Elasmobranch Fisheries Management Techniques 2004
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چکیده
منابع مشابه
Predictive habitat suitability models to aid conservation of elasmobranch diversity in the central Mediterranean Sea
Commercial fisheries have dramatically impacted elasmobranch populations worldwide. With high capture and bycatch rates, the abundance of many species is rapidly declining and around a quarter of the world's sharks and rays are threatened with extinction. At a regional scale this negative trend has also been evidenced in the central Mediterranean Sea, where bottom-trawl fisheries have affected ...
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Small-scale and artisanal fisheries for sharks exist in most inshore, tropical regions of the world. Although often important in terms of food security, their low value and inherent complexity provides an imposing hurdle to sustainable management. An observer survey of a small-scale commercial gill-net fishery operating within the Great Barrier Reef World Heritage area revealed at least 38 spec...
متن کاملEcological risk assessment and its application to elasmobranch conservation and management.
Ecological risk assessments (ERAs) are employed to quantify and predict the vulnerability of a particular species, stock or population to a specific stressor, e.g. pollution, harvesting, climate change, by-catch. Data generated from ERAs are used to identify and prioritize species for implementation of effective conservation and management strategies. At this time, ERAs are of particular import...
متن کاملThe Role of Elasmobranchs in the Cantabrian Sea Shelf Ecosystem and Impact of the Fisheries on Them
Elasmobranchs apparently play an ecological role of relevance in the demersal community of the Cantabrian Sea. Using biomass indices obtained from bottom trawl surveys the most significant elasmobranch species in the continental shelf ecosystem are described. By combining their spatial distribution with multivariate analysis, including other fish species, it is possible to place them within the...
متن کاملLinking sensory biology and fisheries bycatch reduction in elasmobranch fishes: a review with new directions for research
Incidental capture, or bycatch, in fisheries represents a substantial threat to the sustainability of elasmobranch populations worldwide. Consequently, researchers are increasingly investigating elasmobranch bycatch reduction methods, including some focused on these species' sensory capabilities, particularly their electrosensory systems. To guide this research, we review current knowledge of e...
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