Show simple item record

resumen

Abstract
Over 65% of drylands are used for grazing of managed livestock. Understanding what drives grazing effects on the structure and functioning of rangelands is critical for achieving their sustainability. We studied a network of 239 sites across Patagonian rangelands (Argentina), which constitute one of the world's largest rangeland area. We aimed to (i) evaluate how aridity and grazing affect ecosystem structure and functioning and (ii) test the usefulness [ver mas...]
dc.contributor.authorGaitan, Juan Jose
dc.contributor.authorBran, Donaldo Eduardo
dc.contributor.authorOliva, Gabriel Esteban
dc.contributor.authorAguiar, Martín Roberto
dc.contributor.authorBuono, Gustavo Gabriel
dc.contributor.authorFerrante, Daniela
dc.contributor.authorNakamatsu, Viviana Beatriz
dc.contributor.authorCiari, Georgina
dc.contributor.authorSalomone, Jorge Manuel
dc.contributor.authorMassara Paletto, Virginia
dc.contributor.authorGarcia Martinez, Guillermo Carlos
dc.contributor.authorMaestre, Fernando Tomás
dc.date.accessioned2018-03-07T14:53:11Z
dc.date.available2018-03-07T14:53:11Z
dc.date.issued2018-02
dc.identifier.issn1085-3278
dc.identifier.issn1099-145X
dc.identifier.otherhttps://doi.org/10.1002/ldr.2694
dc.identifier.urihttp://hdl.handle.net/20.500.12123/1982
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1002/ldr.2694/full
dc.description.abstractOver 65% of drylands are used for grazing of managed livestock. Understanding what drives grazing effects on the structure and functioning of rangelands is critical for achieving their sustainability. We studied a network of 239 sites across Patagonian rangelands (Argentina), which constitute one of the world's largest rangeland area. We aimed to (i) evaluate how aridity and grazing affect ecosystem structure and functioning and (ii) test the usefulness of the landscape function analysis (LFA) indices (stability, infiltration and nutrient cycling) as surrogates of soil functioning. Aridity decreased species richness and the cover of palatable grasses but increased the cover of palatable shrubs. Grazing pressure negatively impacted the cover of palatable grasses and species richness but did not affect the cover of shrubs. Aridity had direct and indirect negative relationships with the LFA indices. Grazing pressure had no direct effects on the LFA indices but had an indirect negative effect on them by affecting vegetation structure. The LFA indices were positively and negatively correlated with soil organic carbon and sand contents, respectively, suggesting that these indices are useful proxies of soil functional processes in Patagonian rangelands. Our findings indicate that aridity and overgrazing have convergent effects on the structure and functioning of ecosystems, as both promoted reductions in species richness, the cover of palatable grasses and soil functioning. Rangeland management activities should aim to enhance species richness and the cover of palatable grasses, as these actions could contribute to offset adverse effects of ongoing increases in aridity on drylandseng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceLand degradation & development 29 (2) : 210–218. (February 2018)eng
dc.subjectSobrepastoreoes_AR
dc.subjectOvergrazingeng
dc.subjectTierras de Pastoses_AR
dc.subjectRangelandseng
dc.subjectEcosistemaes_AR
dc.subjectEcosystemseng
dc.subjectDesertificaciónes_AR
dc.subjectDesertificationeng
dc.subjectZona Aridaes_AR
dc.subjectArid Zoneseng
dc.subject.otherRegión Patagónicaes_AR
dc.subject.otherAridezes_AR
dc.titleAridity and overgrazing have convergent effects on ecosystem structure and functioning in Patagonian rangelandseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/acceptedVersioneng
dc.description.origenInstituto de Sueloses_AR
dc.description.filFil: Gaitan, Juan Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentinaes_AR
dc.description.filFil: Bran, Donaldo Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentinaes_AR
dc.description.filFil: Oliva, Gabriel Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentinaes_AR
dc.description.filFil: Aguiar, Martin Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentinaes_AR
dc.description.filFil: Buono, Gustavo Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentinaes_AR
dc.description.filFil: Ferrante, Daniela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentinaes_AR
dc.description.filFil: Nakamatsu, Viviana Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentinaes_AR
dc.description.filFil: Ciari, Georgina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Esquel; Argentinaes_AR
dc.description.filFil: Salomone, Jorge Manuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentinaes_AR
dc.description.filFil: Massara Paletto, Virginia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentinaes_AR
dc.description.filFil: Garcia Martinez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Esquel; Argentinaes_AR
dc.description.filFil: Maestre, Fernando T. Universidad Rey Juan Carlos. Escuela Superior de Ciencias Experimentales y Tecnología. Departamento de Biología y Geología, Física y Química Inorgánica; Españaes_AR
dc.subtypecientifico


Files in this item

Thumbnail

This item appears in the following Collection(s)

common

Show simple item record