INCITAP 20787
INSTITUTO DE CIENCIAS DE LA TIERRA Y AMBIENTALES DE LA PAMPA
Unidad Ejecutora - UE
artículos
Título:
The ecohydrology of ecosystem transitions: A meta-analysis
Autor/es:
VIGLIZZO, ERNESTO FRANCISCO; NOSETTO, MARCELO; JOBBÁGY, ESTEBAN GABRIEL; RICARD, MARÍA FLORENCIA; FRANK, FEDERICO CARLOS
Revista:
ECOHYDROLOGY
Editorial:
JOHN WILEY & SONS INC
Referencias:
Año: 2014
ISSN:
1936-0584
Resumen:
A 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
