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Species-Specific Traits plus Stabilizing Processes Best Explain Coexistence in Biodiverse Fire-Prone Plant Communities

Identifieur interne : 002937 ( Pmc/Curation ); précédent : 002936; suivant : 002938

Species-Specific Traits plus Stabilizing Processes Best Explain Coexistence in Biodiverse Fire-Prone Plant Communities

Auteurs : Jürgen Groeneveld [Allemagne, Nouvelle-Zélande] ; Neal J. Enright [Australie] ; Byron B. Lamont [Australie] ; Björn Reineking [Allemagne, France] ; Karin Frank [Allemagne] ; George L. W. Perry [Nouvelle-Zélande]

Source :

RBID : PMC:3667055

Abstract

Coexistence in fire-prone Mediterranean-type shrublands has been explored in the past using both neutral and niche-based models. However, distinct differences between plant functional types (PFTs), such as fire-killed vs resprouting responses to fire, and the relative similarity of species within a PFT, suggest that coexistence models might benefit from combining both neutral and niche-based (stabilizing) approaches. We developed a multispecies metacommunity model where species are grouped into two PFTs (fire-killed vs resprouting) to investigate the roles of neutral and stabilizing processes on species richness and rank-abundance distributions. Our results show that species richness can be maintained in two ways: i) strictly neutral species within each PFT, or ii) species within PFTs differing in key demographic properties, provided that additional stabilizing processes, such as negative density regulation, also operate. However, only simulations including stabilizing processes resulted in structurally realistic rank-abundance distributions over plausible time scales. This result underscores the importance of including both key species traits and stabilizing (niche) processes in explaining species coexistence and community structure.


Url:
DOI: 10.1371/journal.pone.0065084
PubMed: 23734234
PubMed Central: 3667055

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PMC:3667055

Le document en format XML

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<p>Coexistence in fire-prone Mediterranean-type shrublands has been explored in the past using both neutral and niche-based models. However, distinct differences between plant functional types (PFTs), such as fire-killed
<italic>vs</italic>
resprouting responses to fire, and the relative similarity of species within a PFT, suggest that coexistence models might benefit from combining both neutral and niche-based (stabilizing) approaches. We developed a multispecies metacommunity model where species are grouped into two PFTs (fire-killed
<italic>vs</italic>
resprouting) to investigate the roles of neutral and stabilizing processes on species richness and rank-abundance distributions. Our results show that species richness can be maintained in two ways: i) strictly neutral species within each PFT, or ii) species within PFTs differing in key demographic properties, provided that additional stabilizing processes, such as negative density regulation, also operate. However, only simulations including stabilizing processes resulted in structurally realistic rank-abundance distributions over plausible time scales. This result underscores the importance of including both key species traits and stabilizing (niche) processes in explaining species coexistence and community structure.</p>
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<pmc article-type="research-article">
<pmc-dir>properties open_access</pmc-dir>
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">PLoS One</journal-id>
<journal-id journal-id-type="iso-abbrev">PLoS ONE</journal-id>
<journal-id journal-id-type="publisher-id">plos</journal-id>
<journal-id journal-id-type="pmc">plosone</journal-id>
<journal-title-group>
<journal-title>PLoS ONE</journal-title>
</journal-title-group>
<issn pub-type="epub">1932-6203</issn>
<publisher>
<publisher-name>Public Library of Science</publisher-name>
<publisher-loc>San Francisco, USA</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="pmid">23734234</article-id>
<article-id pub-id-type="pmc">3667055</article-id>
<article-id pub-id-type="publisher-id">PONE-D-12-30553</article-id>
<article-id pub-id-type="doi">10.1371/journal.pone.0065084</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Research Article</subject>
</subj-group>
<subj-group subj-group-type="Discipline-v2">
<subject>Biology</subject>
<subj-group>
<subject>Computational Biology</subject>
<subj-group>
<subject>Ecosystem Modeling</subject>
<subject>Population Modeling</subject>
</subj-group>
</subj-group>
<subj-group>
<subject>Ecology</subject>
<subj-group>
<subject>Community Ecology</subject>
<subj-group>
<subject>Community Assembly</subject>
<subject>Community Structure</subject>
<subject>Species Interactions</subject>
</subj-group>
</subj-group>
<subj-group>
<subject>Ecosystems</subject>
<subj-group>
<subject>Artificial Ecosystems</subject>
<subject>Ecosystem Modeling</subject>
</subj-group>
</subj-group>
<subj-group>
<subject>Biodiversity</subject>
<subject>Spatial and Landscape Ecology</subject>
<subject>Theoretical Ecology</subject>
</subj-group>
</subj-group>
<subj-group>
<subject>Evolutionary Biology</subject>
<subj-group>
<subject>Population Genetics</subject>
<subj-group>
<subject>Neutral Theory</subject>
</subj-group>
</subj-group>
</subj-group>
</subj-group>
</article-categories>
<title-group>
<article-title>Species-Specific Traits plus Stabilizing Processes Best Explain Coexistence in Biodiverse Fire-Prone Plant Communities</article-title>
<alt-title alt-title-type="running-head">Hybrid Metacommunity Model</alt-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Groeneveld</surname>
<given-names>Jürgen</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="corresp" rid="cor1">
<sup>*</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Enright</surname>
<given-names>Neal J.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Lamont</surname>
<given-names>Byron B.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Reineking</surname>
<given-names>Björn</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Frank</surname>
<given-names>Karin</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Perry</surname>
<given-names>George L. W.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
</contrib-group>
<aff id="aff1">
<label>1</label>
<addr-line>Department of Ecological Modelling, UFZ - Helmholtz Centre for Environmental Research, Leipzig, Germany</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>School of Environment, University of Auckland, Auckland, New Zealand</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>School of Environmental Science, Murdoch University, Murdoch, Australia</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Department of Environment and Agriculture, Curtin University, Perth, Australia</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Biogeographical Modelling, University of Bayreuth, Bayreuth, Germany</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>Unité de recherche écosystèmes montagnards, Irstea, Grenoble, France</addr-line>
</aff>
<aff id="aff7">
<label>7</label>
<addr-line>School of Biological Sciences, University of Auckland, Auckland, New Zealand</addr-line>
</aff>
<contrib-group>
<contrib contrib-type="editor">
<name>
<surname>Hérault</surname>
<given-names>Bruno</given-names>
</name>
<role>Editor</role>
<xref ref-type="aff" rid="edit1"></xref>
</contrib>
</contrib-group>
<aff id="edit1">
<addr-line>Cirad, France</addr-line>
</aff>
<author-notes>
<corresp id="cor1">* E-mail:
<email>juergen.groeneveld@ufz.de</email>
</corresp>
<fn fn-type="conflict">
<p>
<bold>Competing Interests: </bold>
The authors have declared that no competing interests exist.</p>
</fn>
<fn fn-type="con">
<p>Conceived and designed the experiments: JG NJE BR GLWP. Performed the experiments: JG. Analyzed the data: JG NJE BR GLWP. Wrote the paper: JG NJE BBL BR KF GLWP.</p>
</fn>
</author-notes>
<pub-date pub-type="collection">
<year>2013</year>
</pub-date>
<pub-date pub-type="epub">
<day>29</day>
<month>5</month>
<year>2013</year>
</pub-date>
<volume>8</volume>
<issue>5</issue>
<elocation-id>e65084</elocation-id>
<history>
<date date-type="received">
<day>5</day>
<month>10</month>
<year>2012</year>
</date>
<date date-type="accepted">
<day>22</day>
<month>4</month>
<year>2013</year>
</date>
</history>
<permissions>
<copyright-year>2013</copyright-year>
<copyright-holder>Groeneveld et al</copyright-holder>
<license>
<license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p>
</license>
</permissions>
<abstract>
<p>Coexistence in fire-prone Mediterranean-type shrublands has been explored in the past using both neutral and niche-based models. However, distinct differences between plant functional types (PFTs), such as fire-killed
<italic>vs</italic>
resprouting responses to fire, and the relative similarity of species within a PFT, suggest that coexistence models might benefit from combining both neutral and niche-based (stabilizing) approaches. We developed a multispecies metacommunity model where species are grouped into two PFTs (fire-killed
<italic>vs</italic>
resprouting) to investigate the roles of neutral and stabilizing processes on species richness and rank-abundance distributions. Our results show that species richness can be maintained in two ways: i) strictly neutral species within each PFT, or ii) species within PFTs differing in key demographic properties, provided that additional stabilizing processes, such as negative density regulation, also operate. However, only simulations including stabilizing processes resulted in structurally realistic rank-abundance distributions over plausible time scales. This result underscores the importance of including both key species traits and stabilizing (niche) processes in explaining species coexistence and community structure.</p>
</abstract>
<funding-group>
<funding-statement>The Banksia work was funded through several Australian Research Council grants to NE, BL and Siegy Krauss. Support for JG, GP and NE was also provided by the Department of Ecological Modelling, UFZ, Leipzig-Halle, Germany, and the European Community (MOIF-CT-2006-40571). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.</funding-statement>
</funding-group>
<counts>
<page-count count="9"></page-count>
</counts>
</article-meta>
</front>
</pmc>
</record>

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