On relationships of some commercial fish species year-class abundance and hydrological conditions in the Northwest Atlantic
Year-class abundance variations of silver hake, cod, pollock, haddock, herring and capelin in several areas of the Northwest Atlantic were studied in relation to interannual water temperature variability during 1977–91. The relationships are discussed based on the hypothesis that different hydrologi...
| Main Authors: | , |
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| Format: | Text |
| Language: | English |
| Published: |
1996
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.578.3339 http://archive.nafo.int/open/studies/s24/sigaev.pdf |
| Summary: | Year-class abundance variations of silver hake, cod, pollock, haddock, herring and capelin in several areas of the Northwest Atlantic were studied in relation to interannual water temperature variability during 1977–91. The relationships are discussed based on the hypothesis that different hydrological structures of oceanographic conditions impact the abundance of fish year-classes. Qualitative, direct and inverse relationships were revealed to suggest that the year-class abundance of warm-water fish species is more related to the warm water advection on the shelf, than to the cold water structures. Conversely, the year-class abundance of the cold-water fish species was related to the cold water advection from the major water currents in the areas. |
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