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The effect of the Jessica grounding on subtidal invertebrate and plant communities at the Galápagos wreck site


Marshall, PA and Edgar, GJ, The effect of the Jessica grounding on subtidal invertebrate and plant communities at the Galapagos wreck site, Marine Pollution Bulletin, 47, (7-8) pp. 284-295. ISSN 0025-326X (2003) [Refereed Article]

DOI: doi:10.1016/S0025-326X(03)00157-7


Impacts of the grounding of the oil tanker Jessica off San Cristóbal island, Galápagos, included both effects of oil on biota and also mechanical effects associated with a shallow furrow 50 m x 30 m gouged across the rocky seafloor and wreckage strewn over 7500 m2. The wreckage represented a minor but potentially chronic source of pollution to the surrounding environment through delayed releases of oil, antifouling compounds and other toxic chemicals, and a possible source of exotic marine taxa. Investigation at the wreck site indicated that impacts on subtidal plant and macro-invertebrate communities were largely confined within 100 m of the wreck site itself. Observed population effects included significant increases in cover of opportunistic algae (filamentous green algae, filamentous red algae and Ulva sp.) and the hydroid Ectopleura media adjacent to the wreck, while densities of the green sea urchin Lytechinus semituberculatus significantly decreased from 0.3 m-2 adjacent to the wreck to 11 m-2 at 100 m distance. Crown Copyright © 2003 Published by Elsevier Science Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Transport
Objective Group:Environmentally sustainable transport activities
Objective Field:Environmentally sustainable transport activities not elsewhere classified
UTAS Author:Edgar, GJ (Professor Graham Edgar)
ID Code:27165
Year Published:2003
Web of Science® Times Cited:18
Deposited By:Zoology
Deposited On:2003-08-01
Last Modified:2011-11-21

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