We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Catch per Unit Effort and yields as indicators of exploited fish communities: application to two West African reservoirs.
- Authors
Kantoussan, Justin; Ecoutin, Jean M.; Fontenelle, Guy; Morais, Luis Tito; Laë, Raymond
- Abstract
Two indicators of fish exploitation, catch per unit effort ( CPUE) and yield per unit area, were used with surveys of small-scale fishery landings to compare two African reservoirs that differ in their level of fish exploitation, being high for Selingue Reservoir and low for Manantali Reservoir, both located in West Africa. The heavy exploitation in Selingue Reservoir induced a decline in catches per fishing trip (9.5 kg trip−1), whereas the catch remained high at Manantali Reservoir (17.0 kg trip−1). Moreover, the annual fish yield per unit area was lower for Manantali Reservoir (19 kg ha−1) than for Selingue Reservoir (79 kg ha−1). There was no relationship between the Morphoedaphic Index and catches for the two reservoirs. Rather, only the fishing effort and annual water-level variations defined the reservoir fish yields. Based on the results of the present study, it appears that CPUE and fish yield per unit area represent simple and robust indicators for describing the impacts of fishing intensity in aquatic ecosystems.
- Subjects
WEST Africa; CATCH effort in fishing; RESERVOIRS &; the environment; SELINGUE Dam (Mali); MANANTALI Dam (Mali)
- Publication
Lakes & Reservoirs: Research & Management, 2014, Vol 19, Issue 2, p86
- ISSN
1320-5331
- Publication type
Article
- DOI
10.1111/lre.12061