dc.creatorViglizzo, Ernesto Francisco
dc.creatorNosetto, Marcelo Daniel
dc.creatorJobbagy Gampel, Esteban Gabriel
dc.creatorRicard, Maria Florencia
dc.creatorFrank, Federico Carlos
dc.date.accessioned2019-04-22T14:24:53Z
dc.date.accessioned2023-03-15T13:59:25Z
dc.date.available2019-04-22T14:24:53Z
dc.date.available2023-03-15T13:59:25Z
dc.date.created2019-04-22T14:24:53Z
dc.date.issued2015-07
dc.identifier1936-0592
dc.identifierhttps://doi.org/10.1002/eco.1540
dc.identifierhttp://hdl.handle.net/20.500.12123/4943
dc.identifierhttps://onlinelibrary.wiley.com/doi/full/10.1002/eco.1540
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/6208114
dc.description.abstractA vast body of literature demonstrated that anthropogenic disturbances such as overgrazing and fire are key drivers of abrupt transition between vegetation types in ecosystems. In this study, we propose that the hydrological context (described in terms of rainfall, evapotranspiration and water yield) is a first‐order, primordial determinant of the propensity of ecosystems to undergo transition. This implies that the anthropogenic disturbance is a second‐order determinant that is strongly conditioned by the first one. Through the meta‐analysis of existing studies, a collection of 685 geo‐referenced study cases was organized to study the hydrological characteristics of three climatic regions and three ecosystems that vary in their relation between woody and grassy plants. Thus, humid, sub‐humid and dry climatic regions, respectively, receiving >1000, 500–1000 and <500 mm year−1, were studied, and possible transition mechanisms among grasslands/savannas, shrublands and forests were analysed. The results showed that the ecohydrological context determines the probabilities of ecosystems transitions in different climatic regions and the prevalence of alternative transition mechanisms. We showed that transition of forests into other ecosystems is highly improbable in high‐precipitation regions, more probable and likely subject to a bi‐stable and reversible regime in sub‐humid regions, and highly probable and irreversible in dry regions. Factors such as runoff, deep‐water drainage, fire, flammable/nonflammable biomass and overgrazing were considered as hypothetical transition mechanisms. As a novel finding, we demonstrate that ecohydrology, as a determinant of transition, is a factor that operates at a hierarchical level higher than that of the human‐driven disturbance. A synthetic graphical model was proposed to characterize resilience (the capacity of ecosystems to withstand transition) in the three study climatic regions.
dc.languageeng
dc.publisherWiley
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceEcohydrology 8 (5) : 911-921. (July 2015)
dc.subjectHydrology
dc.subjectEcosystems
dc.subjectEvapotranspiration
dc.subjectResilience
dc.subjectAnthropogenic Factors
dc.subjectWoody Plants
dc.subjectHidrología
dc.subjectEcosistema
dc.subjectEvapotranspiración
dc.subjectResiliencia Frente a Impactos y Crisis
dc.subjectFactores Antropogénicos
dc.subjectPlantas Leñosas
dc.titleThe ecohydrology of ecosystem transitions: a meta‐analysis
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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