Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal)
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/6713 |
Resumo: | Macrofauna community structure within Nazare Submarine Canyon is analysed and used to assess the potential effects of natural enrichment in this area subjected to accumulation of coastal sediments. A transect including three stations (2894. 3514 and 4141 in) was carried out in the Nazare Submarine Canyon (NW Portugal) during a cruise of OMEX 11 programme (Ocean Margin Exchange), in the winter season of 1999. Although data was not collected in order to calculate sedimentation rates. sampling station at 2894 m is located in an area characterised by high levels of sedimentation, thus a high amount of organic matter is expected to be available for the local communities. Faunistic data are discussed in the context of the different features of the stations sampled. Multivariate analysis clearly separates the shallowest station from the other ones. which otherwise appear to be very similar. It also revealed a perceptible gradient along sediment depth at all stations. from shallow to deeper layers. Exceptionally depressed species richness and low evenness Values were observed at the 2894 m station. The high number of individuals of a single species, Cossura sp. A. and the atypical diversity, dominance and evenness values obtained for this station Support the hypothesis of community disturbance due to organic enrichment. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal)deep seasubmarine canyonsNE Atlanticmacrobenthoscommunity structurenatural organic enrichmentMacrofauna community structure within Nazare Submarine Canyon is analysed and used to assess the potential effects of natural enrichment in this area subjected to accumulation of coastal sediments. A transect including three stations (2894. 3514 and 4141 in) was carried out in the Nazare Submarine Canyon (NW Portugal) during a cruise of OMEX 11 programme (Ocean Margin Exchange), in the winter season of 1999. Although data was not collected in order to calculate sedimentation rates. sampling station at 2894 m is located in an area characterised by high levels of sedimentation, thus a high amount of organic matter is expected to be available for the local communities. Faunistic data are discussed in the context of the different features of the stations sampled. Multivariate analysis clearly separates the shallowest station from the other ones. which otherwise appear to be very similar. It also revealed a perceptible gradient along sediment depth at all stations. from shallow to deeper layers. Exceptionally depressed species richness and low evenness Values were observed at the 2894 m station. The high number of individuals of a single species, Cossura sp. A. and the atypical diversity, dominance and evenness values obtained for this station Support the hypothesis of community disturbance due to organic enrichment.Consejo Superior de Investigaciones Científicas2012-02-20T17:21:57Z2004-04-01T00:00:00Z2004-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/6713eng0214-835810.3989/scimar.2004.68s1171Curdia, JCarvalho, SRavara, AscensãoGage, JDRodrigues, AMQuintino, Vinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:07:52Zoai:ria.ua.pt:10773/6713Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:43:21.442267Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
title |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
spellingShingle |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) Curdia, J deep sea submarine canyons NE Atlantic macrobenthos community structure natural organic enrichment |
title_short |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
title_full |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
title_fullStr |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
title_full_unstemmed |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
title_sort |
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal) |
author |
Curdia, J |
author_facet |
Curdia, J Carvalho, S Ravara, Ascensão Gage, JD Rodrigues, AM Quintino, V |
author_role |
author |
author2 |
Carvalho, S Ravara, Ascensão Gage, JD Rodrigues, AM Quintino, V |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Curdia, J Carvalho, S Ravara, Ascensão Gage, JD Rodrigues, AM Quintino, V |
dc.subject.por.fl_str_mv |
deep sea submarine canyons NE Atlantic macrobenthos community structure natural organic enrichment |
topic |
deep sea submarine canyons NE Atlantic macrobenthos community structure natural organic enrichment |
description |
Macrofauna community structure within Nazare Submarine Canyon is analysed and used to assess the potential effects of natural enrichment in this area subjected to accumulation of coastal sediments. A transect including three stations (2894. 3514 and 4141 in) was carried out in the Nazare Submarine Canyon (NW Portugal) during a cruise of OMEX 11 programme (Ocean Margin Exchange), in the winter season of 1999. Although data was not collected in order to calculate sedimentation rates. sampling station at 2894 m is located in an area characterised by high levels of sedimentation, thus a high amount of organic matter is expected to be available for the local communities. Faunistic data are discussed in the context of the different features of the stations sampled. Multivariate analysis clearly separates the shallowest station from the other ones. which otherwise appear to be very similar. It also revealed a perceptible gradient along sediment depth at all stations. from shallow to deeper layers. Exceptionally depressed species richness and low evenness Values were observed at the 2894 m station. The high number of individuals of a single species, Cossura sp. A. and the atypical diversity, dominance and evenness values obtained for this station Support the hypothesis of community disturbance due to organic enrichment. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-04-01T00:00:00Z 2004-04 2012-02-20T17:21:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/6713 |
url |
http://hdl.handle.net/10773/6713 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0214-8358 10.3989/scimar.2004.68s1171 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Consejo Superior de Investigaciones Científicas |
publisher.none.fl_str_mv |
Consejo Superior de Investigaciones Científicas |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137483205640192 |