WATER QUALITY IN AGRICULTURAL WATERSHEDS: IMPACT OF RIPARIAN VEGETATION DURING BASE FLOW
Identifieur interne : 000409 ( Istex/Corpus ); précédent : 000408; suivant : 000410WATER QUALITY IN AGRICULTURAL WATERSHEDS: IMPACT OF RIPARIAN VEGETATION DURING BASE FLOW
Auteurs : Isaac J. Schlosser ; James R. KarrSource :
- JAWRA Journal of the American Water Resources Association [ 1093-474X ] ; 1981-04.
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- KwdEn :
Abstract
ABSTRACT: Water quality was monitored for 17 months during base flow periods in six agricultural watersheds to evaluate the impact of riparian vegetation on suspended solids and nutrient concentrations. In areas without riparian vegetation, both instream algal production and seasonal low flows appeared to be major determinants of suspended solids, turbidity, and phosphorus concentrations. Peak levels of all parameters were reached during the summer when flows were reduced and benthic algal production was high. Similar summer peaks were reached in streams receiving major point inputs but peaks occurred downstream from the input. Instream organic production was less important in regulating water quality in areas with riparian vegetation and permanent flows. Concentrations of suspended solids remained relatively constant, while phosphorus and turbidity increased in association with leaf fall in autumn. Intermittent flow conditions in summer increased the importance of instream organic production in controlling water quality, even when riparian vegetation was present. Efforts to improve water quality in agricultural watersheds during base flow should emphasize maintenance of riparian vegetation and stable flow conditions.
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DOI: 10.1111/j.1752-1688.1981.tb03927.x
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Schlosser</name><affiliation><mods:affiliation>Respectively, Doctoral Candidate and Professor, University of Illinois, Vivarium Building, Healey and Wright Streets, Champaign, Illinois 61820.</mods:affiliation></affiliation></author><author><name sortKey="Karr, James R" sort="Karr, James R" uniqKey="Karr J" first="James R." last="Karr">James R. 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In areas without riparian vegetation, both instream algal production and seasonal low flows appeared to be major determinants of suspended solids, turbidity, and phosphorus concentrations. Peak levels of all parameters were reached during the summer when flows were reduced and benthic algal production was high. Similar summer peaks were reached in streams receiving major point inputs but peaks occurred downstream from the input. Instream organic production was less important in regulating water quality in areas with riparian vegetation and permanent flows. Concentrations of suspended solids remained relatively constant, while phosphorus and turbidity increased in association with leaf fall in autumn. Intermittent flow conditions in summer increased the importance of instream organic production in controlling water quality, even when riparian vegetation was present. 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In areas without riparian vegetation, both instream algal production and seasonal low flows appeared to be major determinants of suspended solids, turbidity, and phosphorus concentrations. Peak levels of all parameters were reached during the summer when flows were reduced and benthic algal production was high. Similar summer peaks were reached in streams receiving major point inputs but peaks occurred downstream from the input. Instream organic production was less important in regulating water quality in areas with riparian vegetation and permanent flows. Concentrations of suspended solids remained relatively constant, while phosphorus and turbidity increased in association with leaf fall in autumn. Intermittent flow conditions in summer increased the importance of instream organic production in controlling water quality, even when riparian vegetation was present. Efforts to improve water quality in agricultural watersheds during base flow should emphasize maintenance of riparian vegetation and stable flow conditions.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1"><label>1</label><p>Paper No. 80103 of the <i>Water Resources Bulletin</i>. Discussions are open until December 1, 1981.</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>WATER QUALITY IN AGRICULTURAL WATERSHEDS: IMPACT OF RIPARIAN VEGETATION DURING BASE FLOW</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>WATER QUALITY IN AGRICULTURAL WATERSHEDS: IMPACT OF RIPARIAN VEGETATION DURING BASE FLOW1</title></titleInfo><name type="personal"><namePart type="given">Isaac J.</namePart><namePart type="family">Schlosser</namePart><affiliation>Respectively, Doctoral Candidate and Professor, University of Illinois, Vivarium Building, Healey and Wright Streets, Champaign, Illinois 61820.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">James R.</namePart><namePart type="family">Karr</namePart><affiliation>Respectively, Doctoral Candidate and Professor, University of Illinois, Vivarium Building, Healey and Wright Streets, Champaign, Illinois 61820.</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">1981-04</dateIssued><copyrightDate encoding="w3cdtf">1981</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="references">23</extent></physicalDescription><abstract>ABSTRACT: Water quality was monitored for 17 months during base flow periods in six agricultural watersheds to evaluate the impact of riparian vegetation on suspended solids and nutrient concentrations. In areas without riparian vegetation, both instream algal production and seasonal low flows appeared to be major determinants of suspended solids, turbidity, and phosphorus concentrations. Peak levels of all parameters were reached during the summer when flows were reduced and benthic algal production was high. Similar summer peaks were reached in streams receiving major point inputs but peaks occurred downstream from the input. Instream organic production was less important in regulating water quality in areas with riparian vegetation and permanent flows. Concentrations of suspended solids remained relatively constant, while phosphorus and turbidity increased in association with leaf fall in autumn. Intermittent flow conditions in summer increased the importance of instream organic production in controlling water quality, even when riparian vegetation was present. Efforts to improve water quality in agricultural watersheds during base flow should emphasize maintenance of riparian vegetation and stable flow conditions.</abstract><note type="content">*Paper No. 80103 of the Water Resources Bulletin. Discussions are open until December 1, 1981.</note><subject lang="en"><genre>keywords</genre><topic>agricultural wateshed</topic><topic>water quality</topic><topic>riparian vegetation</topic><topic>seasonality</topic><topic>base flow</topic><topic>suspended solids</topic><topic>nutrients</topic></subject><relatedItem type="host"><titleInfo><title>JAWRA Journal of the American Water Resources Association</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">1093-474X</identifier><identifier type="eISSN">1752-1688</identifier><identifier type="DOI">10.1111/(ISSN)1752-1688</identifier><identifier type="PublisherID">JAWR</identifier><part><date>1981</date><detail type="volume"><caption>vol.</caption><number>17</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>233</start><end>240</end><total>8</total></extent></part></relatedItem><identifier type="istex">99E79F1F3EE2BBD388EDB7A8F03B81F31768685D</identifier><identifier type="DOI">10.1111/j.1752-1688.1981.tb03927.x</identifier><identifier type="ArticleID">JAWR233</identifier><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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