Destabilization of Cohesive Intertidal Sediments by Infauna

Bioturbation activity was reduced in four plots on an intertidal mudflat in the Humber estuary (UK) during 4 days, by spraying the sediment with an insecticide, namely vydate. Macrofaunal, especially Nereis diversicolor and oligochaeta, and meiofaunal densities decreased, while the diatom biomass di...

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Veröffentlicht in:	Estuarine, coastal and shelf science coastal and shelf science, 2001-11, Vol.53 (5), p.665-669
Hauptverfasser:	de Deckere, E.M.G.T, Tolhurst, T.J, de Brouwer, J.F.C
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal, plant and microbial ecology Applied ecology benthos Biological and medical sciences bioturbation British Isles, England, Humber R Earth sciences Earth, ocean, space Ecotoxicology, biological effects of pollution erosion Exact sciences and technology Fundamental and applied biological sciences. Psychology Humber intertidal flats Marine and brackish environment Marine and continental quaternary Nereis diversicolor Oligochaeta sediment stability Surficial geology
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Beschreibung
Zusammenfassung:	Bioturbation activity was reduced in four plots on an intertidal mudflat in the Humber estuary (UK) during 4 days, by spraying the sediment with an insecticide, namely vydate. Macrofaunal, especially Nereis diversicolor and oligochaeta, and meiofaunal densities decreased, while the diatom biomass did not change. This resulted in a 300% increase in sediment stability, caused by a reduction in bioturbation and grazing pressure and a decrease in the water content.
ISSN:	0272-7714 1096-0015
DOI:	10.1006/ecss.2001.0811