Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?
Identifieur interne : 001230 ( Istex/Corpus ); précédent : 001229; suivant : 001231Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?
Auteurs : E. A. Mora ; S. T. Lindley ; D. L. Erickson ; A. P. KlimleySource :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 2009-10.
Abstract
Conservation of the threatened green sturgeon Acipenser medirostris in the Sacramento River of California is impeded by lack of information on its historical distribution and an understanding of how impassable dams and altered hydrographs are influencing its distribution. The habitat preferences of green sturgeon are characterized in terms of river discharge, velocity, channel gradient, and air temperature associated with 2590 sightings of green sturgeon in the Klamath and Rogue rivers using the Mahalanobis distance D2, a multivariate measure of distance from the mean habitat conditions associated with the sightings. D2 was then calculated for reaches of the Sacramento and San Joaquin rivers and their tributaries under historic and current (2007) hydrographs to assess where and when habitat conditions in the Sacramento–San Joaquin basin are similar to those known to support green sturgeon. The model for current habitat conditions was validated with observations of acoustically‐tagged green sturgeon at large in the basin in 2007. The model predicts that in the absence of impassable dams and altered hydrographs, green sturgeon would utilize the mainstem Sacramento and San Joaquin rivers, and several major tributaries including portions of the lower Feather River, American River, and Yuba River. While dams block access to about 9% of historically available habitat, it is likely that the blocked areas contained relatively high amounts of spawning habitat because of their upstream position in the river network. Flow regulation below the reservoirs has mixed effects on habitat suitability for green sturgeon, with many reaches showing increased suitability in winter and spring, but with some reaches showing decreased suitability in many months, particularly late spring through early autumn. Overall, it appears that the main effect of construction of large water‐storage reservoirs in the Sacramento–San Joaquin river basin has been to curtail the distribution of green sturgeon within this basin.
Url:
DOI: 10.1111/j.1439-0426.2009.01297.x
Links to Exploration step
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Mora</name><affiliation><mods:affiliation>Joint Institute for Marine Observations, UC Santa Cruz, Santa Cruz, CA, USA</mods:affiliation></affiliation></author><author><name sortKey="Lindley, S T" sort="Lindley, S T" uniqKey="Lindley S" first="S. T." last="Lindley">S. T. Lindley</name><affiliation><mods:affiliation>Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA, USA</mods:affiliation></affiliation></author><author><name sortKey="Erickson, D L" sort="Erickson, D L" uniqKey="Erickson D" first="D. L." last="Erickson">D. L. Erickson</name><affiliation><mods:affiliation>Pew Institute for Ocean Science, Rosenstiel School of marine and Atmospheric Science, University of Miami, Miami, FL, USA</mods:affiliation></affiliation></author><author><name sortKey="Klimley, A P" sort="Klimley, A P" uniqKey="Klimley A" first="A. P." last="Klimley">A. P. Klimley</name><affiliation><mods:affiliation>Department of Wildlife, Fish, & Conservation Biology, University of California, Davis, CA, USA</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Applied Ichthyology</title><idno type="ISSN">0175-8659</idno><idno type="eISSN">1439-0426</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-10">2009-10</date><biblScope unit="volume">25</biblScope><biblScope unit="supplement">s2</biblScope><biblScope unit="page" from="39">39</biblScope><biblScope unit="page" to="47">47</biblScope></imprint><idno type="ISSN">0175-8659</idno></series><idno type="istex">AC202B48F31E491401EE55DD90DE0FD25F872546</idno><idno type="DOI">10.1111/j.1439-0426.2009.01297.x</idno><idno type="ArticleID">JAI1297</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0175-8659</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Conservation of the threatened green sturgeon Acipenser medirostris in the Sacramento River of California is impeded by lack of information on its historical distribution and an understanding of how impassable dams and altered hydrographs are influencing its distribution. The habitat preferences of green sturgeon are characterized in terms of river discharge, velocity, channel gradient, and air temperature associated with 2590 sightings of green sturgeon in the Klamath and Rogue rivers using the Mahalanobis distance D2, a multivariate measure of distance from the mean habitat conditions associated with the sightings. D2 was then calculated for reaches of the Sacramento and San Joaquin rivers and their tributaries under historic and current (2007) hydrographs to assess where and when habitat conditions in the Sacramento–San Joaquin basin are similar to those known to support green sturgeon. The model for current habitat conditions was validated with observations of acoustically‐tagged green sturgeon at large in the basin in 2007. The model predicts that in the absence of impassable dams and altered hydrographs, green sturgeon would utilize the mainstem Sacramento and San Joaquin rivers, and several major tributaries including portions of the lower Feather River, American River, and Yuba River. While dams block access to about 9% of historically available habitat, it is likely that the blocked areas contained relatively high amounts of spawning habitat because of their upstream position in the river network. Flow regulation below the reservoirs has mixed effects on habitat suitability for green sturgeon, with many reaches showing increased suitability in winter and spring, but with some reaches showing decreased suitability in many months, particularly late spring through early autumn. Overall, it appears that the main effect of construction of large water‐storage reservoirs in the Sacramento–San Joaquin river basin has been to curtail the distribution of green sturgeon within this basin.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>E. A. Mora</name><affiliations><json:string>Joint Institute for Marine Observations, UC Santa Cruz, Santa Cruz, CA, USA</json:string></affiliations></json:item><json:item><name>S. T. Lindley</name><affiliations><json:string>Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA, USA</json:string></affiliations></json:item><json:item><name>D. L. Erickson</name><affiliations><json:string>Pew Institute for Ocean Science, Rosenstiel School of marine and Atmospheric Science, University of Miami, Miami, FL, USA</json:string></affiliations></json:item><json:item><name>A. P. Klimley</name><affiliations><json:string>Department of Wildlife, Fish, & Conservation Biology, University of California, Davis, CA, USA</json:string></affiliations></json:item></author><articleId><json:string>JAI1297</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Conservation of the threatened green sturgeon Acipenser medirostris in the Sacramento River of California is impeded by lack of information on its historical distribution and an understanding of how impassable dams and altered hydrographs are influencing its distribution. The habitat preferences of green sturgeon are characterized in terms of river discharge, velocity, channel gradient, and air temperature associated with 2590 sightings of green sturgeon in the Klamath and Rogue rivers using the Mahalanobis distance D2, a multivariate measure of distance from the mean habitat conditions associated with the sightings. D2 was then calculated for reaches of the Sacramento and San Joaquin rivers and their tributaries under historic and current (2007) hydrographs to assess where and when habitat conditions in the Sacramento–San Joaquin basin are similar to those known to support green sturgeon. The model for current habitat conditions was validated with observations of acoustically‐tagged green sturgeon at large in the basin in 2007. The model predicts that in the absence of impassable dams and altered hydrographs, green sturgeon would utilize the mainstem Sacramento and San Joaquin rivers, and several major tributaries including portions of the lower Feather River, American River, and Yuba River. While dams block access to about 9% of historically available habitat, it is likely that the blocked areas contained relatively high amounts of spawning habitat because of their upstream position in the river network. Flow regulation below the reservoirs has mixed effects on habitat suitability for green sturgeon, with many reaches showing increased suitability in winter and spring, but with some reaches showing decreased suitability in many months, particularly late spring through early autumn. 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Journal compilation © 2009 Blackwell Verlag GmbH</p></availability><date>2009</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?</title><author xml:id="author-1"><persName><forename type="first">E. A.</forename><surname>Mora</surname></persName><affiliation>Joint Institute for Marine Observations, UC Santa Cruz, Santa Cruz, CA, USA</affiliation></author><author xml:id="author-2"><persName><forename type="first">S. T.</forename><surname>Lindley</surname></persName><affiliation>Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA, USA</affiliation></author><author xml:id="author-3"><persName><forename type="first">D. 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P.</forename><surname>Klimley</surname></persName><affiliation>Department of Wildlife, Fish, & Conservation Biology, University of California, Davis, CA, USA</affiliation></author></analytic><monogr><title level="j">Journal of Applied Ichthyology</title><idno type="pISSN">0175-8659</idno><idno type="eISSN">1439-0426</idno><idno type="DOI">10.1111/(ISSN)1439-0426</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-10"></date><biblScope unit="volume">25</biblScope><biblScope unit="supplement">s2</biblScope><biblScope unit="page" from="39">39</biblScope><biblScope unit="page" to="47">47</biblScope></imprint></monogr><idno type="istex">AC202B48F31E491401EE55DD90DE0FD25F872546</idno><idno type="DOI">10.1111/j.1439-0426.2009.01297.x</idno><idno type="ArticleID">JAI1297</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2009</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Conservation of the threatened green sturgeon Acipenser medirostris in the Sacramento River of California is impeded by lack of information on its historical distribution and an understanding of how impassable dams and altered hydrographs are influencing its distribution. The habitat preferences of green sturgeon are characterized in terms of river discharge, velocity, channel gradient, and air temperature associated with 2590 sightings of green sturgeon in the Klamath and Rogue rivers using the Mahalanobis distance D2, a multivariate measure of distance from the mean habitat conditions associated with the sightings. D2 was then calculated for reaches of the Sacramento and San Joaquin rivers and their tributaries under historic and current (2007) hydrographs to assess where and when habitat conditions in the Sacramento–San Joaquin basin are similar to those known to support green sturgeon. The model for current habitat conditions was validated with observations of acoustically‐tagged green sturgeon at large in the basin in 2007. The model predicts that in the absence of impassable dams and altered hydrographs, green sturgeon would utilize the mainstem Sacramento and San Joaquin rivers, and several major tributaries including portions of the lower Feather River, American River, and Yuba River. While dams block access to about 9% of historically available habitat, it is likely that the blocked areas contained relatively high amounts of spawning habitat because of their upstream position in the river network. Flow regulation below the reservoirs has mixed effects on habitat suitability for green sturgeon, with many reaches showing increased suitability in winter and spring, but with some reaches showing decreased suitability in many months, particularly late spring through early autumn. Overall, it appears that the main effect of construction of large water‐storage reservoirs in the Sacramento–San Joaquin river basin has been to curtail the distribution of green sturgeon within this basin.</p></abstract></profileDesc><revisionDesc><change when="2009-10">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/AC202B48F31E491401EE55DD90DE0FD25F872546/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)1439-0426</doi><issn type="print">0175-8659</issn><issn type="electronic">1439-0426</issn><idGroup><id type="product" value="JAI"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF APPLIED ICHTHYOLOGY">Journal of Applied Ichthyology</title></titleGroup></publicationMeta><publicationMeta level="part" position="10000"><doi origin="wiley">10.1111/jai.2009.25.issue-s2</doi><titleGroup><title type="specialIssueTitle">Proceedings of the Inaugural Meeting of the North American Chapter of the World Sturgeon Conservation Society, Ottawa, Canada, August 19‐21, 2008</title></titleGroup><numberingGroup><numbering type="journalVolume" number="25">25</numbering><numbering type="supplement">s2</numbering></numberingGroup><coverDate startDate="2009-10">October 2009</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="8" status="forIssue"><doi origin="wiley">10.1111/j.1439-0426.2009.01297.x</doi><idGroup><id type="unit" value="JAI1297"></id></idGroup><countGroup><count type="pageTotal" number="13"></count></countGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><copyright>No claim to original US government works. Journal compilation © 2009 Blackwell Verlag GmbH</copyright><eventGroup><event type="firstOnline" date="2009-09-01"></event><event type="publishedOnlineFinalForm" date="2009-09-01"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:FullText result:FullText" date="2010-03-15"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-28"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-23"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="39">39</numbering><numbering type="pageLast" number="47">47</numbering></numberingGroup><correspondenceTo><b>Author’s address: </b> Steven T. Lindley, Southwest Fisheries Science Center, National Marine Fisheries Service, 110 Shaffer Road, Santa Cruz, CA 95060, USA.
E‐mail: <email>steve.lindley@noaa.gov</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JAI.JAI1297.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received: December 1, 2008 Accepted: February 21, 2009</unparsedEditorialHistory><countGroup><count type="figureTotal" number="5"></count><count type="tableTotal" number="1"></count></countGroup><titleGroup><title type="main">Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?</title><title type="shortAuthors">E. A. Mora et al.</title><title type="short">Do impassable dams and flow regulation constrain the distribution of green sturgeon</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>E. A.</givenNames><familyName>Mora</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>S. T.</givenNames><familyName>Lindley</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a3"><personName><givenNames>D. L.</givenNames><familyName>Erickson</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a4"><personName><givenNames>A. P.</givenNames><familyName>Klimley</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="US"><unparsedAffiliation>Joint Institute for Marine Observations, UC Santa Cruz, Santa Cruz, CA, USA</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="US"><unparsedAffiliation>Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA, USA</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="US"><unparsedAffiliation>Pew Institute for Ocean Science, Rosenstiel School of marine and Atmospheric Science, University of Miami, Miami, FL, USA</unparsedAffiliation></affiliation><affiliation xml:id="a4" countryCode="US"><unparsedAffiliation>Department of Wildlife, Fish, & Conservation Biology, University of California, Davis, CA, USA</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary</title><p>Conservation of the threatened green sturgeon <i>Acipenser medirostris</i> in the Sacramento River of California is impeded by lack of information on its historical distribution and an understanding of how impassable dams and altered hydrographs are influencing its distribution. The habitat preferences of green sturgeon are characterized in terms of river discharge, velocity, channel gradient, and air temperature associated with 2590 sightings of green sturgeon in the Klamath and Rogue rivers using the Mahalanobis distance <i>D</i><sup>2</sup>, a multivariate measure of distance from the mean habitat conditions associated with the sightings. <i>D</i><sup>2</sup> was then calculated for reaches of the Sacramento and San Joaquin rivers and their tributaries under historic and current (2007) hydrographs to assess where and when habitat conditions in the Sacramento–San Joaquin basin are similar to those known to support green sturgeon. The model for current habitat conditions was validated with observations of acoustically‐tagged green sturgeon at large in the basin in 2007. The model predicts that in the absence of impassable dams and altered hydrographs, green sturgeon would utilize the mainstem Sacramento and San Joaquin rivers, and several major tributaries including portions of the lower Feather River, American River, and Yuba River. While dams block access to about 9% of historically available habitat, it is likely that the blocked areas contained relatively high amounts of spawning habitat because of their upstream position in the river network. Flow regulation below the reservoirs has mixed effects on habitat suitability for green sturgeon, with many reaches showing increased suitability in winter and spring, but with some reaches showing decreased suitability in many months, particularly late spring through early autumn. Overall, it appears that the main effect of construction of large water‐storage reservoirs in the Sacramento–San Joaquin river basin has been to curtail the distribution of green sturgeon within this basin.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Do impassable dams and flow regulation constrain the distribution of green sturgeon</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?</title></titleInfo><name type="personal"><namePart type="given">E. A.</namePart><namePart type="family">Mora</namePart><affiliation>Joint Institute for Marine Observations, UC Santa Cruz, Santa Cruz, CA, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. T.</namePart><namePart type="family">Lindley</namePart><affiliation>Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. L.</namePart><namePart type="family">Erickson</namePart><affiliation>Pew Institute for Ocean Science, Rosenstiel School of marine and Atmospheric Science, University of Miami, Miami, FL, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A. P.</namePart><namePart type="family">Klimley</namePart><affiliation>Department of Wildlife, Fish, & Conservation Biology, University of California, Davis, CA, USA</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">2009-10</dateIssued><edition>Received: December 1, 2008 Accepted: February 21, 2009</edition><copyrightDate encoding="w3cdtf">2009</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">5</extent><extent unit="tables">1</extent></physicalDescription><abstract lang="en">Conservation of the threatened green sturgeon Acipenser medirostris in the Sacramento River of California is impeded by lack of information on its historical distribution and an understanding of how impassable dams and altered hydrographs are influencing its distribution. The habitat preferences of green sturgeon are characterized in terms of river discharge, velocity, channel gradient, and air temperature associated with 2590 sightings of green sturgeon in the Klamath and Rogue rivers using the Mahalanobis distance D2, a multivariate measure of distance from the mean habitat conditions associated with the sightings. D2 was then calculated for reaches of the Sacramento and San Joaquin rivers and their tributaries under historic and current (2007) hydrographs to assess where and when habitat conditions in the Sacramento–San Joaquin basin are similar to those known to support green sturgeon. The model for current habitat conditions was validated with observations of acoustically‐tagged green sturgeon at large in the basin in 2007. The model predicts that in the absence of impassable dams and altered hydrographs, green sturgeon would utilize the mainstem Sacramento and San Joaquin rivers, and several major tributaries including portions of the lower Feather River, American River, and Yuba River. While dams block access to about 9% of historically available habitat, it is likely that the blocked areas contained relatively high amounts of spawning habitat because of their upstream position in the river network. Flow regulation below the reservoirs has mixed effects on habitat suitability for green sturgeon, with many reaches showing increased suitability in winter and spring, but with some reaches showing decreased suitability in many months, particularly late spring through early autumn. Overall, it appears that the main effect of construction of large water‐storage reservoirs in the Sacramento–San Joaquin river basin has been to curtail the distribution of green sturgeon within this basin.</abstract><relatedItem type="host"><titleInfo><title>Journal of Applied Ichthyology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0175-8659</identifier><identifier type="eISSN">1439-0426</identifier><identifier type="DOI">10.1111/(ISSN)1439-0426</identifier><identifier type="PublisherID">JAI</identifier><part><date>2009</date><detail type="title"><title>Proceedings of the Inaugural Meeting of the North American Chapter of the World Sturgeon Conservation Society, Ottawa, Canada, August 19‐21, 2008</title></detail><detail type="volume"><caption>vol.</caption><number>25</number></detail><detail type="supplement"><caption>Suppl. no.</caption><number>s2</number></detail><extent unit="pages"><start>39</start><end>47</end><total>13</total></extent></part></relatedItem><identifier type="istex">AC202B48F31E491401EE55DD90DE0FD25F872546</identifier><identifier type="DOI">10.1111/j.1439-0426.2009.01297.x</identifier><identifier type="ArticleID">JAI1297</identifier><accessCondition type="use and reproduction" contentType="copyright">No claim to original US government works. 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