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Resumen
In the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. Therefore, grazing could reduce soil water availability in the superficial layer, mostly affected by evaporation, but could increase it in the subsurface layers, mostly affected by transpiration. Our hypothesis is that such effects [ver mas...]
dc.contributor.authorGolluscio, Rodolfo Ángel
dc.contributor.authorGarcia Martinez, Guillermo Carlos
dc.contributor.authorCavagnaro, Fernando Pablo
dc.date.accessioned2022-06-06T10:56:14Z
dc.date.available2022-06-06T10:56:14Z
dc.date.issued2022-06-01
dc.identifier.issn0140-1963
dc.identifier.otherhttps://doi.org/10.1016/j.jaridenv.2022.104800
dc.identifier.urihttp://hdl.handle.net/20.500.12123/12021
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0140196322000957
dc.description.abstractIn the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. Therefore, grazing could reduce soil water availability in the superficial layer, mostly affected by evaporation, but could increase it in the subsurface layers, mostly affected by transpiration. Our hypothesis is that such effects would be most evident in the bare soil spaces, with higher evaporative losses and lower root density than vegetated microsites. Therefore, we analyzed the proportion of four microsites (shrubs, bare soil, preferred- and unpreferred grasses), and their soil water availability at 0–5 and 5–15 cm depth in four sampling areas, each one with an ungrazed, a moderately- and an intensely-grazed site. Our results supported the initial hypothesis: bare soil microsites had the lowest surface, but the highest subsurface water availability. However, grazing did not cause any change in the mean soil water availability (net effect) because it did not affect soil water availability in any microsite and depth (direct effects), and only caused a replacement of preferred-by unpreferred grasses (indirect effects), two groups that induced small differences in water availability.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceJournal of Arid Environments 205 : 104800. (October 2022)es_AR
dc.subjectDesertificaciónes_AR
dc.subjectDesertificationeng
dc.subjectPastoreoes_AR
dc.subjectGrazingeng
dc.subjectEvaporaciónes_AR
dc.subjectEvaporationeng
dc.subjectTranspiraciónes_AR
dc.subjectTranspirationeng
dc.subjectDisponibilidad del Aguaes_AR
dc.subjectWater Availabilityeng
dc.subjectCaracterísticas del Sitioes_AR
dc.subjectSite Factorseng
dc.subjectEstepases_AR
dc.subjectSteppeseng
dc.subject.otherRegión Patagónicaes_AR
dc.titleHow does grazing affect soil water availability in the Patagonian steppe?es_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Esqueles_AR
dc.description.filFil: Golluscio, Rodolfo Ángel. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentinaes_AR
dc.description.filFil: Golluscio, Rodolfo Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Golluscio, Rodolfo Ángel. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a La Agricultura (IFEVA); Argentinaes_AR
dc.description.filFil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentinaes_AR
dc.description.filFil: Cavagnaro, Fernando Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentinaes_AR
dc.subtypecientifico


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