| SS8.03 Operational Fisheries Oceanography |
| Gertseva, V, V, Oregon State University, Newport, USA, vladlena.gertseva@oregonstate.edu |
| Wainwright, T, C, NOAA Fisheries, Newport, USA, thomas.wainwright@noaa.gov |
| Gertsev, V, I, Rybinsk State Academy of Technology, Rybinsk, Russian Federation, hertz@yaroslavl.ru |
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| MATHEMATICAL MODEL OF JUVENILE SALMON SURVIVAL IN COASTAL WATERS OFF OREGON |
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| During the last thirty years, most salmonid populations of the Northeast Pacific ocean have exhibited general declines in the area off Washington, Oregon and California. One of the hypotheses proposed to explain this decline is that poor survival of salmon populations is caused by the poor survival of juvenile salmon in the coastal waters during the time period shortly after ocean entry. Based on the studying the trophic relationships of juvenile salmon, we developed a mathematical model of the juvenile salmon survival in the coastal water off Oregon. Our model reflects the most important links between the juvenile salmon and their environment, enabling insight into relationships in a nearshore oceanic ecosystem. This knowledge provides a theoretical basis for a better understanding of the natural mechanisms controlling juvenile salmon survival. This enables prediction of different scenarios, within the dynamics of juvenile salmon populations. |
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