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The effect of colonization and competition processes on the relation between disturbance and diversity in plant communities

hal.structure.identifierUniversité Paris-Sud - Paris 11 [UP11]
hal.structure.identifierInstitut national de recherche en sciences et technologies pour l'environnement et l'agriculture [IRSTEA]
dc.contributor.authorCORDONNIER, Thomas
hal.structure.identifierInstitut national de recherche en sciences et technologies pour l'environnement et l'agriculture [IRSTEA]
dc.contributor.authorCOURBAUD, Benoit
hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
hal.structure.identifierUniversité Paris-Sud - Paris 11 [UP11]
dc.contributor.authorFRANC, Alain
dc.date.issued2006
dc.identifier.issn0022-5193
dc.description.abstractEnMany theoretical and field studies have emphasized the impact of disturbance in the dynamics and diversity of sessile organism communities. This view is best reflected by the Intermediate Disturbance Hypothesis (IDH), which states that a maximum of diversity is found in ecosystems or communities experiencing intermediate disturbance regimes or at an intermediate stage of development since the last major disturbance event. Although theoretical models based on competitive interactions tend to validate this hypothesis, a recent meta-analysis of field experiments revealed that the mono-modal relationship between disturbance and diversity might not be a general pattern. In this article, we investigate the relationship between disturbance and diversity through the study of patch models, combining two types of competitive interactions: with or without competitive hierarchy, with two mechanisms influencing colonization: negative frequency dependence in colonization rates and immigration. These combinations led to various disturbance-diversity patterns. In the model without competitive hierarchy (founder effect model), a decreasing relationship appeared to be the rule as mentioned in previous studies. In the model with competitive hierarchy, the IDH pattern was obtained for low frequency dependence and low immigration. Nevertheless, high negative frequency dependence in colonization rates led to a decreasing relationship between disturbance and diversity. In contrast, high immigration led to an increasing relationship. The coexistence window (the range of disturbance intensity allowing coexistence) was the widest for intermediate immigration rates. For random species assemblages, patterns with multiple peaks were also possible. These results highlight the fact that the mono-modal IDH pattern should not be considered a rule. Competition and colonization mechanisms have a profound impact on the relationship between disturbance and diversity. (c) 2006 Elsevier Ltd. All rights reserved
dc.language.isoen
dc.publisherElsevier
dc.subjectIMMIGRATION
dc.subjectECOLOGIE
dc.subject.enNEGATIVE FREQUENCY DEPENDENCE
dc.subject.enPATCH MODEL
dc.subject.enCOMPETITION COLONIZATION TRADE OFF
dc.subject.enINTERMEDIATE DISTURBANCE HYPOTHESIS
dc.subject.enSPECIES RICHNESS
dc.subject.enFOUNDER CONTROL
dc.title.enThe effect of colonization and competition processes on the relation between disturbance and diversity in plant communities
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jtbi.2006.05.028
dc.subject.halSciences du Vivant [q-bio]/Biologie cellulaire
bordeaux.journalJournal of Theoretical Biology
bordeaux.page1-12
bordeaux.volume243
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02656928
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02656928v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Theoretical%20Biology&rft.date=2006&rft.volume=243&rft.issue=1&rft.spage=1-12&rft.epage=1-12&rft.eissn=0022-5193&rft.issn=0022-5193&rft.au=CORDONNIER,%20Thomas&COURBAUD,%20Benoit&FRANC,%20Alain&rft.genre=article


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