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Titolo:
Approximate estimate of the maximum sustainable yield from catch data without detailed effort information: application to tuna fisheries
Autore:
Gaertner, D; Fonteneau, A; Laloe, F;
Indirizzi:
IRD, Lab Halieut & Ecosyst Aquat, F-34032 Montpellier, France IRD Montpellier France F-34032 cosyst Aquat, F-34032 Montpellier, France
Titolo Testata:
AQUATIC LIVING RESOURCES
fascicolo: 1, volume: 14, anno: 2001,
pagine: 1 - 9
SICI:
0990-7440(200101/02)14:1<1:AEOTMS>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
STOCK ASSESSMENT; MODEL;
Keywords:
stock assessment; precautionary approach; fishery indicator; tuna fishery; skipjack; yellowfin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Gaertner, D IRD, Lab Halieut & Ecosyst Aquat, BP 5045, F-34032 Montpellier, France IRD BP 5045 Montpellier France F-34032 32 Montpellier, France
Citazione:
D. Gaertner et al., "Approximate estimate of the maximum sustainable yield from catch data without detailed effort information: application to tuna fisheries", AQU LIV RES, 14(1), 2001, pp. 1-9

Abstract

Even when fishing effort data are not available in a developing fishery, it is often still possible to develop a simple fishery indicator to obtain information about the status of the stock. Using catch data only, Grainger and Garcia, (FAO Fish. Tech. Pap. 359, 1996) showed that the changes over time in the relative rate of catch increase (RRCI) can be used to detect whena stock reaches its over-fishing level, i.e., the year when RRCI falls to zero. The method presupposes that fishing effort increased steadily over the period concerned. We propose a generalization of this method that consists in obtaining a crude estimate of the maximum sustainable yield (MSY) by plotting the trend in catches against the smoothed RRCI. The yellowfin tuna (Thunnus albacares) fishery in the Eastern Atlantic was used to show the strong relationship between MSY estimates obtained from standard equilibrium production models and from this method. Given that it is very difficult to estimate effective fishing effort for skipjack tuna (Katsuwonus pelamis), we show how this simple fishery indicator can be used to obtain proxies of MSY for skipjack fisheries located in the Eastern Atlantic Ocean and in the Indian Ocean. (C) 2001 Ifremer/CNRS/Inra/IRD/Cemagref/Editions scientifiques et medicales Elsevier SAS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/21 alle ore 02:56:44