Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina
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 p...
| Autores principales: | , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Taylor & Francis
2019
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/4965 https://www.tandfonline.com/doi/abs/10.1080/15324982.2017.1349209 https://doi.org/10.1080/15324982.2017.1349209 |
| _version_ | 1855035415145218048 |
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| author | Edwards, Priscila Varela, Santiago Agustin Lopez, Dardo Ruben Willems, Priscila Mabel Lopez, Aldana Gyenge, Javier |
| author_browse | Edwards, Priscila Gyenge, Javier Lopez, Aldana Lopez, Dardo Ruben Varela, Santiago Agustin Willems, Priscila Mabel |
| author_facet | Edwards, Priscila Varela, Santiago Agustin Lopez, Dardo Ruben Willems, Priscila Mabel Lopez, Aldana Gyenge, Javier |
| author_sort | Edwards, Priscila |
| collection | INTA Digital |
| description | 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. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4965 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Taylor & Francis |
| publisherStr | Taylor & Francis |
| record_format | dspace |
| spelling | INTA49652019-04-24T13:30:43Z Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina Edwards, Priscila Varela, Santiago Agustin Lopez, Dardo Ruben Willems, Priscila Mabel Lopez, Aldana Gyenge, Javier Gramíneas Forrajeras Gramineas Conservación de Suelos Zona Árida Feed Grasses Grasses Soil Conservation Arid Zones Poa Ligularis Pappostipa Speciosa Región Patagónica 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. Estación Experimental Agropecuaria Bariloche Fil: Edwards, Priscila. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Varela, Santiago Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barilohe. Área Sistemas Forestales. Grupo de Ecología Forestal; Argentina Fil: Lopez, Dardo Ruben. Instituto Nacional de Tecnología Agropecuaria (INTA). Estacion Experimental Agropecuaria Manfredi. Estación Forestal Villa Dolores; Argentina Fil: Willems, Priscila Mabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Lopez, Aldana Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Gyenge, Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil; Argentina 2019-04-24T13:22:29Z 2019-04-24T13:22:29Z 2017-08-31 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4965 https://www.tandfonline.com/doi/abs/10.1080/15324982.2017.1349209 1532-4982 1532-4990 https://doi.org/10.1080/15324982.2017.1349209 eng info:eu-repo/semantics/restrictedAccess application/pdf Taylor & Francis Arid Land Research and Management 31 (4) : 373-387. (2017) |
| spellingShingle | Gramíneas Forrajeras Gramineas Conservación de Suelos Zona Árida Feed Grasses Grasses Soil Conservation Arid Zones Poa Ligularis Pappostipa Speciosa Región Patagónica Edwards, Priscila Varela, Santiago Agustin Lopez, Dardo Ruben Willems, Priscila Mabel Lopez, Aldana Gyenge, Javier Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina |
| title | Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina |
| title_full | Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina |
| title_fullStr | Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina |
| title_full_unstemmed | Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina |
| title_short | Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina |
| title_sort | evidence on the response of patagonian forage grasses to the mulching effect of recent tephra deposits in argentina |
| topic | Gramíneas Forrajeras Gramineas Conservación de Suelos Zona Árida Feed Grasses Grasses Soil Conservation Arid Zones Poa Ligularis Pappostipa Speciosa Región Patagónica |
| url | http://hdl.handle.net/20.500.12123/4965 https://www.tandfonline.com/doi/abs/10.1080/15324982.2017.1349209 https://doi.org/10.1080/15324982.2017.1349209 |
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