Trophic and life history considerations with respect to multispecies management policies
As fisheries become more heavily exploited, the need for multispecies management has become more apparent and trophic relationships are cited as the primary cause for this need for multispecies management. This thesis investigates one aspect of the impact of trophic relationships on multispecies management; indirect effects on food chains by predators. The approach chosen to investigate the impact of trophic relationships on multispecies harvesting is a simulation one. Although the results of a simulation approach are not as powerful as those from an experimental study, the practicality in terms of testing alternative management plans is much higher. The model is of the Catalina nearshore benthic fish community. The choice is a practical one. The feeding habitats of the Catalina nearshore benthic fishes have been studied extensively and a data base of this quality and breadth is necessary for the parameter estimation for this modeling effort. This thesis is divided into four parts: 1) the analysis of feeding selectivity, 2) a review of feeding of benthic fishes at Catalina Island, 3) the modeling effort itself, 4) a review of population parameters and life history patterns of marine fishes.
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| Format: | thesis biblioteca |
| Language: | English |
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University of California, Davis, Ecology
1988
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| Subjects: | Ecology, Fisheries, Management, |
| Online Access: | http://hdl.handle.net/1834/36368 |
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