کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5052440 | 1371161 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fishing down the value chain: Biodiversity and access regimes in freshwater fisheries - the case of Malawi
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
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چکیده انگلیسی
This paper considers the connection between the diversity of catch in a multi-species fishery and the productivity of the fishery under different access regimes. A modified Gordon-Schaefer model is used to analyse the importance of the level of diversity in a fishery in open access and profit maximising regimes. The modified model, which includes both environmental and bioeconomic variables, is fitted to data from a gillnet fishery in Lake Malawi. Pressure on stocks is shown to be greater at all levels of biodiversity in open access than it is in profit maximising regimes. However, in a profit maximising regime both catch and the productivity of fishing effort is highest when there is a single marketed species. By contrast, in an open access regime catches are maximised at higher levels of bioeconomic diversity than in profit maximising regimes. Implications for policy are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Economics - Volume 59, Issue 1, 5 August 2006, Pages 106-114
Journal: Ecological Economics - Volume 59, Issue 1, 5 August 2006, Pages 106-114
نویسندگان
Victor Kasulo, Charles Perrings,