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| Shin, Yunne-jai; Rochet, Marie-joelle; Jennings, Simon; Field, John; Gislason, Henrik. |
| The usefulness and relevance of size-based indicators (SBIs) to an ecosystem approach to fisheries (EAF) are assessed through a review of empirical and modelling studies. SBIs are tabulated along with their definitions, data requirements, potential biases, availability of time-series, and expected directions of change in response to fishing pressure. They include mean length in a population, mean length in a community, mean maximum length in a community, and the slope and intercept of size spectra. Most SBIs can be derived from fairly standard survey data on length frequencies, without the need for elaborate models. Possible fishing- and environment-induced effects are analysed to distinguish between the two causes, and hypothetical cases of reference... |
| Tipo: Text |
Palavras-chave: Size spectrum; Size based indicators; Ecosystem approach to fisheries. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-775.pdf |
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