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dc.creatorGuerra García, José Manuel
dc.creatorGonzález Vila, Francisco Javier
dc.creatorGarcía Gómez, José Carlos
dc.date.accessioned2015-08-31T12:03:49Z
dc.date.available2015-08-31T12:03:49Z
dc.date.issued2003
dc.identifier.issn0171-8630es
dc.identifier.issn1616-1599es
dc.identifier.urihttp://hdl.handle.net/11441/28112
dc.description.abstractThe aliphatic hydrocarbon composition of sediments from Ceuta harbour, North Africa, was studied to determine the sources, levels and effects of these hydrocarbons on macrofauna com- position by considering indices and concentration ratios in multivariate analyses. A total of 21 stations (15 inside and 6 outside the harbour) were sampled using a van Veen grab. High hydrocarbon con- centrations (496 to 6972 ppm), the dominance of the UCM (unresolved complex mixture) in relation to the resolved alkanes, and values close to the unity ( ≈ 1) of the CPI (carbon preference index) and pristane:phytane ratio indicated anthropogenic origins of the hydrocarbons. Ceuta harbour is char- acterised by intense traffic, and frequent loading and dumping related to shipping operations. Fur- thermore, 2 urban effluent outfalls of Ceuta city flow into the harbour. The relationship between macrofauna and the above-measured parameters was evident in canonical correspondence analysis (CCA). Variation in species composition at different sample stations was related to the ratios of maltenes to other hydrocarbons, pristane:phytane and, especially, maltenes:asphaltenes, which turned out to be the main factor discriminating between internal and external stations according to species distribution. The crustaceans Corophium runcicorne and C. sextonae , the mollusc Parvi- cardium exiguum and the polychaete Pseudomalacoceros tridentata were only found at internal sta- tions, while the polychaetes Jasmineira elegans and Scoloplos armiger were present only at external stations. The abundance of the crustaceans Apseudes latreilli , Leptochelia dubia and Pariambus typicus , and the polychaetes Capitella capitata , Nereis falsa and Potamilla reniformis , differed sig- nificantly between the internal and external stations. Although the asphaltene fraction is potentially hazardous to sediment macrofauna, due to its high molecular weight and its slow degradation, the r elationship between the distribution of marine organisms and the presence of asphaltenes has never been explored in previous studies.es
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherInter-Researches
dc.relation.ispartofMarine ecology. Progress series, 263, 127-138es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAliphatic hydrocarbon pollutiones
dc.subjectMaltenes:asphalteneses
dc.subjectMacrofaunaes
dc.subjectMultivariate analysises
dc.subjectCeuta harboures
dc.titleAliphatic hydrocarbon pollution and macrobenthic assemblages in ceuta harbour: a multivariate approaches
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.rights.accessrightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Zoologíaes
dc.relation.publisherversionhttp://www.int-res.com/articles/meps2003/263/m263p127.pdfes
dc.relation.publisherversionhttp://dx.doi.org/10.3354/meps263127
dc.identifier.doi10.3354/meps263127
dc.identifier.idushttps://idus.us.es/xmlui/handle/11441/28112

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