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79 results for “fisheries management”
Using seabird and whale distribution models to estimate spatial consumption of krill to inform fishery management
<p>Ecosystem dynamics at the north-west Antarctic Peninsula are driven by interactions between physical and biological processes. For example, baleen whale populations are recovering from commercial harvesting against the backdrop of rapid climate change, including reduced sea-ice extent and changing ecosystem composition. Concurrently, the commercial harvesting of Antarctic krill is increasing, with the potential to increase the likelihood for competition with and between krill predators and the fishery. However, understanding the ecology, abundance, and spatial distribution of krill predators is often limited, outdated, or at spatial scales that do not match those desired for effective fisheries management. We update current knowledge of predator dependence on krill by integrating telemetry-based data, at-sea observational surveys, estimates of predator abundance, and physiological data to estimate the spatial distribution of krill consumption during the austral summer by three species of Pygoscelis penguin, 11 species of flying seabirds, one species of pinniped and two species of baleen whale. Our models show that the majority of important areas for krill-predator foraging are close to penguin breeding colonies in nearshore areas where humpback whales also regularly feed, and along the shelf-break, though we caution that not all known krill predators are included in these analyses. We show that krill consumption is highly variable across the region, and often concentrated at fine spatial scales, emphasising the need for management of the local krill fishery at relevant temporal and spatial scales. We also note that krill consumption by recovering populations of krill predators provides further evidence in support of the krill surplus hypothesis, and highlight that despite less than comprehensive data, cetaceans are likely to consume a significant proportion of the krill consumed by natural predators but are not currently considered directly in the management of the krill fishery. If management of the krill fishery is to be precautionary and operate in a way that minimises the risks to krill predator populations, it will be necessary in future analyses, to include up-to-date and precise abundance and consumption estimates for pack-ice seals, finfish, squid, and other baleen whale species not currently considered.</p>
Impact of Invasive Species & Ecosystem-Based Fisheries Management
<p>During the Sabai Webinar Series 14, hosted by the Shwetaungthagathu Reform Initiative Centre (SRIc), Burmese Experts, including Mr Phoe Cho, Fisheries Specialist, Mr Thadoe Wai, Local Freshwater Ecologist and Mr Tin Shine Aung: Sustainability Consultant and Researcher engaged in a discussion on <br>ecological impact of invasive fish species in Myanmar. </p> <p>They highlighted the consequences of introducing invasive fish species into natural water sources, such as rivers, streams, & seas and why ecosystem-based fisheries management is important. </p> <p>This Sabai Webinar Series was conducted under the Edu4SD project.</p> <p> </p>
Data from: Detection of outlier loci and their utility for fisheries management
Genetics-based approaches have informed fisheries management for decades, yet remain challenging to implement within systems involving recently diverged stocks or where gene flow persists. In such cases, genetic markers exhibiting locus-specific ("outlier") effects associated with divergent selection may provide promising alternatives to loci that reflect genome-wide ("neutral") effects for guiding fisheries management. Okanagan Lake kokanee (Oncorhynchus nerka), a fishery of conservation concern, exhibits two sympatric ecotypes adapted to different reproductive environments, however, previous research demonstrated the limited utility of neutral microsatellites for assigning individuals. Here, we investigated the efficacy of an outlier-based approach to fisheries management by screening >11,000 expressed sequence tags for linked microsatellites and conducting genomic scans for kokanee sampled across seven spawning sites. We identified eight outliers among 52 polymorphic loci that detected ecotype-level divergence, whereas there was no evidence of divergence at neutral loci. Outlier loci exhibited the highest self-assignment accuracy to ecotype (92.1%), substantially outperforming 44 neutral loci (71.8%). Results were robust among-sampling years, with assignment and mixed composition estimates for individuals sampled in 2010 mirroring baseline results. Overall, outlier loci constitute promising alternatives for informing fisheries management involving recently diverged stocks, with potential applications for designating management units across a broad range of taxa.
Data from: Evaluating tools for the spatial management of fisheries
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What can be learned from fishers’ perceptions for fishery management planning? Case study insights from Sainte-Marie, Madagascar
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Data from: Assessing reproductive behavior important to fisheries management: a case study with red drum, Sciaenops ocellatus
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Data from: Rigorous monitoring of a large-scale marine stock enhancement program demonstrates the need for comprehensive management of fisheries and nursery habitat
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Using seabird and whale distribution models to estimate spatial consumption of krill to inform fishery management
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Data from: Detection of outlier loci and their utility for fisheries management
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Data from: Quantifying relative fish abundance with eDNA: a promising tool for fisheries management
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Data from: A parallel population genomic and hydrodynamic approach to fishery management of highly-dispersive marine invertebrates: the case of the Fijian black-lip pearl oyster Pinctada margaritifera
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Data from: Genetic stock structure of Anadromous Arctic char in Canada’s Central Arctic: potential implications for the management of Canada’s largest Arctic char commercial fishery
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Data from: Kokanee–sockeye salmon hybridization leads to intermediate morphology and resident life history: implications for fisheries management
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Data from: Genotyping-in-Thousands by sequencing panel development and application to inform kokanee salmon (Oncorhynchus nerka) fisheries management at multiple scales
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Data from: Molecular genetics to inform spatial management in benthic invertebrate fisheries: a case study using the Australian greenlip abalone
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Data from: Evaluating conservation and fisheries management strategies by linking spatial prioritisation software and ecosystem and fisheries modelling tools
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Data from: Short-term impacts and value of a periodic no take zone (NTZ) in a community-managed small-scale lobster fishery, Madagascar
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Data from: Spatial variability in size at maturity of golden king crab (Lithodes aequispinus) and implications for fisheries management
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Data from: Parallel evolution and adaptation to environmental factors in a marine flatfish: implications for fisheries and aquaculture management of the turbot (Scophthalmus maximus)
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Data from: Population genomics and history of speciation reveal fishery management gaps in two related redfish species (Sebastes mentella and Sebastes fasciatus)
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.