Show simple item record

Authordc.contributor.authorRoot-Bernstein, Meredith 
Authordc.contributor.authorValenzuela, Rafael 
Authordc.contributor.authorHuerta, Maragrita 
Authordc.contributor.authorArmesto, Juan J. 
Authordc.contributor.authorJaksic, Fabián 
Cita de ítemdc.identifier.citationEcosphere february 2017 Volume 8(2) Article e01667es_ES
Abstractdc.description.abstractThe successional pathways linking the Acacia caven-dominated savanna habitat '' espinal '' and the closed sclerophyllous forest of central Chile have long been debated. Previously, espinal was considered an invasive degradation of closed forest that tended toward desertification, could not be restored to forest, and had little ecological value. Recent GIS (Geographical Information System) research on land-use change has, however, detected apparent regeneration of sclerophyllous forest from espinal. This suggests that there is a successional path linking espinal and sclerophyllous forest. Here, we used surveys of transects in espinals and espinal-sclerophyllous forest transitions to ask whether (1) A. caven is an invasive species or a pioneer species, (2) forest regenerates by sclerophyllous trees '' filling in '' spaces between A. caven individuals, and then shading them out (plant-plant competition), or (3) forest regenerates by plant-plant facilitation between A. caven and other species, and (4) how current and historical management and condition affect these potential successional mechanisms. We find that A. caven establishes primarily in full sunlight and is unlikely to degrade forests via invasion. We also find, for the first time, evidence that A. caven is a nurse tree to several sclerophyllous forest tree-beneficiary species. Measurements of the under-canopy microhabitat of A. caven, compared to Lithraea caustica, another possible nurse species, suggest that it provides a balance between shade and soil moisture retention, making it a regeneration site not only for directed bird-dispersed seeds but also for undirected wind-dispersed ones. Conservation and restoration of espinals, especially in drier areas, could provide capacity for future dynamic successional pathways in central Chilees_ES
Patrocinadordc.description.sponsorshipFONDECYT 3130336 BASAL0002-2014 Danish National Research Foundation Niels Bohr Professorship Project Aarhus University Research on the Anthropocene (AURA)es_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectAcacia cavenes_ES
Keywordsdc.subjectLithraea causticaes_ES
Keywordsdc.subjectSclerophyllous forestes_ES
Títulodc.titleAcacia caven nurses endemic sclerophyllous trees along a successional pathway from silvopastoral savanna to forestes_ES
Document typedc.typeArtículo de revistaes_ES
Indexationuchile.indexArtículo de publicación ISIes_ES
Indexationuchile.indexArtículo de publicación SCOPUSes_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile