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Acacia tortilis (Forssk.) subsp. raddiana (Savi) Brenan as a foundation species: a test from the arid zone of Tunisia

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierUniversité de Sfax
dc.contributor.authorNOUMI, Zouhaier
hal.structure.identifierUniversité de Sfax
dc.contributor.authorABDALLAH, Lotfi
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorTOUZARD, Blaise
hal.structure.identifierUniversité de Sfax
dc.contributor.authorCHAIEB, Mohamed
dc.date.accessioned2022-10-12T12:51:01Z
dc.date.available2022-10-12T12:51:01Z
dc.date.issued2012
dc.identifier.issn1036-9872
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157329
dc.description.abstractEnThe geographic distribution of Acacia tortilis (Forssk.) Hayne subsp. raddiana (Savi) Brenan in Tunisia, is limited to the Bou-Hedma region (Bled Talah) where the National Park of Bou-Hedma, a UNESCO (1986) biosphere reserve, is located. We have tested the hypothesis that A. tortilis acts as a foundation species as a result of the improvement of soil conditions under its canopy (soil water availability and nutrient enrichment). The herbaceous community (floristic composition, species density, species richness) and soil characteristics (soil nutrients and soil water) were sampled using the quadrat method beneath and between 16 adult trees of A. tortilis with both northwards and southwards (south and north sides) and eight open areas among the trees. Results showed that A. tortilis trees improve soil water availability, the nutrient status of soil (organic matter, total carbon, total nitrogen, extractable phosphorus), and has a positive effect on the understorey vegetation under arid conditions. No significant differences in species richness were observed between the north subhabitats and the south subhabitats.
dc.language.isoen
dc.publisherCSIRO Publishing
dc.subjectexposition
dc.subjectsoil enrichment
dc.subjectdisponibilité du sol en eau
dc.subjectrichesse des espèces
dc.subject.enacacia tortilis
dc.subject.enacacia raddiana
dc.subject.enopen areas
dc.subject.ensoil water availability
dc.subject.entree canopies
dc.subject.enenrichissement du sol
dc.title.enAcacia tortilis (Forssk.) subsp. raddiana (Savi) Brenan as a foundation species: a test from the arid zone of Tunisia
dc.typeArticle de revue
dc.identifier.doi10.1071/RJ11053
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalRangeland Journal
bordeaux.page17-25
bordeaux.volume34
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue1
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02652085
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02652085v1
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