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The influence of Corophium volutator abundance on resuspension de Deckere, E.M.G.T.; van de Koppel, J.; Heip, C.H.R. (2000). The influence of Corophium volutator abundance on resuspension, in: Liebezeit, G. et al. Life at Interfaces and Under Extreme Conditions: Proceedings of the 33rd European Marine Biology Symposium, Wilhelmshaven, Germany, 7-11 September 1998. Developments in Hydrobiology, 151: pp. 37-42. https://dx.doi.org/10.1007/978-94-011-4148-2_3 In: Liebezeit, G.; Dittmann, S.; Kröncke, I. (Ed.) (2000). Life at interfaces and under extreme conditions: Proceedings of the 33rd European Marine Biology Symposium, Wilhelmshaven, Germany, 7-11 September 1998. European Marine Biology Symposia, 33. Developments in Hydrobiology, 151. ISBN 978-0-7923-6468-9; e-ISBN 978-94-011-4148-2. VII, 210 pp. https://dx.doi.org/10.1007/978-94-011-4148-2, meer In: European Marine Biology Symposia., meer Is gerelateerd aan: de Deckere, E.M.G.T.; van de Koppel, J.; Heip, C.H.R. (2000). The influence of Corophium volutator abundance on resuspension. Hydrobiologia 426: 37-42. https://dx.doi.org/10.1023/A:1003978714382, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 336236 [ aanvragen ]
Documenttype: Congresbijdrage

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Trefwoorden

Population characteristics > Population number Research > Experimental research Suspension > Resuspension Corophium volutator (Pallas, 1766) [WoRMS] Marien/Kust

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Auteurs		Top
de Deckere, E.M.G.T., meer van de Koppel, J., meer Heip, C.H.R., meer

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Abstract

Two experiments were performed to test the hypothesis that Corophium volutator affects the turbidity of water in estuaries through active resuspension of sediment. One experiment was done in a flume system under different flow velocities, and one in aquaria. A diatom film developed at the sediment surface in both experiments before Corophium was added. This diatom film was supposed to have a stabilising effect on the sediment. In both experiments, the concentration of suspended solids in the water column increased with the density of Corophium individuals. No effect of flow velocity on suspended solids concentration was found. This indicates that, in our flume experiment, active resuspension by Corophium was more important than physical resuspension, at least at low flow velocity (<20 cm s-1) and in the presence of a diatom film. The critical erosion threshold decreased with increasing Corophium density in the aquarium experiment, indicating that indirect effects of Corophium grazing may become more important at high levels of bottom shear stress. The implications of our findings for suspended solids concentration in estuarine systems are discussed.

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