Estimations of mesozooplankton biomass in a coastal upwelling area off NW Spain

The abundance and several estimators of mesozooplankton biomass (dry weight, ash-free dry weight, displacement volume, carbon and nitrogen) were measured in a coastal upwelling area off La Coru***na (NW Spain) at monthly intervals between 1990 and 1995. Holoplanktonic copepods dominated in most of t...

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Bibliographic Details
Published in:Journal of plankton research 1998-05, Vol.20 (5), p.1005-1014
Main Authors: Bode, Antonio, Álvarez-Ossorio, M.Teresa, González, Nicolás
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
Marine
Methods and techniques (sampling, tagging, trapping, modelling...)
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Summary:The abundance and several estimators of mesozooplankton biomass (dry weight, ash-free dry weight, displacement volume, carbon and nitrogen) were measured in a coastal upwelling area off La Coru***na (NW Spain) at monthly intervals between 1990 and 1995. Holoplanktonic copepods dominated in most of the samples, but meroplanktonwere also important near the coast, especially during late spring and through summer. Gelatinous organisms (medusae, siphonophores and larvaceans) reached significant abundances (-10%) in shelf waters by late summer, but also near the coast in spring. Log-linear equations were computed between dry weight, displacement volumeand the other biomass estimators, to allow for interconversion among different measurements. To prevent the influence of meroplankton and gelatinous zooplankton in the estimations of biomass, the equations were adjusted using only samples in which the abundance of each of these groups was
ISSN:0142-7873
1464-3774
DOI:10.1093/plankt/20.5.1005