Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem
Identifieur interne : 001670 ( Istex/Corpus ); précédent : 001669; suivant : 001671Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem
Auteurs : Mark O. GessnerSource :
- Freshwater Biology [ 0046-5070 ] ; 1991-12.
Abstract
SUMMARY. 1. Although the bulk of litter input to stream ecosystems is in the form of fresh leaves, current understanding of organic matter processing is largely founded on experimental studies made with pre‐dried leaves. This paradox points to the critical need for evaluating to what extent those experiments with dried leaves reflect natural litter decomposition.
Url:
DOI: 10.1111/j.1365-2427.1991.tb01406.x
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ISTEX:A62257A3C08AB8CA22C03CFBCBAE50D842B84700Le document en format XML
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Although the bulk of litter input to stream ecosystems is in the form of fresh leaves, current understanding of organic matter processing is largely founded on experimental studies made with pre‐dried leaves. This paradox points to the critical need for evaluating to what extent those experiments with dried leaves reflect natural litter decomposition.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>MARK O. 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Systat Inc., Evanston , IL .</title></host></json:item></refBibs><genre><json:string>article</json:string></genre><host><volume>26</volume><publisherId><json:string>FWB</json:string></publisherId><pages><total>12</total><last>398</last><first>387</first></pages><issn><json:string>0046-5070</json:string></issn><issue>3</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1365-2427</json:string></eissn><title>Freshwater Biology</title><doi><json:string>10.1111/(ISSN)1365-2427</json:string></doi></host><categories><wos><json:string>science</json:string><json:string>marine & freshwater biology</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>biology</json:string><json:string>marine biology & hydrobiology</json:string></scienceMetrix></categories><publicationDate>1991</publicationDate><copyrightDate>1991</copyrightDate><doi><json:string>10.1111/j.1365-2427.1991.tb01406.x</json:string></doi><id>A62257A3C08AB8CA22C03CFBCBAE50D842B84700</id><score>0.17652729</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/A62257A3C08AB8CA22C03CFBCBAE50D842B84700/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/A62257A3C08AB8CA22C03CFBCBAE50D842B84700/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/A62257A3C08AB8CA22C03CFBCBAE50D842B84700/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><availability><p>WILEY</p></availability><date>1991</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem</title><author xml:id="author-1"><persName><forename type="first">MARK O.</forename><surname>GESSNER</surname></persName><affiliation>Centre of Ecologie des Ressources Renouvelables, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex, France</affiliation></author></analytic><monogr><title level="j">Freshwater Biology</title><idno type="pISSN">0046-5070</idno><idno type="eISSN">1365-2427</idno><idno type="DOI">10.1111/(ISSN)1365-2427</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1991-12"></date><biblScope unit="volume">26</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="387">387</biblScope><biblScope unit="page" to="398">398</biblScope></imprint></monogr><idno type="istex">A62257A3C08AB8CA22C03CFBCBAE50D842B84700</idno><idno type="DOI">10.1111/j.1365-2427.1991.tb01406.x</idno><idno type="ArticleID">FWB387</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1991</date></creation><langUsage><language ident="en">en</language></langUsage><abstract><p>SUMMARY. 1. Although the bulk of litter input to stream ecosystems is in the form of fresh leaves, current understanding of organic matter processing is largely founded on experimental studies made with pre‐dried leaves. This paradox points to the critical need for evaluating to what extent those experiments with dried leaves reflect natural litter decomposition.</p></abstract><abstract><p>2. The mass loss rates, patterns of mass loss, and chemical changes during processing of fresh leaf litter were compared with air‐dried leaf litter in a stream ecosystem.</p></abstract><abstract><p>3. Although overall mass loss rates were similar between treatments (k= 0.0213 day−1 and 0.0206 day−1), fresh leaves lost mass at a constant rate, whereas the decay of dried leaves proceeded in two distinct phases. Soluble organic carbon, phosphorus, and potassium were rapidly leached from dried litter, but were largely retained in fresh material for more than a week. Kinetics of concentrations of cellulose and changes in amounts of lignin remaining per leaf pack revealed further differences in decomposition dynamics between treatments, apparently related, either directly or indirectly, to differences in leaching behaviour.</p></abstract><abstract><p>4. Dynamics of nitrogen and protein contents were similar between treatments, indicating that microbial colonization was not greatly delayed on fresh leaves.</p></abstract><abstract><p>5. It is concluded that the retention of labile carbon and nutrients in fresh leaf litter facilitates their utilization by leaf‐associated micro‐organisms and invertebrates, resulting in an increased importance of biotic processes relative to physical processes such as leaching.</p></abstract><abstract><p>6. At the ecosystem level, retention of carbon and nutrients in streams would be increased, allowing greater overall productivity. Conversely, the availability of labile organic carbon would be reduced in compartments such as the epilithon, fine sediments, and the water column.</p></abstract></profileDesc><revisionDesc><change when="1991-12">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/A62257A3C08AB8CA22C03CFBCBAE50D842B84700/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="12003"><doi origin="wiley">10.1111/fwb.1991.26.issue-3</doi><numberingGroup><numbering type="journalVolume" number="26">26</numbering><numbering type="journalIssue" number="3">3</numbering></numberingGroup><coverDate startDate="1991-12">December 1991</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0038700" status="forIssue"><doi origin="wiley">10.1111/j.1365-2427.1991.tb01406.x</doi><idGroup><id type="unit" value="FWB387"></id></idGroup><countGroup><count type="pageTotal" number="12"></count></countGroup><eventGroup><event type="firstOnline" date="2006-05-29"></event><event type="publishedOnlineFinalForm" date="2006-05-29"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.5 mode:FullText source:HeaderRef result:HeaderRef" date="2010-04-07"></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="387">387</numbering><numbering type="pageLast" number="398">398</numbering></numberingGroup><linkGroup><link type="toTypesetVersion" href="file:FWB.FWB387.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Manuscript accepted 18 June 1991</unparsedEditorialHistory><countGroup><count type="referenceTotal" number="50"></count><count type="linksCrossRef" number="1"></count></countGroup><titleGroup><title type="main">Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>MARK O.</givenNames><familyName>GESSNER</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="FR"><unparsedAffiliation>Centre of Ecologie des Ressources Renouvelables, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex, France</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><p><b>SUMMARY. </b> 1. Although the bulk of litter input to stream ecosystems is in the form of fresh leaves, current understanding of organic matter processing is largely founded on experimental studies made with pre‐dried leaves. This paradox points to the critical need for evaluating to what extent those experiments with dried leaves reflect natural litter decomposition.</p><p>2. The mass loss rates, patterns of mass loss, and chemical changes during processing of fresh leaf litter were compared with air‐dried leaf litter in a stream ecosystem.</p><p>3. Although overall mass loss rates were similar between treatments (<i>k</i>= 0.0213 day<sup>−1</sup> and 0.0206 day<sup>−1</sup>), fresh leaves lost mass at a constant rate, whereas the decay of dried leaves proceeded in two distinct phases. Soluble organic carbon, phosphorus, and potassium were rapidly leached from dried litter, but were largely retained in fresh material for more than a week. Kinetics of concentrations of cellulose and changes in amounts of lignin remaining per leaf pack revealed further differences in decomposition dynamics between treatments, apparently related, either directly or indirectly, to differences in leaching behaviour.</p><p>4. Dynamics of nitrogen and protein contents were similar between treatments, indicating that microbial colonization was not greatly delayed on fresh leaves.</p><p>5. It is concluded that the retention of labile carbon and nutrients in fresh leaf litter facilitates their utilization by leaf‐associated micro‐organisms and invertebrates, resulting in an increased importance of biotic processes relative to physical processes such as leaching.</p><p>6. At the ecosystem level, retention of carbon and nutrients in streams would be increased, allowing greater overall productivity. Conversely, the availability of labile organic carbon would be reduced in compartments such as the epilithon, fine sediments, and the water column.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Differences in processing dynamics of fresh and dried leaf litter in a stream ecosystem</title></titleInfo><name type="personal"><namePart type="given">MARK O.</namePart><namePart type="family">GESSNER</namePart><affiliation>Centre of Ecologie des Ressources Renouvelables, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse 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">1991-12</dateIssued><edition>Manuscript accepted 18 June 1991</edition><copyrightDate encoding="w3cdtf">1991</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">50</extent></physicalDescription><abstract>SUMMARY. 1. Although the bulk of litter input to stream ecosystems is in the form of fresh leaves, current understanding of organic matter processing is largely founded on experimental studies made with pre‐dried leaves. This paradox points to the critical need for evaluating to what extent those experiments with dried leaves reflect natural litter decomposition.</abstract><abstract>2. The mass loss rates, patterns of mass loss, and chemical changes during processing of fresh leaf litter were compared with air‐dried leaf litter in a stream ecosystem.</abstract><abstract>3. Although overall mass loss rates were similar between treatments (k= 0.0213 day−1 and 0.0206 day−1), fresh leaves lost mass at a constant rate, whereas the decay of dried leaves proceeded in two distinct phases. Soluble organic carbon, phosphorus, and potassium were rapidly leached from dried litter, but were largely retained in fresh material for more than a week. Kinetics of concentrations of cellulose and changes in amounts of lignin remaining per leaf pack revealed further differences in decomposition dynamics between treatments, apparently related, either directly or indirectly, to differences in leaching behaviour.</abstract><abstract>4. Dynamics of nitrogen and protein contents were similar between treatments, indicating that microbial colonization was not greatly delayed on fresh leaves.</abstract><abstract>5. It is concluded that the retention of labile carbon and nutrients in fresh leaf litter facilitates their utilization by leaf‐associated micro‐organisms and invertebrates, resulting in an increased importance of biotic processes relative to physical processes such as leaching.</abstract><abstract>6. At the ecosystem level, retention of carbon and nutrients in streams would be increased, allowing greater overall productivity. Conversely, the availability of labile organic carbon would be reduced in compartments such as the epilithon, fine sediments, and the water column.</abstract><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>1991</date><detail type="volume"><caption>vol.</caption><number>26</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>387</start><end>398</end><total>12</total></extent></part></relatedItem><identifier type="istex">A62257A3C08AB8CA22C03CFBCBAE50D842B84700</identifier><identifier type="DOI">10.1111/j.1365-2427.1991.tb01406.x</identifier><identifier type="ArticleID">FWB387</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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