Scientia Marina, Vol 63, No S1 (1999)

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


https://doi.org/10.3989/scimar.1999.63s1145

Thomas Brey
Alfred Wegener Institute for Polar and Marine Research, Germany

Dieter Gerdes
Alfred Wegener Institute for Polar and Marine Research, Germany

Abstract


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.

Keywords


zoobenthos; productivity; Antarctica; Magellan region

Full Text:


PDF


Copyright (c) 1999 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Contact us scimar@icm.csic.es

Technical support soporte.tecnico.revistas@csic.es