Attempt at modelling the production of freshwater fishes of the Vistula Lagoon taking into account trophic relations
1998
Horbowy, J. (Sea Fisheries Institute, Gdynia (Poland))
A multispecies stock-production model is used to describe the dynamics of fish resources in the Vistula Lagoon (Poland) in 1976-95. The biomass of pikeperch, bream, perch and roach amounted in 1995 to 1200-1700 t, 3800-2400 t, 50-90 t and 240-600 t, respectively, depending on the assumptions adopted in the model. The biomass of pikeperch, bream and perch decreased about twofold, and the biomass of roach decreased by about 15 percentage (in relation to the values in 1976)
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书目信息
期
1
ISSN
1505-4667
页码
pp. 165-182
其它主题
Modele mathematique; Modelos matematicos; Peche lagunaire; Peche multiespece; Donnee sur les peches
语言
英语
注释
Summaries (En, Pl)
4 fig., 5 tables; 12 ref.
类型
Summary
1999-08-15
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