Publications by authors named "W Trivelpiece"
Southern Ocean ecosystems are under pressure from resource exploitation and climate change. Mitigation requires the identification and protection of Areas of Ecological Significance (AESs), which have so far not been determined at the ocean-basin scale. Here, using assemblage-level tracking of marine predators, we identify AESs for this globally important region and assess current threats and protection levels.
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- The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a collaborative project aiming to consolidate tracking data for various Antarctic predators to pinpoint Areas of Ecological Significance.
- This initiative enhances our understanding of ecosystem dynamics in the Southern Ocean and aids in predicting how predator distributions may change in response to climate change.
- The publicly accessible dataset includes information from over 70 contributors, featuring 17 predator species and tracking over 2.9 million locations since the 1990s.
Article Synopsis
- - The study developed a new method to analyze penguin tracking data, aimed at identifying crucial areas for seabird conservation, particularly for marine Important Bird Areas (IBAs) around the Antarctic Peninsula and nearby regions.
- - Key improvements were made to existing protocols by enhancing track interpolation techniques and refining parameters for kernel analysis, applied to tracking data from 24 penguin datasets across various breeding stages.
- - The research identified five new marine IBAs that could support about 600,000 adult penguins, showcasing the effectiveness of this method for creating a protective network for penguins and informing management practices for krill fisheries.
Phenological changes have been observed in a variety of systems over the past century. There is concern that, as a consequence, ecological interactions are becoming increasingly mismatched in time, with negative consequences for ecological function. Significant spatial heterogeneity (inter-site) and temporal variability (inter-annual) can make it difficult to separate intrinsic, extrinsic and stochastic drivers of phenological variability.
View Article and Find Full Text PDFEvidence of climate-change-driven shifts in plant and animal phenology have raised concerns that certain trophic interactions may be increasingly mismatched in time, resulting in declines in reproductive success. Given the constraints imposed by extreme seasonality at high latitudes and the rapid shifts in phenology seen in the Arctic, we would also expect Antarctic species to be highly vulnerable to climate-change-driven phenological mismatches with their environment. However, few studies have assessed the impacts of phenological change in Antarctica.
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