dc.creator | Guerra García, José Manuel | |
dc.creator | González Vila, Francisco Javier | |
dc.creator | García Gómez, José Carlos | |
dc.date.accessioned | 2015-08-31T12:03:49Z | |
dc.date.available | 2015-08-31T12:03:49Z | |
dc.date.issued | 2003 | |
dc.identifier.issn | 0171-8630 | es |
dc.identifier.issn | 1616-1599 | es |
dc.identifier.uri | http://hdl.handle.net/11441/28112 | |
dc.description.abstract | The 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.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Inter-Research | es |
dc.relation.ispartof | Marine ecology. Progress series, 263, 127-138 | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Aliphatic hydrocarbon pollution | es |
dc.subject | Maltenes:asphaltenes | es |
dc.subject | Macrofauna | es |
dc.subject | Multivariate analysis | es |
dc.subject | Ceuta harbour | es |
dc.title | Aliphatic hydrocarbon pollution and macrobenthic assemblages in ceuta harbour: a multivariate approach | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.rights.accessrights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Zoología | es |
dc.relation.publisherversion | http://www.int-res.com/articles/meps2003/263/m263p127.pdf | es |
dc.relation.publisherversion | http://dx.doi.org/10.3354/meps263127 | |
dc.identifier.doi | 10.3354/meps263127 | |
dc.identifier.idus | https://idus.us.es/xmlui/handle/11441/28112 | |