Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis

Detalhes bibliográficos
Autor(a) principal: Santos, J.M.
Data de Publicação: 2008
Outros Autores: Ferreira, M.T.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10400.5/5929
Resumo: Research Article
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spelling Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensismicrohabitat useIberian naseIberian chubprincipal component analysisoverlapfisheries managementResearch ArticleOver the last decade there has been a major rise in the number of attempts at fish conservation and management as a response to the widespread degradation of aquatic ecosystems. The assessments involved are rarely planned and executed with inputs from the species life history, particularly their microhabitat use over space and time.The seasonal and sizerelated microhabitat use of two critically endangered cyprinids – the Iberian nase Iberochondrostoma almacai and Iberian chub Squalius aradensis – was examined at seven sites across four small catchments in southwest Portugal. Both species displayed nonrandom microhabitat use. In autumn, nase preferred more sheltered (>50% cover) habitats with small substrata (organic cover and silt) than in summer, while chub were found to occupy significantly fasterflowing habitats areas (>10 cm/s) with coarser substrata (>50 mm particle size) in the spring than in the rest of the year. Size-related analyses indicated that young-of-year (yoy) nase used coarser substrata (>5 mm particle size) and more exposed habitats (<50% cover) than adult nase. Adult chub, on the other hand, occupied coarser substrata (>50 mm particle size) and faster-flowing areas (>10 cm/s) than yoy and juveniles. Based on these findings, it was possible to assign the species to ecological guilds and to classify them as limnophilic (nase) and eurytopic and lithophilic (chub). Both species generally occupied distinct microhabitats, although resource- use overlap was significant in summer. During this season, overlap was found between yoy nase and chub, juvenile nase and juvenile/adult chub, and between adults of both species. The present study identified key factors in the species habitat requirements and helped develop management recommendations for river restoration that may have a wider application, particularly for other Mediterraneantype riversBirkhauser VerlagRepositório da Universidade de LisboaSantos, J.M.Ferreira, M.T.2013-09-03T13:53:11Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/5929eng"Aquatic Sciences". ISSN 1015-1621. 70(3) (2008) 272-2811015-1621info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T15:57:54Zoai:repositorio.ulisboa.pt:10400.5/5929Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T03:58:55.479121Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
title Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
spellingShingle Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
Santos, J.M.
microhabitat use
Iberian nase
Iberian chub
principal component analysis
overlap
fisheries management
title_short Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
title_full Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
title_fullStr Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
title_full_unstemmed Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
title_sort Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis
author Santos, J.M.
author_facet Santos, J.M.
Ferreira, M.T.
author_role author
author2 Ferreira, M.T.
author2_role author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Santos, J.M.
Ferreira, M.T.
dc.subject.por.fl_str_mv microhabitat use
Iberian nase
Iberian chub
principal component analysis
overlap
fisheries management
topic microhabitat use
Iberian nase
Iberian chub
principal component analysis
overlap
fisheries management
description Research Article
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2013-09-03T13:53:11Z
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/10400.5/5929
url http://hdl.handle.net/10400.5/5929
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Aquatic Sciences". ISSN 1015-1621. 70(3) (2008) 272-281
1015-1621
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 Birkhauser Verlag
publisher.none.fl_str_mv Birkhauser Verlag
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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