PoplarV1, Main, Exploration, bibRecord, 003482

Species-specific responses to atmospheric carbon dioxide and tropospheric ozone mediate changes in soil carbon.

Identifieur interne : 003482 ( Main/Exploration ); précédent : 003481; suivant : 003483

Species-specific responses to atmospheric carbon dioxide and tropospheric ozone mediate changes in soil carbon.

Auteurs : Alan F. Talhelm [États-Unis] ; Kurt S. Pregitzer ; Donald R. Zak

Source :

Ecology letters [ 1461-0248 ] ; 2009.

RBID : pubmed:19754884

Descripteurs français

KwdFr :
- Arbres (métabolisme), Carbone (analyse), Carbone (métabolisme), Changement climatique (MeSH), Dioxyde de carbone (analyse), Dioxyde de carbone (métabolisme), Modèles théoriques (MeSH), Ozone (analyse), Ozone (métabolisme), Populus (métabolisme), Sol (MeSH), Spécificité d'espèce (MeSH), Surveillance de l'environnement (MeSH).
MESH :
- analyse : Carbone, Dioxyde de carbone, Ozone.
- métabolisme : Arbres, Carbone, Dioxyde de carbone, Ozone, Populus.
- Changement climatique, Modèles théoriques, Sol, Spécificité d'espèce, Surveillance de l'environnement.

English descriptors

KwdEn :
- Carbon (analysis), Carbon (metabolism), Carbon Dioxide (analysis), Carbon Dioxide (metabolism), Climate Change (MeSH), Environmental Monitoring (MeSH), Models, Theoretical (MeSH), Ozone (analysis), Ozone (metabolism), Populus (metabolism), Soil (MeSH), Species Specificity (MeSH), Trees (metabolism).
MESH :
- chemical , analysis : Carbon, Carbon Dioxide, Ozone.
- chemical , metabolism : Carbon, Carbon Dioxide, Ozone.
- metabolism : Populus, Trees.
- Climate Change, Environmental Monitoring, Models, Theoretical, Soil, Species Specificity.

Abstract

We repeatedly sampled the surface mineral soil (0-20 cm depth) in three northern temperate forest communities over an 11-year experimental fumigation to understand the effects of elevated carbon dioxide (CO(2)) and/or elevated phyto-toxic ozone (O(3)) on soil carbon (C). After 11 years, there was no significant main effect of CO(2) or O(3) on soil C. However, within the community containing only aspen (Populus tremuloides Michx.), elevated CO(2) caused a significant decrease in soil C content. Together with the observations of increased litter inputs, this result strongly suggests accelerated decomposition under elevated CO(2.) In addition, an initial reduction in the formation of new (fumigation-derived) soil C by O(3) under elevated CO(2) proved to be only a temporary effect, mirroring trends in fine root biomass. Our results contradict predictions of increased soil C under elevated CO(2) and decreased soil C under elevated O(3) and should be considered in models simulating the effects of Earth's altered atmosphere.

DOI: 10.1111/j.1461-0248.2009.01380.x
PubMed: 19754884

Affiliations:

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Le document en format XML

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<author><name sortKey="Talhelm, Alan F" sort="Talhelm, Alan F" uniqKey="Talhelm A" first="Alan F" last="Talhelm">Alan F. Talhelm</name>
<affiliation wicri:level="2"><nlm:affiliation>Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89512, USA. atalhelm@cabnr.unr.edu</nlm:affiliation>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon (analysis)</term>
<term>Carbon (metabolism)</term>
<term>Carbon Dioxide (analysis)</term>
<term>Carbon Dioxide (metabolism)</term>
<term>Climate Change (MeSH)</term>
<term>Environmental Monitoring (MeSH)</term>
<term>Models, Theoretical (MeSH)</term>
<term>Ozone (analysis)</term>
<term>Ozone (metabolism)</term>
<term>Populus (metabolism)</term>
<term>Soil (MeSH)</term>
<term>Species Specificity (MeSH)</term>
<term>Trees (metabolism)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Arbres (métabolisme)</term>
<term>Carbone (analyse)</term>
<term>Carbone (métabolisme)</term>
<term>Changement climatique (MeSH)</term>
<term>Dioxyde de carbone (analyse)</term>
<term>Dioxyde de carbone (métabolisme)</term>
<term>Modèles théoriques (MeSH)</term>
<term>Ozone (analyse)</term>
<term>Ozone (métabolisme)</term>
<term>Populus (métabolisme)</term>
<term>Sol (MeSH)</term>
<term>Spécificité d'espèce (MeSH)</term>
<term>Surveillance de l'environnement (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Carbon</term>
<term>Carbon Dioxide</term>
<term>Ozone</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term>
<term>Carbon Dioxide</term>
<term>Ozone</term>
</keywords>
<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Carbone</term>
<term>Dioxyde de carbone</term>
<term>Ozone</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Populus</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Arbres</term>
<term>Carbone</term>
<term>Dioxyde de carbone</term>
<term>Ozone</term>
<term>Populus</term>
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<keywords scheme="MESH" xml:lang="en"><term>Climate Change</term>
<term>Environmental Monitoring</term>
<term>Models, Theoretical</term>
<term>Soil</term>
<term>Species Specificity</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Changement climatique</term>
<term>Modèles théoriques</term>
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<term>Spécificité d'espèce</term>
<term>Surveillance de l'environnement</term>
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<front><div type="abstract" xml:lang="en">We repeatedly sampled the surface mineral soil (0-20 cm depth) in three northern temperate forest communities over an 11-year experimental fumigation to understand the effects of elevated carbon dioxide (CO(2)) and/or elevated phyto-toxic ozone (O(3)) on soil carbon (C). After 11 years, there was no significant main effect of CO(2) or O(3) on soil C. However, within the community containing only aspen (Populus tremuloides Michx.), elevated CO(2) caused a significant decrease in soil C content. Together with the observations of increased litter inputs, this result strongly suggests accelerated decomposition under elevated CO(2.) In addition, an initial reduction in the formation of new (fumigation-derived) soil C by O(3) under elevated CO(2) proved to be only a temporary effect, mirroring trends in fine root biomass. Our results contradict predictions of increased soil C under elevated CO(2) and decreased soil C under elevated O(3) and should be considered in models simulating the effects of Earth's altered atmosphere.</div>
</front>
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<Title>Ecology letters</Title>
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<ArticleTitle>Species-specific responses to atmospheric carbon dioxide and tropospheric ozone mediate changes in soil carbon.</ArticleTitle>
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Species-specific responses to atmospheric carbon dioxide and tropospheric ozone mediate changes in soil carbon.

Species-specific responses to atmospheric carbon dioxide and tropospheric ozone mediate changes in soil carbon.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki