Recruitment variability and oceanographic stability
ABSTRACT We examine the hypothesis that recruitment is more variable in populations on isolated offshore banks than nearby shelf populations. Recruitment of cod ( Gadus morhua ) and American plaice ( Hippoghssoides plates‐soides ) on Flemish Cap is more variable than in any comparable population. Re...
| Published in: | Fisheries Oceanography |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1994
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1365-2419.1994.tb00102.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.1994.tb00102.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.1994.tb00102.x |
| Summary: | ABSTRACT We examine the hypothesis that recruitment is more variable in populations on isolated offshore banks than nearby shelf populations. Recruitment of cod ( Gadus morhua ) and American plaice ( Hippoghssoides plates‐soides ) on Flemish Cap is more variable than in any comparable population. Recruitment of haddock ( Melanogrammus aeglefinus ) on Rockall Bank is also more variable than in surrounding populations. These results are confirmed both by estimates obtained by virtual population analysis and by research surveys. Recruitment of haddock and herring ( Clupea harengus ) on Georges Bank is also more variable than in surrounding populations; however, the results for two other groundfish populations, cod and yellowtake flounder ( Limanda ferruginae ), on Georges Bank are ambiguous. We conclude that marine fish populations on isolated banks are more variable than those on nearby shelf regions. |
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