Fishing down the value chain: Biodiversity and access regimes in freshwater fisheries—the case of Malawi |
|
|---|---|
| Author | |
| Kasulo, V.; Perrings, C. | |
| Year | |
| 2006 | |
| Secondary Title | |
| Ecological Economics | |
| Volume | |
| 59 | |
| Pages | |
| 106-114 | |
| Abstract | |
| 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 evels 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. | |
| DOI | |
| 10.1016/j.ecolecon.2005.09.029 | |
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