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Long-term divergent tidal flat benthic community recovery following hypoxia-induced mortality Van Colen, C.; Montserrat, F.; Vincx, M.; Herman, P.M.J.; Ysebaert, T.J.; Degraer, S. (2010). Long-term divergent tidal flat benthic community recovery following hypoxia-induced mortality. Mar. Pollut. Bull. 60(2): 178-186. dx.doi.org/10.1016/j.marpolbul.2009.09.028 In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 156297 [ download pdf ]

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Trefwoorden

Aquatic communities > Benthos Diseases > Human diseases > Hypoxia Interference Macrobenthos Recovery Sediment mixing > Bioturbation Marien/Kust; Brak water

Author keywords

Macrobenthos; Recovery; Hypoxia; Estuarine tidal mudflat; Interference from bioturbation

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Auteurs		Top
Van Colen, C. Montserrat, F. Vincx, M.	Herman, P.M.J. Ysebaert, T.J. Degraer, S.

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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.

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