Factors affecting fall down rates of dead aspen (Populus tremuloides) biomass following severe drought in west-central Canada.
Identifieur interne : 001D65 ( Main/Exploration ); précédent : 001D64; suivant : 001D66Factors affecting fall down rates of dead aspen (Populus tremuloides) biomass following severe drought in west-central Canada.
Auteurs : Edward H. Ted Hogg [Canada] ; Michael MichaelianSource :
- Global change biology [ 1365-2486 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- composition chimique : Populus.
- microbiologie : Populus.
- mortalité : Sécheresses.
- métabolisme : Carbone.
- physiologie : Basidiomycota, Populus.
- Biomasse, Canada, Facteurs âges, Vent.
- Wicri :
- geographic : Canada.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon.
- geographic : Canada.
- chemistry : Populus.
- microbiology : Populus.
- mortality : Droughts.
- physiology : Basidiomycota, Populus.
- Age Factors, Biomass, Wind.
Abstract
Increases in mortality of trembling aspen (Populus tremuloides Michx.) have been recorded across large areas of western North America following recent periods of exceptionally severe drought. The resultant increase in standing, dead tree biomass represents a significant potential source of carbon emissions to the atmosphere, but the timing of emissions is partially driven by dead-wood dynamics which include the fall down and breakage of dead aspen stems. The rate at which dead trees fall to the ground also strongly influences the period over which forest dieback episodes can be detected by aerial surveys or satellite remote sensing observations. Over a 12-year period (2000-2012), we monitored the annual status of 1010 aspen trees that died during and following a severe regional drought within 25 study areas across west-central Canada. Observations of stem fall down and breakage (snapping) were used to estimate woody biomass transfer from standing to downed dead wood as a function of years since tree death. For the region as a whole, we estimated that >80% of standing dead aspen biomass had fallen after 10 years. Overall, the rate of fall down was minimal during the year following stem death, but thereafter fall rates followed a negative exponential equation with k = 0.20 per year. However, there was high between-site variation in the rate of fall down (k = 0.08-0.37 per year). The analysis showed that fall down rates were positively correlated with stand age, site windiness, and the incidence of decay fungi (Phellinus tremulae (Bond.) Bond. and Boris.) and wood-boring insects. These factors are thus likely to influence the rate of carbon emissions from dead trees following periods of climate-related forest die-off episodes.
DOI: 10.1111/gcb.12805
PubMed: 25393098
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Ted Hogg</name><affiliation wicri:level="1"><nlm:affiliation>Natural Resources Canada, Canadian Forest Service, 5320-122 Street, Edmonton, AB, T6H 3S5, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Natural Resources Canada, Canadian Forest Service, 5320-122 Street, Edmonton, AB, T6H 3S5</wicri:regionArea><wicri:noRegion>T6H 3S5</wicri:noRegion></affiliation></author><author><name sortKey="Michaelian, Michael" sort="Michaelian, Michael" uniqKey="Michaelian M" first="Michael" last="Michaelian">Michael Michaelian</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2015">2015</date><idno type="RBID">pubmed:25393098</idno><idno type="pmid">25393098</idno><idno type="doi">10.1111/gcb.12805</idno><idno type="wicri:Area/Main/Corpus">001F27</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001F27</idno><idno type="wicri:Area/Main/Curation">001F27</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">001F27</idno><idno type="wicri:Area/Main/Exploration">001F27</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Factors affecting fall down rates of dead aspen (Populus tremuloides) biomass following severe drought in west-central Canada.</title><author><name sortKey="Ted Hogg, Edward H" sort="Ted Hogg, Edward H" uniqKey="Ted Hogg E" first="Edward H" last="Ted Hogg">Edward H. 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The resultant increase in standing, dead tree biomass represents a significant potential source of carbon emissions to the atmosphere, but the timing of emissions is partially driven by dead-wood dynamics which include the fall down and breakage of dead aspen stems. The rate at which dead trees fall to the ground also strongly influences the period over which forest dieback episodes can be detected by aerial surveys or satellite remote sensing observations. Over a 12-year period (2000-2012), we monitored the annual status of 1010 aspen trees that died during and following a severe regional drought within 25 study areas across west-central Canada. Observations of stem fall down and breakage (snapping) were used to estimate woody biomass transfer from standing to downed dead wood as a function of years since tree death. For the region as a whole, we estimated that >80% of standing dead aspen biomass had fallen after 10 years. Overall, the rate of fall down was minimal during the year following stem death, but thereafter fall rates followed a negative exponential equation with k = 0.20 per year. However, there was high between-site variation in the rate of fall down (k = 0.08-0.37 per year). The analysis showed that fall down rates were positively correlated with stand age, site windiness, and the incidence of decay fungi (Phellinus tremulae (Bond.) Bond. and Boris.) and wood-boring insects. These factors are thus likely to influence the rate of carbon emissions from dead trees following periods of climate-related forest die-off episodes.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25393098</PMID><DateCompleted><Year>2016</Year><Month>01</Month><Day>14</Day></DateCompleted><DateRevised><Year>2015</Year><Month>04</Month><Day>20</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-2486</ISSN><JournalIssue CitedMedium="Internet"><Volume>21</Volume><Issue>5</Issue><PubDate><Year>2015</Year><Month>May</Month></PubDate></JournalIssue><Title>Global change biology</Title><ISOAbbreviation>Glob Chang Biol</ISOAbbreviation></Journal><ArticleTitle>Factors affecting fall down rates of dead aspen (Populus tremuloides) biomass following severe drought in west-central Canada.</ArticleTitle><Pagination><MedlinePgn>1968-79</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/gcb.12805</ELocationID><Abstract><AbstractText>Increases in mortality of trembling aspen (Populus tremuloides Michx.) have been recorded across large areas of western North America following recent periods of exceptionally severe drought. The resultant increase in standing, dead tree biomass represents a significant potential source of carbon emissions to the atmosphere, but the timing of emissions is partially driven by dead-wood dynamics which include the fall down and breakage of dead aspen stems. The rate at which dead trees fall to the ground also strongly influences the period over which forest dieback episodes can be detected by aerial surveys or satellite remote sensing observations. Over a 12-year period (2000-2012), we monitored the annual status of 1010 aspen trees that died during and following a severe regional drought within 25 study areas across west-central Canada. Observations of stem fall down and breakage (snapping) were used to estimate woody biomass transfer from standing to downed dead wood as a function of years since tree death. For the region as a whole, we estimated that >80% of standing dead aspen biomass had fallen after 10 years. Overall, the rate of fall down was minimal during the year following stem death, but thereafter fall rates followed a negative exponential equation with k = 0.20 per year. However, there was high between-site variation in the rate of fall down (k = 0.08-0.37 per year). The analysis showed that fall down rates were positively correlated with stand age, site windiness, and the incidence of decay fungi (Phellinus tremulae (Bond.) Bond. and Boris.) and wood-boring insects. These factors are thus likely to influence the rate of carbon emissions from dead trees following periods of climate-related forest die-off episodes.</AbstractText><CopyrightInformation>© 2014 Her Majesty the Queen in Right of Canada Global Change Biology © 2014 John Wiley & Sons Ltd Reproduced with the permission of the Minister of Natural Resources Canada.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ted Hogg</LastName><ForeName>Edward H</ForeName><Initials>EH</Initials><AffiliationInfo><Affiliation>Natural Resources Canada, Canadian Forest Service, 5320-122 Street, Edmonton, AB, T6H 3S5, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Michaelian</LastName><ForeName>Michael</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2015</Year><Month>01</Month><Day>30</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Glob Chang Biol</MedlineTA><NlmUniqueID>9888746</NlmUniqueID><ISSNLinking>1354-1013</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>7440-44-0</RegistryNumber><NameOfSubstance UI="D002244">Carbon</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000367" MajorTopicYN="N">Age Factors</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001487" MajorTopicYN="N">Basidiomycota</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018533" MajorTopicYN="N">Biomass</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002170" MajorTopicYN="N" Type="Geographic">Canada</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002244" MajorTopicYN="N">Carbon</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D055864" MajorTopicYN="N">Droughts</DescriptorName><QualifierName UI="Q000401" MajorTopicYN="Y">mortality</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014919" MajorTopicYN="N">Wind</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Populus tremuloides</Keyword><Keyword MajorTopicYN="N">aspen</Keyword><Keyword MajorTopicYN="N">boreal forest</Keyword><Keyword MajorTopicYN="N">carbon cycling</Keyword><Keyword MajorTopicYN="N">decay fungi</Keyword><Keyword MajorTopicYN="N">drought</Keyword><Keyword MajorTopicYN="N">mortality</Keyword><Keyword MajorTopicYN="N">snag</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2014</Year><Month>03</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>10</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>11</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>11</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2016</Year><Month>1</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">25393098</ArticleId><ArticleId IdType="doi">10.1111/gcb.12805</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Michaelian, Michael" sort="Michaelian, Michael" uniqKey="Michaelian M" first="Michael" last="Michaelian">Michael Michaelian</name></noCountry><country name="Canada"><noRegion><name sortKey="Ted Hogg, Edward H" sort="Ted Hogg, Edward H" uniqKey="Ted Hogg E" first="Edward H" last="Ted Hogg">Edward H. 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