Microhabitat use by the white-clawed crayfish in a Tuscan stream.
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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/10174/1709 |
Resumo: | Habitat modification, pollution, overfishing, poaching, competition from nonindigenous species, and diseases have led to the extinction in Europe of many populations of indigenous crayfish. Under the rationale that any programme of reintroduction should be preceded by a thorough understanding of habitat requirements of the species of concern, we studied the microhabitat use of an Austropotamobius pallipes population in Tuscany, central Italy. Microhabitat use was assessed for water depth, current velocity, substrate, percentages of boulders, underwater tree roots, and in-stream vegetation cover. Results show that A. pallipes’ habitat use is size-partitioned. Smaller individuals mostly occupy stream edges in shallow waters with submerged roots, whereas larger individuals use deeper waters, often associated with boulders. Crayfish spatial distribution is restricted mostly to the microhabitats characterised by extensive cover and slow current velocity. The study highlights the importance of habitat heterogeneity and cover elements for the protection of this indigenous species. |
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Microhabitat use by the white-clawed crayfish in a Tuscan stream.biodiversity conservationfreshwater streamsHabitat modification, pollution, overfishing, poaching, competition from nonindigenous species, and diseases have led to the extinction in Europe of many populations of indigenous crayfish. Under the rationale that any programme of reintroduction should be preceded by a thorough understanding of habitat requirements of the species of concern, we studied the microhabitat use of an Austropotamobius pallipes population in Tuscany, central Italy. Microhabitat use was assessed for water depth, current velocity, substrate, percentages of boulders, underwater tree roots, and in-stream vegetation cover. Results show that A. pallipes’ habitat use is size-partitioned. Smaller individuals mostly occupy stream edges in shallow waters with submerged roots, whereas larger individuals use deeper waters, often associated with boulders. Crayfish spatial distribution is restricted mostly to the microhabitats characterised by extensive cover and slow current velocity. The study highlights the importance of habitat heterogeneity and cover elements for the protection of this indigenous species.Taylor & Francis Journals2009-05-18T15:54:59Z2009-05-182008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article264188 bytesapplication/pdfhttp://hdl.handle.net/10174/1709http://hdl.handle.net/10174/1709eng21-3342Journal of Natural History1-2livre-Paisagem Ambiente e Ordenamento -ICAAMmilheu@uevora.ptndndMicrohabitat use by the white-clawed crayfish in a Tuscan stream.221Ilhéu, MariaBenvenuto, C.Gherardi, F.info: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:RCAAP2024-01-03T18:37:37Zoai:dspace.uevora.pt:10174/1709Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:57:36.088157Repositório 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 |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
title |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
spellingShingle |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. Ilhéu, Maria biodiversity conservation freshwater streams |
title_short |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
title_full |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
title_fullStr |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
title_full_unstemmed |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
title_sort |
Microhabitat use by the white-clawed crayfish in a Tuscan stream. |
author |
Ilhéu, Maria |
author_facet |
Ilhéu, Maria Benvenuto, C. Gherardi, F. |
author_role |
author |
author2 |
Benvenuto, C. Gherardi, F. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ilhéu, Maria Benvenuto, C. Gherardi, F. |
dc.subject.por.fl_str_mv |
biodiversity conservation freshwater streams |
topic |
biodiversity conservation freshwater streams |
description |
Habitat modification, pollution, overfishing, poaching, competition from nonindigenous species, and diseases have led to the extinction in Europe of many populations of indigenous crayfish. Under the rationale that any programme of reintroduction should be preceded by a thorough understanding of habitat requirements of the species of concern, we studied the microhabitat use of an Austropotamobius pallipes population in Tuscany, central Italy. Microhabitat use was assessed for water depth, current velocity, substrate, percentages of boulders, underwater tree roots, and in-stream vegetation cover. Results show that A. pallipes’ habitat use is size-partitioned. Smaller individuals mostly occupy stream edges in shallow waters with submerged roots, whereas larger individuals use deeper waters, often associated with boulders. Crayfish spatial distribution is restricted mostly to the microhabitats characterised by extensive cover and slow current velocity. The study highlights the importance of habitat heterogeneity and cover elements for the protection of this indigenous species. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01T00:00:00Z 2009-05-18T15:54:59Z 2009-05-18 |
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/10174/1709 http://hdl.handle.net/10174/1709 |
url |
http://hdl.handle.net/10174/1709 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
21-33 42 Journal of Natural History 1-2 livre -Paisagem Ambiente e Ordenamento -ICAAM milheu@uevora.pt nd nd Microhabitat use by the white-clawed crayfish in a Tuscan stream. 221 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
264188 bytes application/pdf |
dc.publisher.none.fl_str_mv |
Taylor & Francis Journals |
publisher.none.fl_str_mv |
Taylor & Francis Journals |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136460307169280 |