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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)
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dc.contributor.author | Edwards, Priscila | |
dc.contributor.author | Varela, Santiago Agustin | |
dc.contributor.author | Lopez, Dardo Ruben | |
dc.contributor.author | Willems, Priscila Mabel | |
dc.contributor.author | Lopez, Aldana | |
dc.contributor.author | Gyenge, Javier | |
dc.date.accessioned | 2019-04-24T13:22:29Z | |
dc.date.available | 2019-04-24T13:22:29Z | |
dc.date.issued | 2017-08-31 | |
dc.identifier.issn | 1532-4982 | |
dc.identifier.issn | 1532-4990 | |
dc.identifier.other | https://doi.org/10.1080/15324982.2017.1349209 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/4965 | |
dc.identifier.uri | https://www.tandfonline.com/doi/abs/10.1080/15324982.2017.1349209 | |
dc.description.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) 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.format | application/pdf | es_AR |
dc.language.iso | eng | es_AR |
dc.publisher | Taylor & Francis | es_AR |
dc.rights | info:eu-repo/semantics/restrictedAccess | es_AR |
dc.source | Arid Land Research and Management 31 (4) : 373-387. (2017) | es_AR |
dc.subject | Gramíneas Forrajeras | es_AR |
dc.subject | Feed Grasses | eng |
dc.subject | Gramineas | es_AR |
dc.subject | Grasses | eng |
dc.subject | Conservación de Suelos | es_AR |
dc.subject | Soil Conservation | eng |
dc.subject | Zona Árida | es_AR |
dc.subject | Arid Zones | eng |
dc.subject.other | Poa Ligularis | es_AR |
dc.subject.other | Pappostipa Speciosa | es_AR |
dc.subject.other | Región Patagónica | es_AR |
dc.title | Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina | es_AR |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | es_AR |
dc.type | info:eu-repo/semantics/publishedVersion | es_AR |
dc.description.origen | Estación Experimental Agropecuaria Bariloche | es_AR |
dc.description.fil | Fil: Edwards, Priscila. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.description.fil | Fil: Varela, Santiago Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barilohe. Área Sistemas Forestales. Grupo de Ecología Forestal; Argentina | es_AR |
dc.description.fil | Fil: Lopez, Dardo Ruben. Instituto Nacional de Tecnología Agropecuaria (INTA). Estacion Experimental Agropecuaria Manfredi. Estación Forestal Villa Dolores; Argentina | es_AR |
dc.description.fil | Fil: Willems, Priscila Mabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina | es_AR |
dc.description.fil | Fil: Lopez, Aldana Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.description.fil | Fil: Gyenge, Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil; Argentina | es_AR |
dc.subtype | cientifico |
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