Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

Publications des scientifiques de l'IRD

Danet A., Kefi S., Meneses R. I., Anthelme Fabien. (2017). Nurse species and indirect facilitation through grazing drive plant community functional traits in tropical alpine peatlands. Ecology and Evolution, 7 (24), 11265-11276. ISSN 2045-7758

Fichier PDF disponible http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-01/010071949.pdf

Lien direct chez l'éditeur doi:10.1002/ece3.3537

Titre
Nurse species and indirect facilitation through grazing drive plant community functional traits in tropical alpine peatlands
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000418824800069
AuteursDanet A., Kefi S., Meneses R. I., Anthelme Fabien.
SourceEcology and Evolution, 2017, 7 (24), p. 11265-11276. ISSN 2045-7758
RésuméFacilitation among plants mediated by grazers occurs when an unpalatable plant extends its protection against grazing to another plant. This type of indirect facilitation impacts species coexistence and ecosystem functioning in a large array of ecosystems worldwide. It has nonetheless generally been understudied so far in comparison with the role played by direct facilitation among plants. We aimed at providing original data on indirect facilitation at the community scale to determine the extent to which indirect facilitation mediated by grazers can shape plant communities. Such experimental data are expected to contribute to refining the conceptual framework on plant-plant-herbivore interactions in stressful environments. We set up a 2-year grazing exclusion experiment in tropical alpine peatlands in Bolivia. Those ecosystems depend entirely on a few, structuring cushion-forming plants (hereafter referred to as nurse species), in which associated plant communities develop. Fences have been set over two nurse species with different strategies to cope with grazing (direct vs. indirect defenses), which are expected to lead to different intensities of indirect facilitation for the associated communities. We collected functional traits which are known to vary according to grazing pressure (LDMC, leaf thickness, and maximum height), on both the nurse and their associated plant communities in grazed (and therefore indirect facilitation as well) and ungrazed conditions. We found that the effect of indirectly facilitated on the associated plant communities depended on the functional trait considered. Indirect facilitation decreased the effects of grazing on species relative abundance, mean LDMC, and the convergence of the maximum height distribution of the associated communities, but did not affect mean height or cover. The identity of the nurse species and grazing jointly affected the structure of the associated plant community through indirect facilitation. Our results together with the existing literature suggest that the grazer-nurse-beneficiary interaction module can be more complex than expected when evaluated in the field.
Plan de classementSciences du monde végétal [076] ; Etudes, transformation, conservation du milieu naturel [082]
Descr. géo.BOLIVIE ; CORDILLERA REAL
LocalisationFonds IRD [F B010071949]
Identifiant IRDfdi:010071949
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010071949

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Nouméa

Papeete

Niamey

Ouagadougou

Tunis

La Paz

Quito