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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Potential impact of the main benthic amphipods on the eastern Weddell Sea shelf ecosystem (Antarctica) Dauby, P.; Scailteur, Y.; Chapelle, G.; De Broyer, C. (2001). Potential impact of the main benthic amphipods on the eastern Weddell Sea shelf ecosystem (Antarctica). Polar Biol. 24(9): 657-662. dx.doi.org/10.1007/s003000100265 In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056, meer Is gerelateerd aan: Dauby, P.; Scailteur, Y.; Chapelle, G.; De Broyer, C. (2002). Potential impact of the main benthic amphipods on the eastern Weddell Sea shelf ecosystem (Antarctica), in: Arntz, W.E. et al. (Ed.) Ecological studies in the Antarctic sea ice zone: results of EASIZ Midterm Symposium. pp. 45-50, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 129955 [ download pdf ]

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Trefwoorden

Aquatic communities > Benthos > Zoobenthos Diets Ecosystem disturbance Stomach content Amphipoda [WoRMS] PSW, Weddell Sea [Marine Regions] Marien/Kust

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Auteurs		Top
Dauby, P., meer Scailteur, Y. Chapelle, G., meer De Broyer, C., meer

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Abstract

As they represent one of the most diversified taxonomic groups on Antarctic bottoms, amphipods are likely to play a complex role in biogeochemical fluxes that occur within benthic ecosystems. The aim of this paper is to present, using both digestive tract analyses and relative species abundance data, the impact of amphipod feeding on different potential preys of the Weddell Sea. The study is based on data obtained for 29 representative amphipod species collected at 130 stations distributed along the eastern shelf of the Weddell Sea (depth range: 60-2,000 m) during three summer cruises, from 1989 to 1998. Sedimenting plankton particles (10-27%), crustaceans (22-32%) and fish carrion (5-18%) are the main food resources. Other abundant potential preys, such as molluscs or tunicates, do not seem to be consumed. Variations in the proportions of the different preyed food items are observed, mainly related to differences in relative amphipod species composition in samples. Presented results will help in refining ecological models of the prospected area, but also underline the need for accurate and reliable measurements of the feeding rates of Antarctic benthic organisms.

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