Biomasa y composición del zooplancton de interés trófico pesquero en áreas del Atlántico Sudoccidental. Campaña H-09/92, 45°30' - 52°00'S, noviembre 1992.
This paper studies the mesozooplankton and macrozooplankton biomasses shelf distributions and their composition, during a spring survey. Samples were obtained by a Nackthai sampler. Wet weight biomasses were determined by direct weighing for each fraction. Mesozooplankton biomass ranged between 16 and 3600 mg. m-3, and the highest values (200 mg.m-3) were recorded between 47° and 50°S, at intermediate shelf. As a trend, biomass increased from coastal to offshore. A similar pattern was observed for the abundance, dominated by copepods (Drepanopus forcipatus and Calanus sp.) Macrozooplankton biomass ranged between 5 and 116 mg.m-3. The highest values were also recorded at intermediate shelf (50 mg.m-3) between 48° and 50°30'S. Abundance distribution showed a similar pattern, and eufausid (Euphausia spp.) and amphipods (Themisto gaudichaudii) alternated their dominance.
| Main Authors: | , |
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| Format: | Journal Contribution biblioteca |
| Language: | Spanish / Castilian |
| Published: |
1994
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| Subjects: | Zooplancton, Biomasa, Themisto gaudichaudii, Drepanopus forcipatus, Calanus sp., ASFA15::Y::Zooplankton, ASFA15::B::Biomass, |
| Online Access: | http://hdl.handle.net/1834/6986 |
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