Vertical distribution patterns of copepods, chlorophyll, and production in northeastern
High resolution vertical distributions of chlorophyll and zooplankton were collected with an instrumented Batfish vehicle in northeastern Baffin Bay. The dominant copepod species wc1.e Calanusfinmllrchicus, Calanus glncinlis, and Calanus hyperlporeus V and VI. Copepod layers consisting of C. jkmclr-...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.318.438 http://new.aslo.org/lo/toc/vol_28/issue_4/0709.pdf |
| Summary: | High resolution vertical distributions of chlorophyll and zooplankton were collected with an instrumented Batfish vehicle in northeastern Baffin Bay. The dominant copepod species wc1.e Calanusfinmllrchicus, Calanus glncinlis, and Calanus hyperlporeus V and VI. Copepod layers consisting of C. jkmclr-chicus and C. glncialis were commonly situated ~3-4 m above the chlorophyll maximum in a depth region corresponding to the peak in the derived vertical profile of primary production. Cnlnnus hyperhoreus V and VI coincided with the chlorophyll maximum. Estimates of daily copepod grazing rations based on daily primary production and the density of copepods, with the assumption of steady state, were ~20 % body C. cl-‘. The vertical relationships between zooplankton and chlorophyll often require high-resolution measurements to resolve their depth differential. In studies of the Scotian Shelf waters (Herman et al. 1981), we found that copepods did not aggregate at the chlorophyll maximum |
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