期刊
FISHERIES MANAGEMENT AND ECOLOGY
卷 22, 期 4, 页码 295-306出版社
WILEY
DOI: 10.1111/fme.12126
关键词
Elliott model; population dynamics; predator-prey dynamics; vendace; whitefish morphs; Wisconsin model
类别
资金
- Academy of Finland [1140903]
- County Governor of Finnmark
- European Regional Developmental Fund [A30205]
- Jenny and Antti Wihuri Foundation
- Ministry of Agriculture and Forestry
- Municipality of Inari
- Norwegian Directorate for Nature Management
- Norwegian Institute for Agricultural and Environmental Research
- Norwegian Research Council
- Pasvik Kraft AS
Knowledge of predator-prey dynamics is essential to understand ecosystem functioning. Quantification of such interactions is important for fisheries management, in particular in the case of stocking programmes. Here, food consumption rates (FCR) were quantified for wild and stocked piscivorous brown trout, Salmo trutta L., in three subarctic lakes with contrasting coregonid (Coregonus spp.) prey communities, using the Wisconsin and the Elliott-Hurley bioenergetic models. FCR was highest for stocked brown trout in lakes with the lowest predator densities, and lowest for wild brown trout. Although FCR estimate may vary somewhat depending on the specific model used, such tools are imperative for the proper impact assessment of brown trout stocking programmes and for the provision of advice on optimal stocking densities.
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