Are intertidal soft sediment assemblages affected by repeated oil spill events? A field-based experimental approach

Environmental Pollution
Leonardo Sandrini-NetoPaulo da Cunha Lana

Abstract

This study investigates the impact of repeated diesel spills on the structure of intertidal macrofaunal assemblages of a subtropical estuary. Three frequencies of exposure events were compared against two dosages of oil in a factorial experiment with asymmetrical controls. Hypotheses were tested to distinguish between (i) the overall effect of oil spills, (ii) the effect of diesel dosage via different exposure regimes, and (iii) the effect of time since last spill. Repeated oil spills dramatically altered the overall structure of assemblages and reduced the total density of macrofauna and densities of dominant taxa. Increasing the frequency of oil spills negatively affected macrofauna. In general, frequent low-dosage oil spills were more deleterious than infrequent high-dosage ones. However, increases in densities of some taxa, mainly the gastropod Heleobia australis, were observed in response to infrequent spills. Our results highlight the importance of repeated exposure events in determining the extent of oil impacts.

References

Apr 23, 2003·Marine Pollution Bulletin·Michaela SchratzbergerRichard P J Swannell
Jun 18, 2003·Marine Pollution Bulletin·Graham J EdgarM Veronica Toral-Granda
Jan 17, 2004·Marine Pollution Bulletin·A ZenetosG Arvanitakis
Nov 21, 2007·Marine Environmental Research·Anne JørgensenOle Andersen
Dec 9, 2008·Marine Pollution Bulletin·P J GoodsellM G Chapman
Jul 21, 2009·Ecotoxicology and Environmental Safety·R B ChoueriT A DelValls
Nov 28, 2012·Marine Pollution Bulletin·F M SouzaM G Camargo

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Citations

Aug 5, 2016·Environmental Science and Pollution Research International·Adriana E SardiLionel Camus

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