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Drought-induced mortality of a foundation species (Juniperus monosperma) promotes positive afterlife effects in understory vegetation

hal.structure.identifierSchool of Forestry
dc.contributor.authorKANE, J.M.
hal.structure.identifierNorthern Arizona University [Flagstaff]
dc.contributor.authorMEINHARDT, K.A.
hal.structure.identifierNorthern Arizona University [Flagstaff]
dc.contributor.authorCHANG, T.
hal.structure.identifierDepartment of Biological Sciences
dc.contributor.authorCARDALL, B.L.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMICHALET, Richard
hal.structure.identifierDepartment of Biological Sciences
dc.contributor.authorWHITHMAN, T.G.
dc.date.accessioned2022-10-12T12:57:42Z
dc.date.available2022-10-12T12:57:42Z
dc.date.issued2011
dc.identifier.issn1385-0237
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157485
dc.description.abstractEnClimate change-induced droughts have contributed to large-scale die-offs of dominant tree species throughout much of the southwestern United States. These mortality events provide ecologists with the opportunity to determine whether afterlife effects associated with the die-off occur and the potential implications for future ecosystem changes. We studied both the afterlife and interaction effects of condition (dead trees, living trees, and open areas) on understory vegetation in a Juniperus monosperma woodland of northern Arizona 7 years after a major mortality event. Five major findings resulted: (1) there was a positive afterlife effect on understory plants, in which vegetation under dead junipers contained almost double the amount of cover; (2) the competitive effect on understory plants was exemplified by a 1.3 times greater cover and 1.6 additional species in open areas compared to under living junipers; (3) plant community composition significantly differed by aspect and condition; (4) the highly invasive cheatgrass (Bromus tectorum) was 1.5 times greater under dead junipers compared to live junipers; and (5) litter depth and light availability were negatively and positively correlated with plant cover, respectively, but weakly correlated with afterlife effects. Our results indicate that mortality events can promote changes in understory vegetation through afterlife effects. In ecosystems where foundation species suffer high rates of mortality, changes in plant population dynamics and ecosystem function may promote an altered trajectory in community composition with the potential to increase the presence of invasive species. Continued species die-offs associated with climate change-induced drought may contribute to an increased occurrence and legacy of afterlife effects.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectRICHESSE DES ESPÈCES
dc.subjectVÉGÉTATION DE SOUS-BOIS
dc.subject.enAFTERLIFE EFFECTS
dc.subject.enCOMPETITION
dc.subject.enFOUNDATION SPECIES
dc.subject.enRELATIVE INTERACTION INDEX
dc.subject.enSPECIES RICHNESS
dc.subject.enUNDERSTORY VEGETATION
dc.subject.enJUNIPERUS MONOSPERMA
dc.title.enDrought-induced mortality of a foundation species (Juniperus monosperma) promotes positive afterlife effects in understory vegetation
dc.typeArticle de revue
dc.identifier.doi10.1007/s11258-010-9859-x
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement
bordeaux.journalPlant Ecology
bordeaux.page733-741
bordeaux.volume212
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue5
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02644386
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02644386v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20Ecology&rft.date=2011&rft.volume=212&rft.issue=5&rft.spage=733-741&rft.epage=733-741&rft.eissn=1385-0237&rft.issn=1385-0237&rft.au=KANE,%20J.M.&MEINHARDT,%20K.A.&CHANG,%20T.&CARDALL,%20B.L.&MICHALET,%20Richard&rft.genre=article


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