In this paper, some economic factors, which can be connected into the fisheries models for fishery management are introduced. Consequently, the optimum policies of fishery management are approached.
Surveys since 1959 showed that the dynamic basis of the East China Sea sectional circulation is the nearshore seawater horizontal divergence caused by wind on the surface compensated by Kuroshio subsurface water conve...Surveys since 1959 showed that the dynamic basis of the East China Sea sectional circulation is the nearshore seawater horizontal divergence caused by wind on the surface compensated by Kuroshio subsurface water convergence caused by meridional current in the lower layer.Fish always tend to migrate along certain routes or stay in certain areas favorable for development of eggs, survival of larvae and living of adults. The movement of water masses supplies a very important driving force for marine animals migrating long distance.The lower part of the sectional circulation formed by the subsurface water of Kuroshio is not suitable for the aggregation offish because of its lack of oxygen, and has therefore a driving influence on demersal fishes.This study of the sectional circulation influence on the distributions of some commercially important species in the East China Sea reveals a close relationship between the circulation and the movement of fish schools.The principal factors influencing zonal展开更多
文摘In this paper, some economic factors, which can be connected into the fisheries models for fishery management are introduced. Consequently, the optimum policies of fishery management are approached.
文摘Surveys since 1959 showed that the dynamic basis of the East China Sea sectional circulation is the nearshore seawater horizontal divergence caused by wind on the surface compensated by Kuroshio subsurface water convergence caused by meridional current in the lower layer.Fish always tend to migrate along certain routes or stay in certain areas favorable for development of eggs, survival of larvae and living of adults. The movement of water masses supplies a very important driving force for marine animals migrating long distance.The lower part of the sectional circulation formed by the subsurface water of Kuroshio is not suitable for the aggregation offish because of its lack of oxygen, and has therefore a driving influence on demersal fishes.This study of the sectional circulation influence on the distributions of some commercially important species in the East China Sea reveals a close relationship between the circulation and the movement of fish schools.The principal factors influencing zonal
