Mostrar el registro sencillo del ítem
dc.contributor.author
Bisigato, Alejandro Jorge
dc.contributor.author
Lopez Laphitz, Rita Maria
dc.date.available
2020-02-05T21:23:05Z
dc.date.issued
2009-08
dc.identifier.citation
Bisigato, Alejandro Jorge; Lopez Laphitz, Rita Maria; Ecohydrological effects of grazing-induced degradation in the Patagonian Monte, Argentina; Wiley Blackwell Publishing, Inc; Austral Ecology; 34; 5; 8-2009; 545-557
dc.identifier.issn
1442-9985
dc.identifier.uri
http://hdl.handle.net/11336/96794
dc.description.abstract
Water-limited ecosystems have undergone rapid change as a consequence of changing land use and climate. The consequences of these changes on soil quality and vegetation dynamics have been documented in different regions of the world. In contrast, their effects on soil water, the most limiting resource in these environments, have received less attention, although in recent years increasing efforts have been made to relate grazing, soil water and vegetation functioning. In this paper, we present the results of field observations of plant phenology and soil water content carried out during two successive years at four sites along a degradation gradient caused by grazing in the Patagonian Monte, Argentina. We also developed a simplified soil water balance model to evaluate how changes in plant cover could affect water balance. Our field observations showed that the soil water content in the soil layer where roots of grasses are abundant (0-25 cm) was higher and the growing cycles were longer in degraded than in preserved sites. Similarly, our modelling approach showed that the deep soil (depth > 10 cm) was wetter in the degraded than in the preserved situation. Simulation also suggested a switch from transpiration to a direct evaporation dominance of water losses with degradation. Although reductions in plant cover related to grazing degradation were associated with a decrease in annual transpiration, the simulated soil water loss by transpiration was higher during summer in the degraded than in the well preserved situation. Thus, our field observations seem to be a consequence of ecohydrological changes causing an accumulation of water in the soil profile during the cold season and its transpiration during summer. In conclusion, our results showed that changes in plant cover caused by grazing disturbance can alter the soil water balance, which in turn can affect vegetation function.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DESERTIFICATION
dc.subject
MONTE DESERT
dc.subject
PATAGONIA
dc.subject
PLANT COVER
dc.subject
SOIL WATER BALANCE
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Ecohydrological effects of grazing-induced degradation in the Patagonian Monte, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-12-12T14:49:16Z
dc.journal.volume
34
dc.journal.number
5
dc.journal.pagination
545-557
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Bisigato, Alejandro Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Lopez Laphitz, Rita Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.journal.title
Austral Ecology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1442-9993.2009.01958.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/j.1442-9993.2009.01958.x
Archivos asociados