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Abstract
In Patagonia, arid and semiarid lands are being affected both by inappropriate management practices, which are leading to degradation, and by volcanic activity, whose effects are still unclear. This study aimed to test whether superficial deposition of volcanic tephra could benefit two of the most prominent Patagonian forage grass species (Poa ligularis and Pappostipa speciosa var. speciosa). Pots with P. ligularis and P. speciosa were kept under wet (W) [ver mas...]
dc.contributor.authorEdwards, Priscila
dc.contributor.authorVarela, Santiago Agustin
dc.contributor.authorLopez, Dardo Ruben
dc.contributor.authorWillems, Priscila Mabel
dc.contributor.authorLopez, Aldana
dc.contributor.authorGyenge, Javier
dc.date.accessioned2019-04-24T13:22:29Z
dc.date.available2019-04-24T13:22:29Z
dc.date.issued2017-08-31
dc.identifier.issn1532-4982
dc.identifier.issn1532-4990
dc.identifier.otherhttps://doi.org/10.1080/15324982.2017.1349209
dc.identifier.urihttp://hdl.handle.net/20.500.12123/4965
dc.identifier.urihttps://www.tandfonline.com/doi/abs/10.1080/15324982.2017.1349209
dc.description.abstractIn Patagonia, arid and semiarid lands are being affected both by inappropriate management practices, which are leading to degradation, and by volcanic activity, whose effects are still unclear. This study aimed to test whether superficial deposition of volcanic tephra could benefit two of the most prominent Patagonian forage grass species (Poa ligularis and Pappostipa speciosa var. speciosa). Pots with P. ligularis and P. speciosa were kept under wet (W) and dry (D) conditions in the presence (T+) or absence (T−) of tephra for 105 days, and then were all well-watered. We determined the effects of tephra on soil water retention and conservation, soil moisture content (% v/v), plant growth, stomatal conductance (gs), and gs recovery capacity. The water regime significantly affected both species performance and gs. The presence of tephra increased soil water conservation, soil moisture content in wet conditions, and P. ligularis gs in wet conditions, and decreased senescence in dry conditions (9% in P. ligularis and 16% in P. speciosa). The presence of tephra allowed roots to grow in 8/10 and 2/10 pots in W conditions for P. ligularis and P. speciosa, respectively, and in only 1/10 pots in D conditions, only for P. ligularis. Tephra was also associated with gs recovery after dry conditions. Poa ligularis was more positively affected by tephra than P. speciosa, probably because P. ligularis has higher phenotypic plasticity. The positive effects of tephra may increase the resilience and resistance of P. speciosa and P. ligularis to periods of water shortage.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherTaylor & Francises_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceArid Land Research and Management 31 (4) : 373-387. (2017)es_AR
dc.subjectGramíneas Forrajerases_AR
dc.subjectFeed Grasseseng
dc.subjectGramineases_AR
dc.subjectGrasseseng
dc.subjectConservación de Sueloses_AR
dc.subjectSoil Conservationeng
dc.subjectZona Áridaes_AR
dc.subjectArid Zoneseng
dc.subject.otherPoa Ligularises_AR
dc.subject.otherPappostipa Speciosaes_AR
dc.subject.otherRegión Patagónicaes_AR
dc.titleEvidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentinaes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEstación Experimental Agropecuaria Barilochees_AR
dc.description.filFil: Edwards, Priscila. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Varela, Santiago Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barilohe. Área Sistemas Forestales. Grupo de Ecología Forestal; Argentinaes_AR
dc.description.filFil: Lopez, Dardo Ruben. Instituto Nacional de Tecnología Agropecuaria (INTA). Estacion Experimental Agropecuaria Manfredi. Estación Forestal Villa Dolores; Argentinaes_AR
dc.description.filFil: Willems, Priscila Mabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentinaes_AR
dc.description.filFil: Lopez, Aldana Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Gyenge, Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil; Argentinaes_AR
dc.subtypecientifico


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