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Responses of intertidal nematodes to short-term anoxic events

Steyaert, M. and Moodley, L. and Nadong, T. and Moens, T. and Soetaert, K.E.R. and Vincx, M. (2007) Responses of intertidal nematodes to short-term anoxic events. Journal of Experimental Marine Biology and Ecology, 345, 175-184. ISSN 0022-0981.

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Official URL: http://dx.doi.org/10.1016/j.jembe.2007.03.001

Abstract

We investigated tolerance to, and activity of, nematodes in hypoxic and anoxic/partially sulphidic conditions and their ability for recovery after reoxygenation of anoxic sediment. To this end, sediments from an intertidal flat were incubated under oxic, suboxic and anoxic/partially sulphidic conditions for a 14-day period and the final density of nematodes, as a group, and of the most abundant species were assessed. In one treatment, oxygen was restored after anoxic incubation. The incorporation of 13C, originating from labeled algae added on top of the sediment, was taken as an indication of nematode activity. Short-term suboxic and anoxic/partially sulphidic conditions had similar structuring impact on the nematode community, reducing total densities by about one third. Survival in suboxic and anoxic/partially sulphidic conditions was species-specific. Daptonema setosum, D. tenuispiculum and Chromadora macrolaima, dominant in the oxic incubation, disappeared when the oxygen level was reduced. The density of the other dominant species was slightly reduced (Sabatieria pulchra), similar (Terschellingia

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:4544
Deposited On:16 Sep 2009 02:00
Last Modified:24 Apr 2012 16:48

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