A COMPARISON OF THE ECOLOGICAL RISKS FROM FISHERIES AND POLLUTION TO THE NORTH-SEA BIOTA

被引:4
作者
TURKSTRA, E [1 ]
SCHOLTEN, MCT [1 ]
BOWMER, CT [1 ]
SCHOBBEN, HPM [1 ]
机构
[1] TNO,APPL MARINE RES LAB,1780 AB DEN HELDER,NETHERLANDS
关键词
FISHERIES; CONTAMINATION; EUTROPHICATION; ECOLOGICAL RISK; MODELING;
D O I
10.2166/wst.1991.0286
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A prototype of the ecological risk analysis framework REFEREE is used to demonstrate a comparative evaluation of the effects of three main perturbing factors on the functioning of the North Sea ecosystem. Fisheries obviously have a large impact on fish species: some are reduced, others are increased in density. Fisheries also contribute substantially to the decline of mammals, although pollution is the main causative factor in their demise and that of birds. Oddly, some fish species appear to benefit from contamination. Eutrophication causes an increase in crustaceans, polychaetes, coelenterates and meiofauna, and a decrease in echinoderms and molluscs. Sole is one of the few fish species that appears to benefit from eutrophication, the others are suppressed.
引用
收藏
页码:147 / 153
页数:7
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