Habitat loss as the main cause of the slow recovery of fish faunas of regulated large rivers in Europe: the transversal floodplain gradient
Identifieur interne : 001476 ( Istex/Corpus ); précédent : 001475; suivant : 001477Habitat loss as the main cause of the slow recovery of fish faunas of regulated large rivers in Europe: the transversal floodplain gradient
Auteurs : Bram G. W. Aarts ; Fred W. B. Van Den Brink ; Piet H. NienhuisSource :
- River Research and Applications [ 1535-1459 ] ; 2004-01.
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Abstract
In large European rivers the chemical water quality has improved markedly in recent decades, yet the recovery of the fish fauna is not proceeding accordingly. Important causes are the loss of habitats in the main river channels and their floodplains, and the diminished hydrological connectivity between them. In this study we investigate how river regulation has affected fish community structure in floodplain waterbodies of the rivers Rhône (France), Danube (Austria), Rhine and Meuse (The Netherlands). A typology of natural and man‐made aquatic habitats was constructed based on geomorphology, inundation frequency and ecological connectivity, along the transversal river–floodplain gradient, i.e. perpendicular to the main stream of the river. Fish species were classified in ecological guilds based on their flow preference, reproduction ecology and diet, and their status on national red lists was used to analyse the present state of the guilds and habitats. Ecological fish guilds appear to be good indicators of ecological integrity and functioning of river–floodplain systems. A transversal successional gradient in fish community structure that bears some resemblance to the gradient found in natural rivers can still be discerned in heavily regulated rivers. It resembles the longitudinal river gradient; even some predictions of the River Continuum Concept are applicable. Overall, richness and diversity of species and ecological guilds decrease with decreasing hydrological connectivity of floodplain waterbodies. Anthropogenic disturbances have affected fish species unevenly: guilds of specialized species that are highly adapted to specifically riverine conditions have declined far more than generalist species. Fish habitats in the main and secondary channels have suffered most from regulation and contain the highest percentage of threatened species. Rheophilic fishes have become rare because their lotic reproductive habitats are severely degraded, fragmented, absent or unreachable. Limnophilic fishes have become rare too, mainly as a result of eutrophication. Eurytopic fishes have become dominant everywhere. Copyright © 2003 John Wiley & Sons, Ltd.
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DOI: 10.1002/rra.720
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ISTEX:A0928D7DA4FC749E08F69E283B49F92C65881CCBLe document en format XML
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W." last="Aarts">Bram G. W. Aarts</name><affiliation><mods:affiliation>Department of Environmental Studies, University of Nijmegen, Nijmegen, The Netherlands</mods:affiliation></affiliation><affiliation><mods:affiliation>Department of Environmental Studies, University of Nijmegen, PO Box 9010, NL‐6500 GL Nijmegen, The Netherlands.</mods:affiliation></affiliation></author><author><name sortKey="Van Den Brink, Fred W B" sort="Van Den Brink, Fred W B" uniqKey="Van Den Brink F" first="Fred W. B." last="Van Den Brink">Fred W. B. Van Den Brink</name><affiliation><mods:affiliation>Department of Water Management, Province of Limburg, Maastricht, The Netherlands</mods:affiliation></affiliation></author><author><name sortKey="Nienhuis, Piet H" sort="Nienhuis, Piet H" uniqKey="Nienhuis P" first="Piet H." last="Nienhuis">Piet H. 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Important causes are the loss of habitats in the main river channels and their floodplains, and the diminished hydrological connectivity between them. In this study we investigate how river regulation has affected fish community structure in floodplain waterbodies of the rivers Rhône (France), Danube (Austria), Rhine and Meuse (The Netherlands). A typology of natural and man‐made aquatic habitats was constructed based on geomorphology, inundation frequency and ecological connectivity, along the transversal river–floodplain gradient, i.e. perpendicular to the main stream of the river. Fish species were classified in ecological guilds based on their flow preference, reproduction ecology and diet, and their status on national red lists was used to analyse the present state of the guilds and habitats. Ecological fish guilds appear to be good indicators of ecological integrity and functioning of river–floodplain systems. A transversal successional gradient in fish community structure that bears some resemblance to the gradient found in natural rivers can still be discerned in heavily regulated rivers. It resembles the longitudinal river gradient; even some predictions of the River Continuum Concept are applicable. Overall, richness and diversity of species and ecological guilds decrease with decreasing hydrological connectivity of floodplain waterbodies. Anthropogenic disturbances have affected fish species unevenly: guilds of specialized species that are highly adapted to specifically riverine conditions have declined far more than generalist species. Fish habitats in the main and secondary channels have suffered most from regulation and contain the highest percentage of threatened species. Rheophilic fishes have become rare because their lotic reproductive habitats are severely degraded, fragmented, absent or unreachable. Limnophilic fishes have become rare too, mainly as a result of eutrophication. Eurytopic fishes have become dominant everywhere. Copyright © 2003 John Wiley & Sons, Ltd.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Bram G. W. Aarts</name><affiliations><json:string>Department of Environmental Studies, University of Nijmegen, Nijmegen, The Netherlands</json:string><json:string>Department of Environmental Studies, University of Nijmegen, PO Box 9010, NL‐6500 GL Nijmegen, The Netherlands.</json:string></affiliations></json:item><json:item><name>Fred W. B. Van Den Brink</name><affiliations><json:string>Department of Water Management, Province of Limburg, Maastricht, The Netherlands</json:string></affiliations></json:item><json:item><name>Piet H. 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Important causes are the loss of habitats in the main river channels and their floodplains, and the diminished hydrological connectivity between them. In this study we investigate how river regulation has affected fish community structure in floodplain waterbodies of the rivers Rhône (France), Danube (Austria), Rhine and Meuse (The Netherlands). A typology of natural and man‐made aquatic habitats was constructed based on geomorphology, inundation frequency and ecological connectivity, along the transversal river–floodplain gradient, i.e. perpendicular to the main stream of the river. Fish species were classified in ecological guilds based on their flow preference, reproduction ecology and diet, and their status on national red lists was used to analyse the present state of the guilds and habitats. Ecological fish guilds appear to be good indicators of ecological integrity and functioning of river–floodplain systems. A transversal successional gradient in fish community structure that bears some resemblance to the gradient found in natural rivers can still be discerned in heavily regulated rivers. It resembles the longitudinal river gradient; even some predictions of the River Continuum Concept are applicable. Overall, richness and diversity of species and ecological guilds decrease with decreasing hydrological connectivity of floodplain waterbodies. Anthropogenic disturbances have affected fish species unevenly: guilds of specialized species that are highly adapted to specifically riverine conditions have declined far more than generalist species. Fish habitats in the main and secondary channels have suffered most from regulation and contain the highest percentage of threatened species. Rheophilic fishes have become rare because their lotic reproductive habitats are severely degraded, fragmented, absent or unreachable. Limnophilic fishes have become rare too, mainly as a result of eutrophication. Eurytopic fishes have become dominant everywhere. 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Important causes are the loss of habitats in the main river channels and their floodplains, and the diminished hydrological connectivity between them. In this study we investigate how river regulation has affected fish community structure in floodplain waterbodies of the rivers Rhône (France), Danube (Austria), Rhine and Meuse (The Netherlands). A typology of natural and man‐made aquatic habitats was constructed based on geomorphology, inundation frequency and ecological connectivity, along the transversal river–floodplain gradient, i.e. perpendicular to the main stream of the river. Fish species were classified in ecological guilds based on their flow preference, reproduction ecology and diet, and their status on national red lists was used to analyse the present state of the guilds and habitats. Ecological fish guilds appear to be good indicators of ecological integrity and functioning of river–floodplain systems. A transversal successional gradient in fish community structure that bears some resemblance to the gradient found in natural rivers can still be discerned in heavily regulated rivers. It resembles the longitudinal river gradient; even some predictions of the River Continuum Concept are applicable. Overall, richness and diversity of species and ecological guilds decrease with decreasing hydrological connectivity of floodplain waterbodies. Anthropogenic disturbances have affected fish species unevenly: guilds of specialized species that are highly adapted to specifically riverine conditions have declined far more than generalist species. Fish habitats in the main and secondary channels have suffered most from regulation and contain the highest percentage of threatened species. Rheophilic fishes have become rare because their lotic reproductive habitats are severely degraded, fragmented, absent or unreachable. Limnophilic fishes have become rare too, mainly as a result of eutrophication. Eurytopic fishes have become dominant everywhere. 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W.</givenNames><familyName>Aarts</familyName></personName><contactDetails><email>baarts@sci.kun.nl</email></contactDetails></creator><creator xml:id="au2" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Fred W. B.</givenNames><familyName>Van Den Brink</familyName></personName></creator><creator xml:id="au3" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Piet H.</givenNames><familyName>Nienhuis</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="af1" countryCode="NL" type="organization"><unparsedAffiliation>Department of Environmental Studies, University of Nijmegen, Nijmegen, The Netherlands</unparsedAffiliation></affiliation><affiliation xml:id="af2" countryCode="NL" type="organization"><unparsedAffiliation>Department of Water Management, Province of Limburg, Maastricht, The Netherlands</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">habitat loss</keyword><keyword xml:id="kwd2">fish guilds</keyword><keyword xml:id="kwd3">regulated rivers</keyword><keyword xml:id="kwd4">floodplain</keyword><keyword xml:id="kwd5">Rhône</keyword><keyword xml:id="kwd6">Danube</keyword><keyword xml:id="kwd7">Rhine</keyword><keyword xml:id="kwd8">Meuse</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>In large European rivers the chemical water quality has improved markedly in recent decades, yet the recovery of the fish fauna is not proceeding accordingly. Important causes are the loss of habitats in the main river channels and their floodplains, and the diminished hydrological connectivity between them.</p><p>In this study we investigate how river regulation has affected fish community structure in floodplain waterbodies of the rivers Rhône (France), Danube (Austria), Rhine and Meuse (The Netherlands). A typology of natural and man‐made aquatic habitats was constructed based on geomorphology, inundation frequency and ecological connectivity, along the transversal river–floodplain gradient, i.e. perpendicular to the main stream of the river. Fish species were classified in ecological guilds based on their flow preference, reproduction ecology and diet, and their status on national red lists was used to analyse the present state of the guilds and habitats.</p><p>Ecological fish guilds appear to be good indicators of ecological integrity and functioning of river–floodplain systems. A transversal successional gradient in fish community structure that bears some resemblance to the gradient found in natural rivers can still be discerned in heavily regulated rivers. It resembles the longitudinal river gradient; even some predictions of the River Continuum Concept are applicable. Overall, richness and diversity of species and ecological guilds decrease with decreasing hydrological connectivity of floodplain waterbodies.</p><p>Anthropogenic disturbances have affected fish species unevenly: guilds of specialized species that are highly adapted to specifically riverine conditions have declined far more than generalist species. Fish habitats in the main and secondary channels have suffered most from regulation and contain the highest percentage of threatened species. Rheophilic fishes have become rare because their lotic reproductive habitats are severely degraded, fragmented, absent or unreachable. Limnophilic fishes have become rare too, mainly as a result of eutrophication. Eurytopic fishes have become dominant everywhere. Copyright © 2003 John Wiley & Sons, Ltd.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Habitat loss as the main cause of the slow recovery of fish faunas of regulated large rivers in Europe: the transversal floodplain gradient</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>FLOODPLAIN FISH COMMUNITIES</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Habitat loss as the main cause of the slow recovery of fish faunas of regulated large rivers in Europe: the transversal floodplain gradient</title></titleInfo><name type="personal"><namePart type="given">Bram G. W.</namePart><namePart type="family">Aarts</namePart><affiliation>Department of Environmental Studies, University of Nijmegen, Nijmegen, The Netherlands</affiliation><affiliation>Department of Environmental Studies, University of Nijmegen, PO Box 9010, NL‐6500 GL Nijmegen, The Netherlands.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Fred W. B.</namePart><namePart type="family">Van Den Brink</namePart><affiliation>Department of Water Management, Province of Limburg, Maastricht, The Netherlands</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Piet H.</namePart><namePart type="family">Nienhuis</namePart><affiliation>Department of Environmental Studies, University of Nijmegen, Nijmegen, The Netherlands</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>John Wiley & Sons, Ltd.</publisher><place><placeTerm type="text">Chichester, UK</placeTerm></place><dateIssued encoding="w3cdtf">2004-01</dateIssued><copyrightDate encoding="w3cdtf">2004</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">8</extent><extent unit="tables">2</extent><extent unit="references">76</extent></physicalDescription><abstract lang="en">In large European rivers the chemical water quality has improved markedly in recent decades, yet the recovery of the fish fauna is not proceeding accordingly. Important causes are the loss of habitats in the main river channels and their floodplains, and the diminished hydrological connectivity between them. In this study we investigate how river regulation has affected fish community structure in floodplain waterbodies of the rivers Rhône (France), Danube (Austria), Rhine and Meuse (The Netherlands). A typology of natural and man‐made aquatic habitats was constructed based on geomorphology, inundation frequency and ecological connectivity, along the transversal river–floodplain gradient, i.e. perpendicular to the main stream of the river. Fish species were classified in ecological guilds based on their flow preference, reproduction ecology and diet, and their status on national red lists was used to analyse the present state of the guilds and habitats. Ecological fish guilds appear to be good indicators of ecological integrity and functioning of river–floodplain systems. A transversal successional gradient in fish community structure that bears some resemblance to the gradient found in natural rivers can still be discerned in heavily regulated rivers. It resembles the longitudinal river gradient; even some predictions of the River Continuum Concept are applicable. Overall, richness and diversity of species and ecological guilds decrease with decreasing hydrological connectivity of floodplain waterbodies. Anthropogenic disturbances have affected fish species unevenly: guilds of specialized species that are highly adapted to specifically riverine conditions have declined far more than generalist species. Fish habitats in the main and secondary channels have suffered most from regulation and contain the highest percentage of threatened species. Rheophilic fishes have become rare because their lotic reproductive habitats are severely degraded, fragmented, absent or unreachable. Limnophilic fishes have become rare too, mainly as a result of eutrophication. Eurytopic fishes have become dominant everywhere. Copyright © 2003 John Wiley & Sons, Ltd.</abstract><subject lang="en"><genre>keywords</genre><topic>habitat loss</topic><topic>fish guilds</topic><topic>regulated rivers</topic><topic>floodplain</topic><topic>Rhône</topic><topic>Danube</topic><topic>Rhine</topic><topic>Meuse</topic></subject><relatedItem type="host"><titleInfo><title>River Research and Applications</title></titleInfo><titleInfo type="abbreviated"><title>River Res. Applic.</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Research Article</topic></subject><identifier type="ISSN">1535-1459</identifier><identifier type="eISSN">1535-1467</identifier><identifier type="DOI">10.1002/(ISSN)1535-1467</identifier><identifier type="PublisherID">RRA</identifier><part><date>2004</date><detail type="volume"><caption>vol.</caption><number>20</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>3</start><end>23</end><total>21</total></extent></part></relatedItem><relatedItem type="preceding"><titleInfo><title>Regulated Rivers: Research & Management</title></titleInfo><identifier type="ISSN">0886-9375</identifier><identifier type="ISSN">1099-1646</identifier><part><date point="end">2001</date><detail type="volume"><caption>last vol.</caption><number>17</number></detail><detail type="issue"><caption>last no.</caption><number>6</number></detail></part></relatedItem><identifier type="istex">A0928D7DA4FC749E08F69E283B49F92C65881CCB</identifier><identifier type="DOI">10.1002/rra.720</identifier><identifier type="ArticleID">RRA720</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2003 John Wiley & Sons, Ltd.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>John Wiley & Sons, Ltd.</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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