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Are Antarctic suspension-feeding communities different from those elsewhere in the world? Gili, J.-M.; Coma, R.; Orejas, C.; López-González, P.J.; Zabala, M. (2001). Are Antarctic suspension-feeding communities different from those elsewhere in the world? Polar Biol. 24(7): 473-485. dx.doi.org/10.1007/s003000100257 In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056 Is gerelateerd aan: Gili, J.-M.; Coma, R.; Orejas, C.; López-González, P.J.; Zabala, M. (2002). Are Antarctic suspension-feeding communities different from those elsewhere in the world?, in: Arntz, W.E. et al. (Ed.) Ecological studies in the Antarctic sea ice zone: results of EASIZ Midterm Symposium. pp. 104-116, meer

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Trefwoorden

Climatic zones > Polar zones Composition > Community composition Environments > Aquatic environment > Benthic environment Particulates > Suspended particulate matter Suspension feeders Topographic features > Submarine features > Continental shelves Marien/Kust

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Auteurs		Top
Gili, J.-M. Coma, R. Orejas, C.	López-González, P.J. Zabala, M.

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Abstract

This paper reviews the trophic ecology of benthic suspension feeders in Antarctic shelf communities, studied within SCAR's EASIZ Programme, in comparison with published information from other seas. Dense benthic suspension-feeder communities capture large quantities of particles and may directly regulate primary, and indirectly, secondary production in littoral food chains. Most work has been performed in temperate and tropical seas; however, little is known about suspension feeders in cold environments. Recent studies on Antarctic littoral benthic suspension feeders suggest the period of winter inactivity may last only a few weeks. This contrasts with the hypothesis that in Antarctic communities there is a prolonged period of minimal activity lasting at least 6 months during the austral winter. Results from other oceans may explain how dense benthic communities could develop under such conditions. Alternative food sources, i.e. the "fine fraction", sediment resuspension, lateral advection and efficient food assimilation may play a significant role in the development of suspension-feeder dominated, very diversified, high biomass and three-dimensionally structured communities on the Antarctic shelf.

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