Rainwater harvesting in Dry Chaco: Regional distribution and local water balance
Rainwater harvesting (RWH) has been essential for the establishment of human settlements in many dry regions of the world that lacked suitable surface or groundwater resources. A vast fraction of the South American Dry Chaco ecoregion still relies on RWH to support, not only livestock production, bu...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
2018
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/2172 https://www.sciencedirect.com/science/article/pii/S0140196315000865 https://doi.org/10.1016/j.jaridenv.2015.03.012 |
| _version_ | 1855483007427674112 |
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| author | Magliano, Patricio Nicolás Murray, Francisco Baldi, Germán Aurand, Santiago Javier Páez, Ricardo Andrés Harder, Wilbert Jobbagy Gampel, Esteban Gabriel |
| author_browse | Aurand, Santiago Javier Baldi, Germán Harder, Wilbert Jobbagy Gampel, Esteban Gabriel Magliano, Patricio Nicolás Murray, Francisco Páez, Ricardo Andrés |
| author_facet | Magliano, Patricio Nicolás Murray, Francisco Baldi, Germán Aurand, Santiago Javier Páez, Ricardo Andrés Harder, Wilbert Jobbagy Gampel, Esteban Gabriel |
| author_sort | Magliano, Patricio Nicolás |
| collection | INTA Digital |
| description | Rainwater harvesting (RWH) has been essential for the establishment of human settlements in many dry regions of the world that lacked suitable surface or groundwater resources. A vast fraction of the South American Dry Chaco ecoregion still relies on RWH to support, not only livestock production, but domestic and industrial uses as well. As a result, water capture and storage infrastructure is widely disseminated throughout the region. In this paper we characterized the most typical RWH systems in two contrastingly developed sub-regions of Dry Chaco, ranging from extensive ranching to intensive beef and dairy production (central Argentina and western Paraguay, respectively). In each sub-region, we quantified RWH systems density, spatial distribution and associations with landscape features; furthermore, we illustrated how the daily dynamic of water stock in a typical RWH system contributes to assess their capture and storage efficiency. We found that randomly distributed low sophisticated RWH systems prevailed in central Argentina, while clustered distributed high sophisticated ones were more common in western Paraguay. RWH systems density was ten times higher in western Paraguay (0.94 vs. 0.098 units/km2), showing an exponential association with land cleared fraction and proximity to villages. The daily dynamic of water stock of the RWH impoundment showed that water harvest events were exponentially associated with precipitation magnitude events (R2 = 0.86), while annual water losses were explained by infiltration and evaporation fluxes (59 vs. 41%, respectively). Across both sub-regions, RWH accounts for less than 1% of the annual precipitation, playing a minor role on the regional water balance; however at a local level, they can affect several hydrological fluxes including the onset of groundwater recharge and the mitigation of extreme runoff events. |
| format | Artículo |
| id | INTA2172 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA21722023-07-03T12:24:37Z Rainwater harvesting in Dry Chaco: Regional distribution and local water balance Magliano, Patricio Nicolás Murray, Francisco Baldi, Germán Aurand, Santiago Javier Páez, Ricardo Andrés Harder, Wilbert Jobbagy Gampel, Esteban Gabriel Agua de Lluvia Balance Hídrico Escorrentia Zonas Aridas Rainwater Rain Water Management Water Balance Runoff Arid Zones Gestión del Agua de Lluvia Región Chaco Arido, Argentina Rainwater harvesting (RWH) has been essential for the establishment of human settlements in many dry regions of the world that lacked suitable surface or groundwater resources. A vast fraction of the South American Dry Chaco ecoregion still relies on RWH to support, not only livestock production, but domestic and industrial uses as well. As a result, water capture and storage infrastructure is widely disseminated throughout the region. In this paper we characterized the most typical RWH systems in two contrastingly developed sub-regions of Dry Chaco, ranging from extensive ranching to intensive beef and dairy production (central Argentina and western Paraguay, respectively). In each sub-region, we quantified RWH systems density, spatial distribution and associations with landscape features; furthermore, we illustrated how the daily dynamic of water stock in a typical RWH system contributes to assess their capture and storage efficiency. We found that randomly distributed low sophisticated RWH systems prevailed in central Argentina, while clustered distributed high sophisticated ones were more common in western Paraguay. RWH systems density was ten times higher in western Paraguay (0.94 vs. 0.098 units/km2), showing an exponential association with land cleared fraction and proximity to villages. The daily dynamic of water stock of the RWH impoundment showed that water harvest events were exponentially associated with precipitation magnitude events (R2 = 0.86), while annual water losses were explained by infiltration and evaporation fluxes (59 vs. 41%, respectively). Across both sub-regions, RWH accounts for less than 1% of the annual precipitation, playing a minor role on the regional water balance; however at a local level, they can affect several hydrological fluxes including the onset of groundwater recharge and the mitigation of extreme runoff events. EEA San Luis Fil: Magliano, Patricio Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis. Grupo de Estudios Ambientales; Argentina. Universidad Nacional de San Luis; Argentina Fil: Murray, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis. Agencia de Extensión Rural San Luis; Argentina Fil: Baldi, Germán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis. Grupo de Estudios Ambientales; Argentina. Universidad Nacional de San Luis; Argentina Fil: Aurand, Santiago Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentina Fil; Harder, Wilbert. Servicio Agropecuario Paraguayo – Chortitzer Komitee; Paraguay Fil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis. Grupo de Estudios Ambientales; Argentina. Universidad Nacional de San Luis; Argentina 2018-04-05T12:47:37Z 2018-04-05T12:47:37Z 2015-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/2172 https://www.sciencedirect.com/science/article/pii/S0140196315000865 0140-1963 https://doi.org/10.1016/j.jaridenv.2015.03.012 eng info:eu-repo/semantics/restrictedAccess application/pdf Journal of Arid Environments 123 : 93-102 (December 2015) |
| spellingShingle | Agua de Lluvia Balance Hídrico Escorrentia Zonas Aridas Rainwater Rain Water Management Water Balance Runoff Arid Zones Gestión del Agua de Lluvia Región Chaco Arido, Argentina Magliano, Patricio Nicolás Murray, Francisco Baldi, Germán Aurand, Santiago Javier Páez, Ricardo Andrés Harder, Wilbert Jobbagy Gampel, Esteban Gabriel Rainwater harvesting in Dry Chaco: Regional distribution and local water balance |
| title | Rainwater harvesting in Dry Chaco: Regional distribution and local water balance |
| title_full | Rainwater harvesting in Dry Chaco: Regional distribution and local water balance |
| title_fullStr | Rainwater harvesting in Dry Chaco: Regional distribution and local water balance |
| title_full_unstemmed | Rainwater harvesting in Dry Chaco: Regional distribution and local water balance |
| title_short | Rainwater harvesting in Dry Chaco: Regional distribution and local water balance |
| title_sort | rainwater harvesting in dry chaco regional distribution and local water balance |
| topic | Agua de Lluvia Balance Hídrico Escorrentia Zonas Aridas Rainwater Rain Water Management Water Balance Runoff Arid Zones Gestión del Agua de Lluvia Región Chaco Arido, Argentina |
| url | http://hdl.handle.net/20.500.12123/2172 https://www.sciencedirect.com/science/article/pii/S0140196315000865 https://doi.org/10.1016/j.jaridenv.2015.03.012 |
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