Estimation of nitrate removal by riparian wetlands and streams in agricultural catchments: effect of discharge and stream order
Identifieur interne : 000C76 ( Istex/Corpus ); précédent : 000C75; suivant : 000C77Estimation of nitrate removal by riparian wetlands and streams in agricultural catchments: effect of discharge and stream order
Auteurs : Olivier Montreuil ; Philippe Merot ; Pierre MarmonierSource :
- Freshwater Biology [ 0046-5070 ] ; 2010-11.
English descriptors
Abstract
1. Assessment of the role of landscape structures such as buffers is a necessary prerequisite for the sustainable management of water resources in an agricultural setting. 2. We monitored nitrate concentrations during interstorm periods at the outlet of 16 subcatchments of different orders within a catchment of 378 km2. We characterised stream network, wetlands, agricultural practices and land cover and identified their relationships with nitrate fluxes and concentrations. 3. Two main factors controlled annual nitrate fluxes: the agricultural nitrogen surplus and the nature of the system comprising the wetland zone and adjoining watercourses. In the latter case, nitrate fluxes were reduced in proportion to the surface area of the riparian wetland and the flowpath distance of fluxes in the stream network. At the scale of the order‐6 stream, 53% of annual nitrate flux during interstorm periods was removed during transfer via the wetland and the river, corresponding to 21.1 kg N ha−1 per year. 4. The influence of the riparian wetland zone/watercourse system increased during periods of low water level, explaining up to 64% of nitrate concentration variation among locations within the river network, but only 9% during periods of high water level. 5. The buffering role was stronger at higher stream orders, and the dependence on stream order was more apparent at low water level, when we observed mean nitrate concentrations in the order‐6 stream that were 47% lower than observed in order‐2 or order‐3 streams.
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DOI: 10.1111/j.1365-2427.2010.02439.x
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ISTEX:61B7DEC63E6B509F64B1BDA3CDB6A650F0680A21Le document en format XML
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Assessment of the role of landscape structures such as buffers is a necessary prerequisite for the sustainable management of water resources in an agricultural setting. 2. We monitored nitrate concentrations during interstorm periods at the outlet of 16 subcatchments of different orders within a catchment of 378 km2. We characterised stream network, wetlands, agricultural practices and land cover and identified their relationships with nitrate fluxes and concentrations. 3. Two main factors controlled annual nitrate fluxes: the agricultural nitrogen surplus and the nature of the system comprising the wetland zone and adjoining watercourses. In the latter case, nitrate fluxes were reduced in proportion to the surface area of the riparian wetland and the flowpath distance of fluxes in the stream network. At the scale of the order‐6 stream, 53% of annual nitrate flux during interstorm periods was removed during transfer via the wetland and the river, corresponding to 21.1 kg N ha−1 per year. 4. The influence of the riparian wetland zone/watercourse system increased during periods of low water level, explaining up to 64% of nitrate concentration variation among locations within the river network, but only 9% during periods of high water level. 5. The buffering role was stronger at higher stream orders, and the dependence on stream order was more apparent at low water level, when we observed mean nitrate concentrations in the order‐6 stream that were 47% lower than observed in order‐2 or order‐3 streams.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>OLIVIER MONTREUIL</name><affiliations><json:string>INRA, UMR 1069 Sol Agro et hydrosystème Spatialisation, CAREN, Rennes, France</json:string><json:string>Agrocampus Ouest, UMR 1069, Sol Agro et hydrosystème Spatialisation, Rennes, France</json:string></affiliations></json:item><json:item><name>PHILIPPE MEROT</name><affiliations><json:string>INRA, UMR 1069 Sol Agro et hydrosystème Spatialisation, CAREN, Rennes, France</json:string><json:string>Agrocampus Ouest, UMR 1069, Sol Agro et hydrosystème Spatialisation, Rennes, France</json:string></affiliations></json:item><json:item><name>PIERRE MARMONIER</name><affiliations><json:string>UMR CNRS 5023, Écologie des Hydrosystèmes Fluviaux, Université Claude Bernard, Villeurbanne Cedex, France</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>buffer</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>denitrification</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>landscape structure</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>scale dependence</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>seasonal variation</value></json:item></subject><articleId><json:string>FWB2439</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>1. Assessment of the role of landscape structures such as buffers is a necessary prerequisite for the sustainable management of water resources in an agricultural setting. 2. We monitored nitrate concentrations during interstorm periods at the outlet of 16 subcatchments of different orders within a catchment of 378 km2. We characterised stream network, wetlands, agricultural practices and land cover and identified their relationships with nitrate fluxes and concentrations. 3. Two main factors controlled annual nitrate fluxes: the agricultural nitrogen surplus and the nature of the system comprising the wetland zone and adjoining watercourses. In the latter case, nitrate fluxes were reduced in proportion to the surface area of the riparian wetland and the flowpath distance of fluxes in the stream network. At the scale of the order‐6 stream, 53% of annual nitrate flux during interstorm periods was removed during transfer via the wetland and the river, corresponding to 21.1 kg N ha−1 per year. 4. The influence of the riparian wetland zone/watercourse system increased during periods of low water level, explaining up to 64% of nitrate concentration variation among locations within the river network, but only 9% during periods of high water level. 5. 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Assessment of the role of landscape structures such as buffers is a necessary prerequisite for the sustainable management of water resources in an agricultural setting. 2. We monitored nitrate concentrations during interstorm periods at the outlet of 16 subcatchments of different orders within a catchment of 378 km2. We characterised stream network, wetlands, agricultural practices and land cover and identified their relationships with nitrate fluxes and concentrations. 3. Two main factors controlled annual nitrate fluxes: the agricultural nitrogen surplus and the nature of the system comprising the wetland zone and adjoining watercourses. In the latter case, nitrate fluxes were reduced in proportion to the surface area of the riparian wetland and the flowpath distance of fluxes in the stream network. At the scale of the order‐6 stream, 53% of annual nitrate flux during interstorm periods was removed during transfer via the wetland and the river, corresponding to 21.1 kg N ha−1 per year. 4. The influence of the riparian wetland zone/watercourse system increased during periods of low water level, explaining up to 64% of nitrate concentration variation among locations within the river network, but only 9% during periods of high water level. 5. The buffering role was stronger at higher stream orders, and the dependence on stream order was more apparent at low water level, when we observed mean nitrate concentrations in the order‐6 stream that were 47% lower than observed in order‐2 or order‐3 streams.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>buffer</term></item><item><term>denitrification</term></item><item><term>landscape structure</term></item><item><term>scale dependence</term></item><item><term>seasonal variation</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2010-11">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/61B7DEC63E6B509F64B1BDA3CDB6A650F0680A21/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="11111"><doi origin="wiley">10.1111/fwb.2010.55.issue-11</doi><numberingGroup><numbering type="journalVolume" number="55">55</numbering><numbering type="journalIssue" number="11">11</numbering></numberingGroup><coverDate startDate="2010-11">November 2010</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="7" status="forIssue"><doi origin="wiley">10.1111/j.1365-2427.2010.02439.x</doi><idGroup><id type="unit" value="FWB2439"></id></idGroup><countGroup><count type="pageTotal" number="14"></count></countGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><copyright>© 2010 Blackwell Publishing Ltd</copyright><eventGroup><event type="firstOnline" date="2010-06-07"></event><event type="publishedOnlineAcceptedOrEarlyUnpaginated" date="2010-06-07"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.25 mode:FullText source:FullText result:FullText" date="2010-11-05"></event><event type="publishedOnlineFinalForm" date="2010-06-07"></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:4.1.7 mode:FullText,remove_FC" date="2014-10-16"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="2305">2305</numbering><numbering type="pageLast" number="2318">2318</numbering></numberingGroup><correspondenceTo>Philippe Merot, INRA, UMR 1069 SAS, 65 rue de Saint‐Brieuc, CS 84215. 35042 Rennes cedex, France. E‐mail: <email>Philippe.merot@rennes.inra.fr</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:FWB.FWB2439.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>(Manuscript accepted 25 March 2010)</unparsedEditorialHistory><countGroup><count type="figureTotal" number="7"></count><count type="tableTotal" number="3"></count></countGroup><titleGroup><title type="main">Estimation of nitrate removal by riparian wetlands and streams in agricultural catchments: effect of discharge and stream order</title><title type="shortAuthors"><i>O. Montreuil</i> et al.</title><title type="short"><i>Nitrate removal in wetlands: effect of discharge and stream order</i></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1 #a2"><personName><givenNames>OLIVIER</givenNames><familyName>MONTREUIL</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1 #a2"><personName><givenNames>PHILIPPE</givenNames><familyName>MEROT</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a3"><personName><givenNames>PIERRE</givenNames><familyName>MARMONIER</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="FR"><unparsedAffiliation>INRA, UMR 1069 Sol Agro et hydrosystème Spatialisation, CAREN, Rennes, France</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="FR"><unparsedAffiliation>Agrocampus Ouest, UMR 1069, Sol Agro et hydrosystème Spatialisation, Rennes, France</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="FR"><unparsedAffiliation>UMR CNRS 5023, Écologie des Hydrosystèmes Fluviaux, Université Claude Bernard, Villeurbanne Cedex, France</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">buffer</keyword><keyword xml:id="k2">denitrification</keyword><keyword xml:id="k3">landscape structure</keyword><keyword xml:id="k4">scale dependence</keyword><keyword xml:id="k5">seasonal variation</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary</title><p>1. Assessment of the role of landscape structures such as buffers is a necessary prerequisite for the sustainable management of water resources in an agricultural setting.</p><p>2. We monitored nitrate concentrations during interstorm periods at the outlet of 16 subcatchments of different orders within a catchment of 378 km<sup>2</sup>. We characterised stream network, wetlands, agricultural practices and land cover and identified their relationships with nitrate fluxes and concentrations.</p><p>3. Two main factors controlled annual nitrate fluxes: the agricultural nitrogen surplus and the nature of the system comprising the wetland zone and adjoining watercourses. In the latter case, nitrate fluxes were reduced in proportion to the surface area of the riparian wetland and the flowpath distance of fluxes in the stream network. At the scale of the order‐6 stream, 53% of annual nitrate flux during interstorm periods was removed during transfer via the wetland and the river, corresponding to 21.1 kg N ha<sup>−1</sup> per year.</p><p>4. The influence of the riparian wetland zone/watercourse system increased during periods of low water level, explaining up to 64% of nitrate concentration variation among locations within the river network, but only 9% during periods of high water level.</p><p>5. The buffering role was stronger at higher stream orders, and the dependence on stream order was more apparent at low water level, when we observed mean nitrate concentrations in the order‐6 stream that were 47% lower than observed in order‐2 or order‐3 streams.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Estimation of nitrate removal by riparian wetlands and streams in agricultural catchments: effect of discharge and stream order</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Nitrate removal in wetlands: effect of discharge and stream order</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Estimation of nitrate removal by riparian wetlands and streams in agricultural catchments: effect of discharge and stream order</title></titleInfo><name type="personal"><namePart type="given">OLIVIER</namePart><namePart type="family">MONTREUIL</namePart><affiliation>INRA, UMR 1069 Sol Agro et hydrosystème Spatialisation, CAREN, Rennes, France</affiliation><affiliation>Agrocampus Ouest, UMR 1069, Sol Agro et hydrosystème Spatialisation, Rennes, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">PHILIPPE</namePart><namePart type="family">MEROT</namePart><affiliation>INRA, UMR 1069 Sol Agro et hydrosystème Spatialisation, CAREN, Rennes, France</affiliation><affiliation>Agrocampus Ouest, UMR 1069, Sol Agro et hydrosystème Spatialisation, Rennes, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">PIERRE</namePart><namePart type="family">MARMONIER</namePart><affiliation>UMR CNRS 5023, Écologie des Hydrosystèmes Fluviaux, Université Claude Bernard, Villeurbanne Cedex, France</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">2010-11</dateIssued><edition>(Manuscript accepted 25 March 2010)</edition><copyrightDate encoding="w3cdtf">2010</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">7</extent><extent unit="tables">3</extent></physicalDescription><abstract lang="en">1. Assessment of the role of landscape structures such as buffers is a necessary prerequisite for the sustainable management of water resources in an agricultural setting. 2. We monitored nitrate concentrations during interstorm periods at the outlet of 16 subcatchments of different orders within a catchment of 378 km2. We characterised stream network, wetlands, agricultural practices and land cover and identified their relationships with nitrate fluxes and concentrations. 3. Two main factors controlled annual nitrate fluxes: the agricultural nitrogen surplus and the nature of the system comprising the wetland zone and adjoining watercourses. In the latter case, nitrate fluxes were reduced in proportion to the surface area of the riparian wetland and the flowpath distance of fluxes in the stream network. At the scale of the order‐6 stream, 53% of annual nitrate flux during interstorm periods was removed during transfer via the wetland and the river, corresponding to 21.1 kg N ha−1 per year. 4. The influence of the riparian wetland zone/watercourse system increased during periods of low water level, explaining up to 64% of nitrate concentration variation among locations within the river network, but only 9% during periods of high water level. 5. The buffering role was stronger at higher stream orders, and the dependence on stream order was more apparent at low water level, when we observed mean nitrate concentrations in the order‐6 stream that were 47% lower than observed in order‐2 or order‐3 streams.</abstract><subject lang="en"><genre>keywords</genre><topic>buffer</topic><topic>denitrification</topic><topic>landscape structure</topic><topic>scale dependence</topic><topic>seasonal variation</topic></subject><relatedItem type="host"><titleInfo><title>Freshwater Biology</title></titleInfo><genre type="journal">journal</genre><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>2010</date><detail type="volume"><caption>vol.</caption><number>55</number></detail><detail type="issue"><caption>no.</caption><number>11</number></detail><extent unit="pages"><start>2305</start><end>2318</end><total>14</total></extent></part></relatedItem><identifier type="istex">61B7DEC63E6B509F64B1BDA3CDB6A650F0680A21</identifier><identifier type="DOI">10.1111/j.1365-2427.2010.02439.x</identifier><identifier type="ArticleID">FWB2439</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2010 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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