The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes
Identifieur interne : 001705 ( Istex/Corpus ); précédent : 001704; suivant : 001706The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes
Auteurs : Roland I. Hall ; John P. SmolSource :
- Hydrobiologia [ 0018-8158 ] ; 1993-10-01.
Abstract
Abstract: We investigated the ecological effects of terrestrial ecosystem change during the hemlock decline and recovery (4,800–3,500 BP) on lake communities (diatoms and chrysophytes). This study specifically assessed the role of catchment area and slope in determining the magnitude of lake eutrophication during the hemlock decline by analyzing sediment cores from five alkaline, holomictic lakes in southeastern Ontario, Canada. The study lakes were similar in most limnological aspects, but differed widely in the relative sizes of their catchments. Diatoms were used to quantitatively infer past lake-water total phosphorus (TP) concentrations. All five lakes showed shifts in their algal communities during the hemlock decline, but most lakes exhibited only minor changes in trophic status. The magnitude of the limnological response appears to be related to catchment size and slope. Long Lake, Burridge Lake, and Gunter Lake possess the smallest catchments and exhibited the weakest responses to the hemlock decline. The catchment area of Flower Round Lake is considerably larger and steeper than these lakes, and was the only lake to show a marked eutrophication. Aulacoseira ambigua bloomed and diatom-inferred TP concentration increased by 14 µg 1−1. Catchment slope appears to have influenced the type of material exported into the lakes. Lake basins draining catchments with gentle relief received proportionally greater amounts of organic matter, whereas steeper catchments supplied relatively greater proportions of mineral matter. Faster water flow associated with steeper catchment slope may have enhanced mineral erosion Following the hemlock decline, nutrient supplies to most of the study lakes were reduced. The period of forest recovery was associated with an 11 µg 1−1 reduction in diatom-inferred lake-water TP concentration in Flower Round Lake, and algal populations decreased. Our results generally support the ecological theory of forest ecosystem development and secondary succession developed from long-term data collected at the Hubbard Brook Experimental Ecosystem.
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DOI: 10.1007/BF00028036
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title><author><name sortKey="Hall, Roland I" sort="Hall, Roland I" uniqKey="Hall R" first="Roland I." last="Hall">Roland I. Hall</name><affiliation><mods:affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</mods:affiliation></affiliation></author><author><name sortKey="Smol, John P" sort="Smol, John P" uniqKey="Smol J" first="John P." last="Smol">John P. Smol</name><affiliation><mods:affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:71195BA2649673A80424F8EE32163ABD5A410DAB</idno><date when="1993" year="1993">1993</date><idno type="doi">10.1007/BF00028036</idno><idno type="url">https://api.istex.fr/document/71195BA2649673A80424F8EE32163ABD5A410DAB/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001705</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001705</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title><author><name sortKey="Hall, Roland I" sort="Hall, Roland I" uniqKey="Hall R" first="Roland I." last="Hall">Roland I. Hall</name><affiliation><mods:affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</mods:affiliation></affiliation></author><author><name sortKey="Smol, John P" sort="Smol, John P" uniqKey="Smol J" first="John P." last="Smol">John P. Smol</name><affiliation><mods:affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Hydrobiologia</title><title level="j" type="sub">The International Journal of Aquatic Sciences</title><title level="j" type="abbrev">Hydrobiologia</title><idno type="ISSN">0018-8158</idno><idno type="eISSN">1573-5117</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1993-10-01">1993-10-01</date><biblScope unit="volume">269-270</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="371">371</biblScope><biblScope unit="page" to="390">390</biblScope></imprint><idno type="ISSN">0018-8158</idno></series><idno type="istex">71195BA2649673A80424F8EE32163ABD5A410DAB</idno><idno type="DOI">10.1007/BF00028036</idno><idno type="ArticleID">BF00028036</idno><idno type="ArticleID">Art41</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0018-8158</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: We investigated the ecological effects of terrestrial ecosystem change during the hemlock decline and recovery (4,800–3,500 BP) on lake communities (diatoms and chrysophytes). This study specifically assessed the role of catchment area and slope in determining the magnitude of lake eutrophication during the hemlock decline by analyzing sediment cores from five alkaline, holomictic lakes in southeastern Ontario, Canada. The study lakes were similar in most limnological aspects, but differed widely in the relative sizes of their catchments. Diatoms were used to quantitatively infer past lake-water total phosphorus (TP) concentrations. All five lakes showed shifts in their algal communities during the hemlock decline, but most lakes exhibited only minor changes in trophic status. The magnitude of the limnological response appears to be related to catchment size and slope. Long Lake, Burridge Lake, and Gunter Lake possess the smallest catchments and exhibited the weakest responses to the hemlock decline. The catchment area of Flower Round Lake is considerably larger and steeper than these lakes, and was the only lake to show a marked eutrophication. Aulacoseira ambigua bloomed and diatom-inferred TP concentration increased by 14 µg 1−1. Catchment slope appears to have influenced the type of material exported into the lakes. Lake basins draining catchments with gentle relief received proportionally greater amounts of organic matter, whereas steeper catchments supplied relatively greater proportions of mineral matter. Faster water flow associated with steeper catchment slope may have enhanced mineral erosion Following the hemlock decline, nutrient supplies to most of the study lakes were reduced. The period of forest recovery was associated with an 11 µg 1−1 reduction in diatom-inferred lake-water TP concentration in Flower Round Lake, and algal populations decreased. Our results generally support the ecological theory of forest ecosystem development and secondary succession developed from long-term data collected at the Hubbard Brook Experimental Ecosystem.</div></front></TEI><istex><corpusName>springer</corpusName><author><json:item><name>Roland I. Hall</name><affiliations><json:string>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</json:string></affiliations></json:item><json:item><name>John P. Smol</name><affiliations><json:string>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</json:string></affiliations></json:item></author><articleId><json:string>BF00028036</json:string><json:string>Art41</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>OriginalPaper</json:string></originalGenre><abstract>Abstract: We investigated the ecological effects of terrestrial ecosystem change during the hemlock decline and recovery (4,800–3,500 BP) on lake communities (diatoms and chrysophytes). This study specifically assessed the role of catchment area and slope in determining the magnitude of lake eutrophication during the hemlock decline by analyzing sediment cores from five alkaline, holomictic lakes in southeastern Ontario, Canada. The study lakes were similar in most limnological aspects, but differed widely in the relative sizes of their catchments. Diatoms were used to quantitatively infer past lake-water total phosphorus (TP) concentrations. All five lakes showed shifts in their algal communities during the hemlock decline, but most lakes exhibited only minor changes in trophic status. The magnitude of the limnological response appears to be related to catchment size and slope. Long Lake, Burridge Lake, and Gunter Lake possess the smallest catchments and exhibited the weakest responses to the hemlock decline. The catchment area of Flower Round Lake is considerably larger and steeper than these lakes, and was the only lake to show a marked eutrophication. Aulacoseira ambigua bloomed and diatom-inferred TP concentration increased by 14 µg 1−1. Catchment slope appears to have influenced the type of material exported into the lakes. Lake basins draining catchments with gentle relief received proportionally greater amounts of organic matter, whereas steeper catchments supplied relatively greater proportions of mineral matter. Faster water flow associated with steeper catchment slope may have enhanced mineral erosion Following the hemlock decline, nutrient supplies to most of the study lakes were reduced. The period of forest recovery was associated with an 11 µg 1−1 reduction in diatom-inferred lake-water TP concentration in Flower Round Lake, and algal populations decreased. Our results generally support the ecological theory of forest ecosystem development and secondary succession developed from long-term data collected at the Hubbard Brook Experimental Ecosystem.</abstract><qualityIndicators><score>8</score><pdfVersion>1.3</pdfVersion><pdfPageSize>540 x 738 pts</pdfPageSize><refBibsNative>false</refBibsNative><keywordCount>0</keywordCount><abstractCharCount>2098</abstractCharCount><pdfWordCount>9404</pdfWordCount><pdfCharCount>53451</pdfCharCount><pdfPageCount>20</pdfPageCount><abstractWordCount>301</abstractWordCount></qualityIndicators><title>The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title><refBibs><json:item><author></author><host><author></author><title>Bormann et al</title><publicationDate>1968</publicationDate></host><title>Lake-watershed interactions during forest recovery Ecosystem research at the Hubbard Brook Experimental Forest (New Hampshire) has contributed towards the development of the Biomass Accumulation Model (e .g</title><publicationDate>1968</publicationDate></json:item><json:item><author><json:item><name>& Likens Bormann</name></json:item><json:item><name> Gorham</name></json:item></author><host><volume>64</volume><pages><last>1105</last><first>1101</first></pages><author></author><title>Ecology</title><publicationDate>1979</publicationDate></host><title>This model describes changes in forest structure and function following a catastrophic disturbance , and is based on measured and projected changes in total biomass following clear-cutting . 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Paleolimnol</title><publicationDate>1989</publicationDate></host><title>The developmental history of Adirondack (N .Y .) lakes</title><publicationDate>1989</publicationDate></json:item></refBibs><genre><json:string>research-article</json:string></genre><host><volume>269-270</volume><pages><last>390</last><first>371</first></pages><issn><json:string>0018-8158</json:string></issn><issue>1</issue><subject><json:item><value>Ecology</value></json:item><json:item><value>Hydrobiology</value></json:item></subject><journalId><json:string>10750</json:string></journalId><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1573-5117</json:string></eissn><title>Hydrobiologia</title><publicationDate>1993</publicationDate><copyrightDate>1993</copyrightDate></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>1993</publicationDate><copyrightDate>1993</copyrightDate><doi><json:string>10.1007/BF00028036</json:string></doi><id>71195BA2649673A80424F8EE32163ABD5A410DAB</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/71195BA2649673A80424F8EE32163ABD5A410DAB/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/71195BA2649673A80424F8EE32163ABD5A410DAB/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/71195BA2649673A80424F8EE32163ABD5A410DAB/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title><respStmt><resp>Références bibliographiques récupérées via GROBID</resp><name resp="ISTEX-API">ISTEX-API (INIST-CNRS)</name></respStmt><respStmt><resp>Références bibliographiques récupérées via GROBID</resp><name resp="ISTEX-API">ISTEX-API (INIST-CNRS)</name></respStmt></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><availability><p>Kluwer Academic Publishers, 1993</p></availability><date>1993</date></publicationStmt><notesStmt><note>Lakes</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title><author xml:id="author-1"><persName><forename type="first">Roland</forename><surname>Hall</surname></persName><affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</affiliation></author><author xml:id="author-2"><persName><forename type="first">John</forename><surname>Smol</surname></persName><affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</affiliation></author></analytic><monogr><title level="j">Hydrobiologia</title><title level="j" type="sub">The International Journal of Aquatic Sciences</title><title level="j" type="abbrev">Hydrobiologia</title><idno type="journal-ID">10750</idno><idno type="pISSN">0018-8158</idno><idno type="eISSN">1573-5117</idno><idno type="issue-article-count">57</idno><idno type="volume-issue-count">0</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1993-10-01"></date><biblScope unit="volume">269-270</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="371">371</biblScope><biblScope unit="page" to="390">390</biblScope></imprint></monogr><idno type="istex">71195BA2649673A80424F8EE32163ABD5A410DAB</idno><idno type="DOI">10.1007/BF00028036</idno><idno type="ArticleID">BF00028036</idno><idno type="ArticleID">Art41</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1993</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Abstract: We investigated the ecological effects of terrestrial ecosystem change during the hemlock decline and recovery (4,800–3,500 BP) on lake communities (diatoms and chrysophytes). This study specifically assessed the role of catchment area and slope in determining the magnitude of lake eutrophication during the hemlock decline by analyzing sediment cores from five alkaline, holomictic lakes in southeastern Ontario, Canada. The study lakes were similar in most limnological aspects, but differed widely in the relative sizes of their catchments. Diatoms were used to quantitatively infer past lake-water total phosphorus (TP) concentrations. All five lakes showed shifts in their algal communities during the hemlock decline, but most lakes exhibited only minor changes in trophic status. The magnitude of the limnological response appears to be related to catchment size and slope. Long Lake, Burridge Lake, and Gunter Lake possess the smallest catchments and exhibited the weakest responses to the hemlock decline. The catchment area of Flower Round Lake is considerably larger and steeper than these lakes, and was the only lake to show a marked eutrophication. Aulacoseira ambigua bloomed and diatom-inferred TP concentration increased by 14 µg 1−1. Catchment slope appears to have influenced the type of material exported into the lakes. Lake basins draining catchments with gentle relief received proportionally greater amounts of organic matter, whereas steeper catchments supplied relatively greater proportions of mineral matter. Faster water flow associated with steeper catchment slope may have enhanced mineral erosion Following the hemlock decline, nutrient supplies to most of the study lakes were reduced. The period of forest recovery was associated with an 11 µg 1−1 reduction in diatom-inferred lake-water TP concentration in Flower Round Lake, and algal populations decreased. Our results generally support the ecological theory of forest ecosystem development and secondary succession developed from long-term data collected at the Hubbard Brook Experimental Ecosystem.</p></abstract><textClass><keywords scheme="Journal Subject"><list><head>Life Sciences</head><item><term>Ecology</term></item><item><term>Hydrobiology</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1993-10-01">Published</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2016-11-23">References added</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2017-01-21">References added</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/71195BA2649673A80424F8EE32163ABD5A410DAB/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Springer, Publisher found" wicri:toSee="no header"><istex:xmlDeclaration>version="1.0" encoding="UTF-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//Springer-Verlag//DTD A++ V2.4//EN" URI="http://devel.springer.de/A++/V2.4/DTD/A++V2.4.dtd" name="istex:docType"></istex:docType><istex:document><Publisher><PublisherInfo><PublisherName>Kluwer Academic Publishers</PublisherName><PublisherLocation>Dordrecht</PublisherLocation></PublisherInfo><Journal><JournalInfo JournalProductType="ArchiveJournal" NumberingStyle="Unnumbered"><JournalID>10750</JournalID><JournalPrintISSN>0018-8158</JournalPrintISSN><JournalElectronicISSN>1573-5117</JournalElectronicISSN><JournalTitle>Hydrobiologia</JournalTitle><JournalSubTitle>The International Journal of Aquatic Sciences</JournalSubTitle><JournalAbbreviatedTitle>Hydrobiologia</JournalAbbreviatedTitle><JournalSubjectGroup><JournalSubject Type="Primary">Life Sciences</JournalSubject><JournalSubject Type="Secondary">Ecology</JournalSubject><JournalSubject Type="Secondary">Hydrobiology</JournalSubject></JournalSubjectGroup></JournalInfo><Volume><VolumeInfo VolumeType="Combined" TocLevels="0"><VolumeIDStart>269</VolumeIDStart><VolumeIDEnd>270</VolumeIDEnd><VolumeIssueCount>0</VolumeIssueCount></VolumeInfo><Issue IssueType="Regular"><IssueInfo TocLevels="0"><IssueIDStart>1</IssueIDStart><IssueIDEnd>1</IssueIDEnd><IssueArticleCount>57</IssueArticleCount><IssueHistory><CoverDate><Year>1993</Year><Month>10</Month></CoverDate></IssueHistory><IssueCopyright><CopyrightHolderName>Kluwer Academic Publishers</CopyrightHolderName><CopyrightYear>1993</CopyrightYear></IssueCopyright></IssueInfo><Article ID="Art41"><ArticleInfo Language="En" ArticleType="OriginalPaper" NumberingStyle="Unnumbered" TocLevels="0" ContainsESM="No"><ArticleID>BF00028036</ArticleID><ArticleDOI>10.1007/BF00028036</ArticleDOI><ArticleSequenceNumber>41</ArticleSequenceNumber><ArticleTitle Language="En">The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</ArticleTitle><ArticleCategory>Lakes</ArticleCategory><ArticleFirstPage>371</ArticleFirstPage><ArticleLastPage>390</ArticleLastPage><ArticleHistory><RegistrationDate><Year>2004</Year><Month>4</Month><Day>18</Day></RegistrationDate></ArticleHistory><ArticleCopyright><CopyrightHolderName>Kluwer Academic Publishers</CopyrightHolderName><CopyrightYear>1993</CopyrightYear></ArticleCopyright><ArticleGrants Type="Regular"><MetadataGrant Grant="OpenAccess"></MetadataGrant><AbstractGrant Grant="OpenAccess"></AbstractGrant><BodyPDFGrant Grant="Restricted"></BodyPDFGrant><BodyHTMLGrant Grant="Restricted"></BodyHTMLGrant><BibliographyGrant Grant="Restricted"></BibliographyGrant><ESMGrant Grant="Restricted"></ESMGrant></ArticleGrants><ArticleContext><JournalID>10750</JournalID><VolumeIDStart>269</VolumeIDStart><VolumeIDEnd>270</VolumeIDEnd><IssueIDStart>1</IssueIDStart><IssueIDEnd>1</IssueIDEnd></ArticleContext></ArticleInfo><ArticleHeader><AuthorGroup><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Roland</GivenName><GivenName>I.</GivenName><FamilyName>Hall</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>John</GivenName><GivenName>P.</GivenName><FamilyName>Smol</FamilyName></AuthorName></Author><Affiliation ID="Aff1"><OrgDivision>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology</OrgDivision><OrgName>Queen's University</OrgName><OrgAddress><Postcode>K7L 3N6</Postcode><City>Kingston</City><State>Ontario</State><Country>Canada</Country></OrgAddress></Affiliation></AuthorGroup><Abstract ID="Abs1" Language="En"><Heading>Abstract</Heading><Para>We investigated the ecological effects of terrestrial ecosystem change during the hemlock decline and recovery (4,800–3,500 BP) on lake communities (diatoms and chrysophytes). This study specifically assessed the role of catchment area and slope in determining the magnitude of lake eutrophication during the hemlock decline by analyzing sediment cores from five alkaline, holomictic lakes in southeastern Ontario, Canada. The study lakes were similar in most limnological aspects, but differed widely in the relative sizes of their catchments. Diatoms were used to quantitatively infer past lake-water total phosphorus (TP) concentrations.</Para><Para>All five lakes showed shifts in their algal communities during the hemlock decline, but most lakes exhibited only minor changes in trophic status. The magnitude of the limnological response appears to be related to catchment size and slope. Long Lake, Burridge Lake, and Gunter Lake possess the smallest catchments and exhibited the weakest responses to the hemlock decline. The catchment area of Flower Round Lake is considerably larger and steeper than these lakes, and was the only lake to show a marked eutrophication. <Emphasis Type="Italic">Aulacoseira ambigua</Emphasis> bloomed and diatom-inferred TP concentration increased by 14 µg 1<Superscript>−1</Superscript>.</Para><Para>Catchment slope appears to have influenced the type of material exported into the lakes. Lake basins draining catchments with gentle relief received proportionally greater amounts of organic matter, whereas steeper catchments supplied relatively greater proportions of mineral matter. Faster water flow associated with steeper catchment slope may have enhanced mineral erosion</Para><Para>Following the hemlock decline, nutrient supplies to most of the study lakes were reduced. The period of forest recovery was associated with an 11 µg 1<Superscript>−1</Superscript> reduction in diatom-inferred lake-water TP concentration in Flower Round Lake, and algal populations decreased. Our results generally support the ecological theory of forest ecosystem development and secondary succession developed from long-term data collected at the Hubbard Brook Experimental Ecosystem.</Para></Abstract><KeywordGroup Language="En"><Heading>Key words</Heading><Keyword>paleolimnology</Keyword><Keyword>hemlock decline</Keyword><Keyword>diatoms</Keyword><Keyword>eutrophication</Keyword><Keyword>Ontario</Keyword></KeywordGroup></ArticleHeader><NoBody></NoBody></Article></Issue></Volume></Journal></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>The influence of catchment size on lake trophic status during the hemlock decline and recovery (4800 to 3500 BP) in southern Ontario lakes</title></titleInfo><name type="personal"><namePart type="given">Roland</namePart><namePart type="given">I.</namePart><namePart type="family">Hall</namePart><affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">John</namePart><namePart type="given">P.</namePart><namePart type="family">Smol</namePart><affiliation>Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, Ontario, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="OriginalPaper"></genre><originInfo><publisher>Kluwer Academic Publishers</publisher><place><placeTerm type="text">Dordrecht</placeTerm></place><dateIssued encoding="w3cdtf">1993-10-01</dateIssued><copyrightDate encoding="w3cdtf">1993</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Abstract: We investigated the ecological effects of terrestrial ecosystem change during the hemlock decline and recovery (4,800–3,500 BP) on lake communities (diatoms and chrysophytes). This study specifically assessed the role of catchment area and slope in determining the magnitude of lake eutrophication during the hemlock decline by analyzing sediment cores from five alkaline, holomictic lakes in southeastern Ontario, Canada. The study lakes were similar in most limnological aspects, but differed widely in the relative sizes of their catchments. Diatoms were used to quantitatively infer past lake-water total phosphorus (TP) concentrations. All five lakes showed shifts in their algal communities during the hemlock decline, but most lakes exhibited only minor changes in trophic status. The magnitude of the limnological response appears to be related to catchment size and slope. Long Lake, Burridge Lake, and Gunter Lake possess the smallest catchments and exhibited the weakest responses to the hemlock decline. The catchment area of Flower Round Lake is considerably larger and steeper than these lakes, and was the only lake to show a marked eutrophication. Aulacoseira ambigua bloomed and diatom-inferred TP concentration increased by 14 µg 1−1. Catchment slope appears to have influenced the type of material exported into the lakes. Lake basins draining catchments with gentle relief received proportionally greater amounts of organic matter, whereas steeper catchments supplied relatively greater proportions of mineral matter. Faster water flow associated with steeper catchment slope may have enhanced mineral erosion Following the hemlock decline, nutrient supplies to most of the study lakes were reduced. The period of forest recovery was associated with an 11 µg 1−1 reduction in diatom-inferred lake-water TP concentration in Flower Round Lake, and algal populations decreased. Our results generally support the ecological theory of forest ecosystem development and secondary succession developed from long-term data collected at the Hubbard Brook Experimental Ecosystem.</abstract><note>Lakes</note><relatedItem type="host"><titleInfo><title>Hydrobiologia</title><subTitle>The International Journal of Aquatic Sciences</subTitle></titleInfo><titleInfo type="abbreviated"><title>Hydrobiologia</title></titleInfo><genre type="journal" displayLabel="Archive Journal"></genre><originInfo><dateIssued encoding="w3cdtf">1993-10-01</dateIssued><copyrightDate encoding="w3cdtf">1993</copyrightDate></originInfo><subject><genre>Life Sciences</genre><topic>Ecology</topic><topic>Hydrobiology</topic></subject><identifier type="ISSN">0018-8158</identifier><identifier type="eISSN">1573-5117</identifier><identifier type="JournalID">10750</identifier><identifier type="IssueArticleCount">57</identifier><identifier type="VolumeIssueCount">0</identifier><part><date>1993</date><detail type="volume"><number>269-270</number><caption>vol.</caption></detail><detail type="issue"><number>1</number><caption>no.</caption></detail><extent unit="pages"><start>371</start><end>390</end></extent></part><recordInfo><recordOrigin>Kluwer Academic Publishers, 1993</recordOrigin></recordInfo></relatedItem><identifier type="istex">71195BA2649673A80424F8EE32163ABD5A410DAB</identifier><identifier type="DOI">10.1007/BF00028036</identifier><identifier type="ArticleID">BF00028036</identifier><identifier type="ArticleID">Art41</identifier><accessCondition type="use and reproduction" contentType="copyright">Kluwer Academic Publishers, 1993</accessCondition><recordInfo><recordContentSource>SPRINGER</recordContentSource><recordOrigin>Kluwer Academic Publishers, 1993</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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