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Long-term divergent tidal flat benthic community recovery following hypoxia-induced mortality

Colen van, C. and Montserrat Trotsenburg, F. and Vincx, M. and Herman, P.M.J. and Ysebaert, T. and Degraer, S. (2010) Long-term divergent tidal flat benthic community recovery following hypoxia-induced mortality. Marine Pollution Bulletin, 60, 178-186. ISSN 0025-326X.

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Official URL: http://dx.doi.org/10.1016/j.marpolbul.2009.09.028

Abstract

Macrobenthos recovery after hypoxia-induced mass mortality was assessed in an estuarine tidal mudflat during 3 years. During the first 2 years, a Pearson–Rosenberg type of community recovery took place along with the improving bottom water oxygen conditions. After 3 months, spionid polychaetes became superabundant (i.e. opportunistic peak), followed rapidly by a steep decline (i.e. ecotone point). Subsequently, a moderate increase in species richness and a steep increase in biomass, related to the growth of long-lived species occurred (i.e. transition region). Afterwards, however, the recovering community diverged again from the ambient, undisturbed, sediments due to enhanced recruitment success of long-lived species presumably resulting from the lowered interference from bioturbation during early recovery stages in the disturbed plots. Hence, despite early community recovery may be more or less deterministic, lagged divergent community reassembling may occur at the longer-term, thereby contributing to benthos patchiness in areas which are frequently subjected to disturbances.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:6445
Deposited On:01 Jul 2010 02:00
Last Modified:04 Sep 2014 10:04

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