Seabird diet predicts following-season commercial catch of Gulf of California Pacific Sardine and Northern Anchovy
作者： Enriqueta Velarde , Exequiel Ezcurra , Daniel W. Anderson
DOI: 10.1016/J.JMARSYS.2014.08.014
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摘要: Abstract The highly productive Gulf of California exhibits high biodiversity and an abundance small pelagic, schooling fishes, important both to the ecosystem fisheries. These fishes show wide fluctuations in due oceanographic–atmospheric phenomena such as El Nino-Southern Oscillation, constituting a problem for effective fisheries management. In this work we propose several parameters diet three seabird species useful predictors eventual commercial catch per unit effort (CPUE) Pacific sardine (Sardinops sagax) northern anchovy (Engraulis mordax) Midriff Island Region California. We found that seabirds are sensitive abundances these their proportions becoming suitable future CPUE. precision our prediction is because birds feed on pre-recruit fish, time between sampling diets initiation fishing season short, minimizing stochastic effects recruitment subsequent environmental fluctuations.
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