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Grasslands comprise 85% of Southern Patagonia land area and play a critical role in the global carbon cycle. We evaluated seasonal dynamics to identify differences in soil respiration rates between contrasting grasslands across a climate gradient (rainfall), long term grazing intensity (moderate and high stocking rates) and land uses (silvopastoral system, primary forest and grassland). Soil respiration varied from 0.09 g CO2 h 1 m 2 in winter to a [ver mas...]
dc.contributor.authorPeri, Pablo Luis
dc.contributor.authorBahamonde, Héctor Alejandro
dc.contributor.authorChristiansen, Rodolfo
dc.date.accessioned2018-08-23T17:54:01Z
dc.date.available2018-08-23T17:54:01Z
dc.date.issued2015-08
dc.identifier.issn0140-1963
dc.identifier.otherhttps://doi.org/10.1016/j.jaridenv.2015.03.008
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3167
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0140196315000828?via%3Dihub
dc.description.abstractGrasslands comprise 85% of Southern Patagonia land area and play a critical role in the global carbon cycle. We evaluated seasonal dynamics to identify differences in soil respiration rates between contrasting grasslands across a climate gradient (rainfall), long term grazing intensity (moderate and high stocking rates) and land uses (silvopastoral system, primary forest and grassland). Soil respiration varied from 0.09 g CO2 h 1 m 2 in winter to a maximum of 1.43 g CO2 h 1 m 2 in spring. We found that the soil respiration rate was 30% higher in moderately grazed grasslands than in heavily grazed grasslands. Landuse changes showed that soil respiration followed the order silvopastoral system > native forest > grassland. While almost all plant and soil variables had a significant effect on soil respiration, soil carbon concentration, litter cover and depth and bare soil cover were the main factors explaining 78 e83% of the variance in soil respiration. Soil respiration rates were correlated strongly to air and soil temperatures and to a lesser extent with mean monthly rainfall and soil volumetric water content. The information provided in the present work about soil respiration is essential to estimate carbon balance for a range of important and widespread ecosystems in Patagonia.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceJournal of arid environments 119 : 1-8. (August 2015)eng
dc.subjectRespiración del Sueloes_AR
dc.subjectSoil Respirationeng
dc.subjectPastizaleses_AR
dc.subjectPastureseng
dc.subjectFactores Ambientaleses_AR
dc.subjectEnvironmental Factorseng
dc.subjectUsoses_AR
dc.subjectUseseng
dc.subjectPastoreoes_AR
dc.subjectGrazingeng
dc.subjectSteppeseng
dc.subjectEstepases_AR
dc.subjectSoil Water Contenteng
dc.subjectContenido de Agua en el Sueloes_AR
dc.subjectTemperatureeng
dc.subjectTemperaturaes_AR
dc.subjectSemiarid Zoneseng
dc.subjectZona Semiáridaes_AR
dc.subject.otherRegión Patagónicaes_AR
dc.subject.otherSoil Moistureeng
dc.subject.otherSouthern Patagoniaeng
dc.titleSoil respiration in Patagonian semiarid grasslands under contrasting environmental and use conditionseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.origenEEA Santa Cruzes_AR
dc.description.filFil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Bahamonde, Héctor Alejandro. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.es_AR
dc.description.filFil: Christiansen, Rodolfo. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.es_AR
dc.subtypecientifico


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