Benthic community productivity in the Magellan Region and in the Weddell Sea

Our comparison of macrobenthic biomass, production and productivity of the Magellan region (14 - 349 m water depth) and the Weddell Sea (132 - 548 m water depth) is based on multi box corer samples collected in both areas. Biomass is slightly but not significantly lower in the Magellan region (7.3 g...

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Bibliographic Details
Published in:Scientia Marina
Main Authors: Thomas Brey, Dieter Gerdes
Format: Article in Journal/Newspaper
Language:English
Published: Consejo Superior de Investigaciones Científicas 1999
Subjects:
zoobenthos
productivity
antarctica
magellan region
Aquaculture. Fisheries. Angling
SH1-691
Weddell
Weddell Sea
Antarc*
Antarctica
Online Access:https://doi.org/10.3989/scimar.1999.63s1145
https://doaj.org/article/dc1a7d65d7c241ce81a87199b5ae3544
Description
Summary:Our comparison of macrobenthic biomass, production and productivity of the Magellan region (14 - 349 m water depth) and the Weddell Sea (132 - 548 m water depth) is based on multi box corer samples collected in both areas. Biomass is slightly but not significantly lower in the Magellan region (7.3 g C m-2) than in the Weddell Sea (12.0 g C m-2). Annual production and P/B ratio are higher in the Magellan region (5.1 g C m-2 y-1, 0.7 y-1) as compared to the Weddell Sea (3.6 g C m-2 y-1, 0.3 y-1). In the Magellan region, Mollusca, Polychaeta and Arthropoda dominate benthic production, whereas in the Weddell Sea Polychaeta, Porifera and Echinodermata are the most productive taxa.

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