作者: R. Danovaro , M. Fabiano , M. Vincx
DOI: 10.1016/0025-326X(94)00114-O
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摘要: Abstract The effects of the Agip Abruzzo oil spill (10 April 1991) on meiobenthic assemblages Ligurian Sea were investigated using samples collected from January 1991 to 1992. Meiofauna appeared be highly sensitive hydrocarbon stress since determined an observable decline in density, relative pre-pollution conditions. Such patterns unusual reported a period which, because usual seasonality Mediterranean meiofauna, we would expect increase density. In particular, clear decreases nematode, turbellarian and foraminiferan densities observed. Oil-induced disturbance had no influence copepods, which slightly increased after spill, probably they dominated by epibenthic forms able escape toxic pollution. results classification ordination analyses as well univariate indices indicated that level major meiofaunal groups was not sufficient for detecting oil-induced disturbance, but nematodes at genus proved efficient. evident changes terms decrease N 1 diversity. Changes also observed richness k -dominance curves nematode genera, showing overall community One month diversity similar contrast, nematode: copepod ratio its modifications induced inadequate Similarly, significant variations when analysing index trophic However, nonselective deposit feeding (1B) declined thus indicating possible functional characteristics assemblages. Meiofaunal response pollution extremely rapid. structure significantly affected only immediately (22 1991). Univariate multivariate structural meiobenthos recovered 2 weeks almost indistinguishable conditions few later, high resilience these