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Aquaculture and Fisheries

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Full-Text Articles in Aquaculture and Fisheries

Does The Seal Licensing System In Scotland Have A Negative Impact On Seal Welfare?, Laetitia Nunny, Fritha Langford, Mark P. Simmonds Aug 2016

Does The Seal Licensing System In Scotland Have A Negative Impact On Seal Welfare?, Laetitia Nunny, Fritha Langford, Mark P. Simmonds

Aquaculture and Fisheries

This study examined the licensing system that permits seal shooting in Scotland, which was established under Part 6 Conservation of Seals of the Marine (Scotland) Act 2010. Four approaches were used: data were collated and analyzed from both the Scottish Government and Scottish Marine Animal Stranding Scheme; a survey was sent to current license holders and informal interviews were conducted with key stakeholder types. Between February 2011 and the end of October 2015, 1229 gray seals, and 275 common seals were reported shot under license to the Scottish Government. The numbers of seals reported as shot has reduced year-on-year since ...


Using Grizzly Bears To Assess Harvest-Ecosystem Tradeoffs In Salmon Fisheries, Taal Levi, Chris T. Darimont, Misty Macduffee, Marc Mangel, Paul C. Paquet, Christopher C. Wilmers Apr 2012

Using Grizzly Bears To Assess Harvest-Ecosystem Tradeoffs In Salmon Fisheries, Taal Levi, Chris T. Darimont, Misty Macduffee, Marc Mangel, Paul C. Paquet, Christopher C. Wilmers

Aquaculture and Fisheries

Implementation of ecosystem-based fisheries management (EBFM) requires a clear conceptual and quantitative framework for assessing how different harvest options can modify benefits to ecosystem and human beneficiaries. We address this social-ecological need for Pacific salmon fisheries, which are economically valuable but intercept much of the annual pulse of nutrient subsidies that salmon provide to terrestrial and aquatic food webs. We used grizzly bears, vectors of salmon nutrients and animals with densities strongly coupled to salmon abundance, as surrogates for ‘‘salmon ecosystem’’ function. Combining salmon biomass and stock-recruitment data with stable isotope analysis, we assess potential tradeoffs between fishery yields and ...