in Southern Elephant Seal At-Sea Mortality by Modelling Tag Failure
Identifying factors influencing survivorship is key to understanding population persistence. Although satellite telemetry is a powerful tool for studying remote animal ecology and behaviour it is rarely used for demographic studies because distinguishing the death of the animal (individual…
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Assessing the potential for resource competition between the Kerguelen Plateau fisheries and southern elephant seals
Indirect ecological interactions such as competition for resources between fisheries and marine predators have often been proposed but can be difficult to demonstrate empirically. The Kerguelen Plateau in the Southern Indian Ocean supports fisheries for both Patagonian toothfish and mackerel…
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Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea
The relative importance of intrinsic and extrinsic determinants of animal foraging is often difficult to quantify. The most southerly breeding mammal, the Weddell seal, remains in the Antarctic pack-ice year-round. We compared Weddell seals tagged at three geographically and hydrographically…
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Overhauling Ocean Spatial Planning to Improve Marine Megafauna Conservation
Tracking data have led to evidence-based conservation of marine megafauna, but a disconnect remains between the many 1000s of individual animals that have been tracked and the use of these data in conservation and management actions. Furthermore, the focus of most conservation efforts is within…
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From little things big things grow: enhancement of an acoustic telemetry network to monitor broad-scale movements of marine species along Australia’s east coast
Abstract Background Acoustic telemetry has become a fundamental tool to monitor the movement of aquatic species. Advances in technology, in particular the development of batteries with lives of > 10 years, have increased our ability to track the long-term movement patterns of many species. However…
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A standardisation framework for bio‐logging data to advance ecological research and conservation
Abstract Bio‐logging data obtained by tagging animals are key to addressing global conservation challenges. However, the many thousands of existing bio‐logging datasets are not easily discoverable, universally comparable, nor readily accessible through existing repositories and across platforms…
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Artikel Jurnal
Animal-Borne Telemetry: An Integral Component of the Ocean Observing Toolkit
Animal telemetry is a powerful tool for observing marine animals and the physical environments that they inhabit, from coastal and continental shelf ecosystems to polar seas and open oceans. Satellite-linked biologgers and networks of acoustic receivers allow animals to be reliably monitored over…