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Marine ecosystem management: Fish abundance and size under exploitation
Authors:Joe Horwood
Institution:The Centre for Environment, Fisheries & Aquaculture Science (CEFAS), Pakefield Road, Lowestoft, Suffolk, NR330HT UK
Abstract:This study is targeted on policy makers and environmental scientists to illustrate the typical historical scale of depletion of our fish stocks, and what current and emerging legislation might mean for fisheries management and the metrics of fish stocks. The population demography of the Bristol Channel sole is described since 1820. Their decline in abundance, and change in length compositions, are modelled. By 2000, the mature stock had been depleted to less than 5% of its original size, and larger sole were rarely caught. The implications of maximum sustainable yield targets, and of good environmental status, are examined.
Keywords:Bristol Channel  Sole  Population dynamics  Fisheries  MSY  Good environmental status
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