The distribution and environmental state of vegetated islands within human‐impacted European rivers
Identifieur interne : 001050 ( Istex/Corpus ); précédent : 001049; suivant : 001051The distribution and environmental state of vegetated islands within human‐impacted European rivers
Auteurs : Luisa Fernanda Ricaurte ; Sarah Boesch ; Jukka Jokela ; Klement TocknerSource :
- Freshwater Biology [ 0046-5070 ] ; 2012-12.
English descriptors
- KwdEn :
Abstract
1. Vegetated islands within river corridors are pivotal landscape features and are among the first to disappear as a consequence of flow regulation and channelisation. However, how vegetated islands vary along human‐impacted rivers is poorly understood. 2. We carried out a detailed analysis of the contemporary distribution, diversity and environmental state of vegetated islands within 12 human‐impacted European rivers, using 75 Landsat 7 ETM+ satellite images (1999–2002), historical maps, DEM data and landscape metrics. We tested whether channel fragmentation, catchment land use and the environmental state of fringing floodplains determine the spatial patterns of the islands. We also analysed the historical change of islands within selected sections of the Upper Danube, Upper Rhine and Olt rivers. 3. We identified 2771 islands in the contemporary landscape, varying from 0.06 to 9828 ha. Islands covered up to 21% of the active channel area and contributed up to 32% of the total riparian ecotone length. Island density ranged from 0.06 islands per river‐km (River Sava) to 1.6 islands per river‐km (River Tagliamento). River regulation has led to a marked loss of island density: 94% in the Upper Danube, 93% in the Upper Rhine, and 69% in the Olt. The environmental state of the islands was significantly less altered by human activity than of their fringing floodplains; 93.4% of the vegetated islands exhibited a near‐natural state, while 86% of the fringing floodplains were expansively converted to agricultural and urban land uses. 4. Our results highlight the ubiquitous presence of vegetated islands, their sensitivity to river regulation and their pivotal role for the future restoration and management of river corridors.
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DOI: 10.1111/fwb.12026
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ISTEX:9A968736B235AB0F7285A2B91188416EED6D8F25Le document en format XML
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sort="Tockner, Klement" uniqKey="Tockner K" first="Klement" last="Tockner">Klement Tockner</name><affiliation><mods:affiliation>Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany</mods:affiliation></affiliation><affiliation><mods:affiliation>Institute of Biology, Freie Universität, Berlin, Germany</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Freshwater Biology</title><idno type="ISSN">0046-5070</idno><idno type="eISSN">1365-2427</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2012-12">2012-12</date><biblScope unit="volume">57</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="2539">2539</biblScope><biblScope unit="page" to="2549">2549</biblScope></imprint><idno type="ISSN">0046-5070</idno></series><idno type="istex">9A968736B235AB0F7285A2B91188416EED6D8F25</idno><idno 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Vegetated islands within river corridors are pivotal landscape features and are among the first to disappear as a consequence of flow regulation and channelisation. However, how vegetated islands vary along human‐impacted rivers is poorly understood. 2. We carried out a detailed analysis of the contemporary distribution, diversity and environmental state of vegetated islands within 12 human‐impacted European rivers, using 75 Landsat 7 ETM+ satellite images (1999–2002), historical maps, DEM data and landscape metrics. We tested whether channel fragmentation, catchment land use and the environmental state of fringing floodplains determine the spatial patterns of the islands. We also analysed the historical change of islands within selected sections of the Upper Danube, Upper Rhine and Olt rivers. 3. We identified 2771 islands in the contemporary landscape, varying from 0.06 to 9828 ha. Islands covered up to 21% of the active channel area and contributed up to 32% of the total riparian ecotone length. Island density ranged from 0.06 islands per river‐km (River Sava) to 1.6 islands per river‐km (River Tagliamento). River regulation has led to a marked loss of island density: 94% in the Upper Danube, 93% in the Upper Rhine, and 69% in the Olt. The environmental state of the islands was significantly less altered by human activity than of their fringing floodplains; 93.4% of the vegetated islands exhibited a near‐natural state, while 86% of the fringing floodplains were expansively converted to agricultural and urban land uses. 4. Our results highlight the ubiquitous presence of vegetated islands, their sensitivity to river regulation and their pivotal role for the future restoration and management of river corridors.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>LUISA FERNANDA RICAURTE</name><affiliations><json:string>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</json:string><json:string>ETH‐Zurich, IBZ, Institute of Integrative Biology, Zurich, Switzerland</json:string></affiliations></json:item><json:item><name>SARAH BOESCH</name><affiliations><json:string>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</json:string></affiliations></json:item><json:item><name>JUKKA JOKELA</name><affiliations><json:string>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</json:string><json:string>ETH‐Zurich, IBZ, Institute of Integrative Biology, Zurich, Switzerland</json:string></affiliations></json:item><json:item><name>KLEMENT TOCKNER</name><affiliations><json:string>Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany</json:string><json:string>Institute of Biology, Freie Universität, Berlin, Germany</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>biodiversity</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>conservation</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>floodplain</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>fluvial dynamics</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>landscape</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>management</value></json:item></subject><articleId><json:string>FWB12026</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>1. Vegetated islands within river corridors are pivotal landscape features and are among the first to disappear as a consequence of flow regulation and channelisation. However, how vegetated islands vary along human‐impacted rivers is poorly understood. 2. We carried out a detailed analysis of the contemporary distribution, diversity and environmental state of vegetated islands within 12 human‐impacted European rivers, using 75 Landsat 7 ETM+ satellite images (1999–2002), historical maps, DEM data and landscape metrics. We tested whether channel fragmentation, catchment land use and the environmental state of fringing floodplains determine the spatial patterns of the islands. We also analysed the historical change of islands within selected sections of the Upper Danube, Upper Rhine and Olt rivers. 3. We identified 2771 islands in the contemporary landscape, varying from 0.06 to 9828 ha. Islands covered up to 21% of the active channel area and contributed up to 32% of the total riparian ecotone length. Island density ranged from 0.06 islands per river‐km (River Sava) to 1.6 islands per river‐km (River Tagliamento). River regulation has led to a marked loss of island density: 94% in the Upper Danube, 93% in the Upper Rhine, and 69% in the Olt. The environmental state of the islands was significantly less altered by human activity than of their fringing floodplains; 93.4% of the vegetated islands exhibited a near‐natural state, while 86% of the fringing floodplains were expansively converted to agricultural and urban land uses. 4. 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Vegetated islands within river corridors are pivotal landscape features and are among the first to disappear as a consequence of flow regulation and channelisation. However, how vegetated islands vary along human‐impacted rivers is poorly understood. 2. We carried out a detailed analysis of the contemporary distribution, diversity and environmental state of vegetated islands within 12 human‐impacted European rivers, using 75 Landsat 7 ETM+ satellite images (1999–2002), historical maps, DEM data and landscape metrics. We tested whether channel fragmentation, catchment land use and the environmental state of fringing floodplains determine the spatial patterns of the islands. We also analysed the historical change of islands within selected sections of the Upper Danube, Upper Rhine and Olt rivers. 3. We identified 2771 islands in the contemporary landscape, varying from 0.06 to 9828 ha. Islands covered up to 21% of the active channel area and contributed up to 32% of the total riparian ecotone length. Island density ranged from 0.06 islands per river‐km (River Sava) to 1.6 islands per river‐km (River Tagliamento). River regulation has led to a marked loss of island density: 94% in the Upper Danube, 93% in the Upper Rhine, and 69% in the Olt. The environmental state of the islands was significantly less altered by human activity than of their fringing floodplains; 93.4% of the vegetated islands exhibited a near‐natural state, while 86% of the fringing floodplains were expansively converted to agricultural and urban land uses. 4. Our results highlight the ubiquitous presence of vegetated islands, their sensitivity to river regulation and their pivotal role for the future restoration and management of river corridors.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>biodiversity</term></item><item><term>conservation</term></item><item><term>floodplain</term></item><item><term>fluvial dynamics</term></item><item><term>landscape</term></item><item><term>management</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2012-12">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/9A968736B235AB0F7285A2B91188416EED6D8F25/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1365-2427</doi><issn type="print">0046-5070</issn><issn type="electronic">1365-2427</issn><idGroup><id type="product" value="FWB"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="FRESHWATER BIOLOGY">Freshwater Biology</title></titleGroup></publicationMeta><publicationMeta level="part" position="12112"><doi origin="wiley">10.1111/fwb.2012.57.issue-12</doi><numberingGroup><numbering type="journalVolume" number="57">57</numbering><numbering type="journalIssue" number="12">12</numbering></numberingGroup><coverDate startDate="2012-12">December 2012</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="10" status="forIssue"><doi origin="wiley">10.1111/fwb.12026</doi><idGroup><id type="unit" value="FWB12026"></id></idGroup><countGroup><count type="pageTotal" number="11"></count></countGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><copyright>© 2012 Blackwell Publishing Ltd</copyright><eventGroup><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:3.1.9 mode:FullText" date="2012-10-22"></event><event type="publishedOnlineEarlyUnpaginated" date="2012-10-11"></event><event type="firstOnline" date="2012-10-11"></event><event type="publishedOnlineFinalForm" date="2012-10-22"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-26"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.3.4 mode:FullText" date="2015-02-25"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="2539">2539</numbering><numbering type="pageLast" number="2549">2549</numbering></numberingGroup><correspondenceTo>Luisa Fernanda Ricaurte, Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland.
E‐mail: <email>luisa.ricaurte@eawag.ch</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:FWB.FWB12026.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>(Manuscript accepted 28 August 2012)</unparsedEditorialHistory><countGroup><count type="figureTotal" number="6"></count><count type="tableTotal" number="4"></count></countGroup><titleGroup><title type="main">The distribution and environmental state of vegetated islands within human‐impacted European rivers</title><title type="shortAuthors"><i>L.F. Ricaurte</i> et al.</title><title type="short"><i>Vegetated islands in European rivers</i></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1 #a2"><personName><givenNames>LUISA FERNANDA</givenNames><familyName>RICAURTE</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>SARAH</givenNames><familyName>BOESCH</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1 #a2"><personName><givenNames>JUKKA</givenNames><familyName>JOKELA</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a3 #a4"><personName><givenNames>KLEMENT</givenNames><familyName>TOCKNER</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="CH"><unparsedAffiliation>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="CH"><unparsedAffiliation>ETH‐Zurich, IBZ, Institute of Integrative Biology, Zurich, Switzerland</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="DE"><unparsedAffiliation>Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany</unparsedAffiliation></affiliation><affiliation xml:id="a4" countryCode="DE"><unparsedAffiliation>Institute of Biology, Freie Universität, Berlin, Germany</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">biodiversity</keyword><keyword xml:id="k2">conservation</keyword><keyword xml:id="k3">floodplain</keyword><keyword xml:id="k4">fluvial dynamics</keyword><keyword xml:id="k5">landscape</keyword><keyword xml:id="k6">management</keyword></keywordGroup><supportingInformation><p><b>Table S1</b>. Detailed list of the Landsat 7 ETM+ satellite images used in this study.</p><p>As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer‐reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors.</p><supportingInfoItem><mediaResource alt="supporting info item" href="urn-x:wiley:00465070:media:fwb12026:FWB_12026_sm_TableS1"></mediaResource><caption>Supporting info item</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary</title><p>1. Vegetated islands within river corridors are pivotal landscape features and are among the first to disappear as a consequence of flow regulation and channelisation. However, how vegetated islands vary along human‐impacted rivers is poorly understood.</p><p>2. We carried out a detailed analysis of the contemporary distribution, diversity and environmental state of vegetated islands within 12 human‐impacted European rivers, using 75 Landsat 7 ETM+ satellite images (1999–2002), historical maps, DEM data and landscape metrics. We tested whether channel fragmentation, catchment land use and the environmental state of fringing floodplains determine the spatial patterns of the islands. We also analysed the historical change of islands within selected sections of the Upper Danube, Upper Rhine and Olt rivers.</p><p>3. We identified 2771 islands in the contemporary landscape, varying from 0.06 to 9828 ha. Islands covered up to 21% of the active channel area and contributed up to 32% of the total riparian ecotone length. Island density ranged from 0.06 islands per river‐km (River Sava) to 1.6 islands per river‐km (River Tagliamento). River regulation has led to a marked loss of island density: 94% in the Upper Danube, 93% in the Upper Rhine, and 69% in the Olt. The environmental state of the islands was significantly less altered by human activity than of their fringing floodplains; 93.4% of the vegetated islands exhibited a near‐natural state, while 86% of the fringing floodplains were expansively converted to agricultural and urban land uses.</p><p>4. Our results highlight the ubiquitous presence of vegetated islands, their sensitivity to river regulation and their pivotal role for the future restoration and management of river corridors.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>The distribution and environmental state of vegetated islands within human‐impacted European rivers</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Vegetated islands in European rivers</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>The distribution and environmental state of vegetated islands within human‐impacted European rivers</title></titleInfo><name type="personal"><namePart type="given">LUISA FERNANDA</namePart><namePart type="family">RICAURTE</namePart><affiliation>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</affiliation><affiliation>ETH‐Zurich, IBZ, Institute of Integrative Biology, Zurich, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">SARAH</namePart><namePart type="family">BOESCH</namePart><affiliation>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">JUKKA</namePart><namePart type="family">JOKELA</namePart><affiliation>Department of Aquatic Ecology, EAWAG, Swiss Federal Institute of Aquatic Sciences and Technology, Duebendorf, Switzerland</affiliation><affiliation>ETH‐Zurich, IBZ, Institute of Integrative Biology, Zurich, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">KLEMENT</namePart><namePart type="family">TOCKNER</namePart><affiliation>Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany</affiliation><affiliation>Institute of Biology, Freie Universität, Berlin, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2012-12</dateIssued><edition>(Manuscript accepted 28 August 2012)</edition><copyrightDate encoding="w3cdtf">2012</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">6</extent><extent unit="tables">4</extent></physicalDescription><abstract lang="en">1. Vegetated islands within river corridors are pivotal landscape features and are among the first to disappear as a consequence of flow regulation and channelisation. However, how vegetated islands vary along human‐impacted rivers is poorly understood. 2. We carried out a detailed analysis of the contemporary distribution, diversity and environmental state of vegetated islands within 12 human‐impacted European rivers, using 75 Landsat 7 ETM+ satellite images (1999–2002), historical maps, DEM data and landscape metrics. We tested whether channel fragmentation, catchment land use and the environmental state of fringing floodplains determine the spatial patterns of the islands. We also analysed the historical change of islands within selected sections of the Upper Danube, Upper Rhine and Olt rivers. 3. We identified 2771 islands in the contemporary landscape, varying from 0.06 to 9828 ha. Islands covered up to 21% of the active channel area and contributed up to 32% of the total riparian ecotone length. Island density ranged from 0.06 islands per river‐km (River Sava) to 1.6 islands per river‐km (River Tagliamento). River regulation has led to a marked loss of island density: 94% in the Upper Danube, 93% in the Upper Rhine, and 69% in the Olt. The environmental state of the islands was significantly less altered by human activity than of their fringing floodplains; 93.4% of the vegetated islands exhibited a near‐natural state, while 86% of the fringing floodplains were expansively converted to agricultural and urban land uses. 4. Our results highlight the ubiquitous presence of vegetated islands, their sensitivity to river regulation and their pivotal role for the future restoration and management of river corridors.</abstract><subject lang="en"><genre>keywords</genre><topic>biodiversity</topic><topic>conservation</topic><topic>floodplain</topic><topic>fluvial dynamics</topic><topic>landscape</topic><topic>management</topic></subject><relatedItem type="host"><titleInfo><title>Freshwater Biology</title></titleInfo><genre type="journal">journal</genre><note type="content"> Table S1. Detailed list of the Landsat 7 ETM+ satellite images used in this study. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer‐reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Table S1. Detailed list of the Landsat 7 ETM+ satellite images used in this study. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer‐reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors.Supporting Info Item: Supporting info item - </note><identifier type="ISSN">0046-5070</identifier><identifier type="eISSN">1365-2427</identifier><identifier type="DOI">10.1111/(ISSN)1365-2427</identifier><identifier type="PublisherID">FWB</identifier><part><date>2012</date><detail type="volume"><caption>vol.</caption><number>57</number></detail><detail type="issue"><caption>no.</caption><number>12</number></detail><extent unit="pages"><start>2539</start><end>2549</end><total>11</total></extent></part></relatedItem><identifier type="istex">9A968736B235AB0F7285A2B91188416EED6D8F25</identifier><identifier type="DOI">10.1111/fwb.12026</identifier><identifier type="ArticleID">FWB12026</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2012 Blackwell Publishing Ltd</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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