Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics
The dry subtropics are subject to a rapid expansion of crops and pastures over vast areas of natural woodlands and savannas. In this paper, we explored the effect of this transformation on vegetation productivity (magnitude, and seasonal and long-term variability) along aridity gradients which span...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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2018
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| Acceso en línea: | http://journals.plos.org/plosone/article/authors?id=10.1371/journal.pone.0168168 http://hdl.handle.net/20.500.12123/2167 https://doi.org/10.1371/journal.pone.0168168 |
| _version_ | 1855483006638096384 |
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| author | Baldi, Germán Texeira González, Marcos Alexis Murray, Francisco Jobbagy Gampel, Esteban Gabriel |
| author_browse | Baldi, Germán Jobbagy Gampel, Esteban Gabriel Murray, Francisco Texeira González, Marcos Alexis |
| author_facet | Baldi, Germán Texeira González, Marcos Alexis Murray, Francisco Jobbagy Gampel, Esteban Gabriel |
| author_sort | Baldi, Germán |
| collection | INTA Digital |
| description | The dry subtropics are subject to a rapid expansion of crops and pastures over vast areas of natural woodlands and savannas. In this paper, we explored the effect of this transformation on vegetation productivity (magnitude, and seasonal and long-term variability) along aridity gradients which span from semiarid to subhumid conditions, considering exclusively those areas with summer rains (>66%). Vegetation productivity was characterized with the proxy metric “Enhanced Vegetation Index” (EVI) (2000 to 2012 period), on 6186 natural and cultivated sampling points on five continents, and combined with a global climatology database by means of additive models for quantile regressions. Globally and regionally, cultivation amplified the seasonal and inter-annual variability of EVI without affecting its magnitude. Natural and cultivated systems maintained a similar and continuous increase of EVI with increasing water availability, yet achieved through contrasting ways. In natural systems, the productivity peak and the growing season length displayed concurrent steady increases with water availability, while in cultivated systems the productivity peak increased from semiarid to dry-subhumid conditions, and stabilized thereafter giving place to an increase in the growing season length towards wetter conditions. Our results help to understand and predict the ecological impacts of deforestation on vegetation productivity, a key ecosystem process linked to a broad range of services. |
| format | Artículo |
| id | INTA2167 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA21672019-03-27T13:57:40Z Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics Baldi, Germán Texeira González, Marcos Alexis Murray, Francisco Jobbagy Gampel, Esteban Gabriel Vegetación Disponibilidad del Agua Cultivo en Tierras Aridas Vegetation Water Availability Dry Farming The dry subtropics are subject to a rapid expansion of crops and pastures over vast areas of natural woodlands and savannas. In this paper, we explored the effect of this transformation on vegetation productivity (magnitude, and seasonal and long-term variability) along aridity gradients which span from semiarid to subhumid conditions, considering exclusively those areas with summer rains (>66%). Vegetation productivity was characterized with the proxy metric “Enhanced Vegetation Index” (EVI) (2000 to 2012 period), on 6186 natural and cultivated sampling points on five continents, and combined with a global climatology database by means of additive models for quantile regressions. Globally and regionally, cultivation amplified the seasonal and inter-annual variability of EVI without affecting its magnitude. Natural and cultivated systems maintained a similar and continuous increase of EVI with increasing water availability, yet achieved through contrasting ways. In natural systems, the productivity peak and the growing season length displayed concurrent steady increases with water availability, while in cultivated systems the productivity peak increased from semiarid to dry-subhumid conditions, and stabilized thereafter giving place to an increase in the growing season length towards wetter conditions. Our results help to understand and predict the ecological impacts of deforestation on vegetation productivity, a key ecosystem process linked to a broad range of services. EEA San Luis 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: Texeira González, Marcos Alexis. 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; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina. Fil: Murray, Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis. Agencia de Extensión Rural San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina 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 2018-04-04T15:56:05Z 2018-04-04T15:56:05Z 2016-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://journals.plos.org/plosone/article/authors?id=10.1371/journal.pone.0168168 http://hdl.handle.net/20.500.12123/2167 1932-6203 https://doi.org/10.1371/journal.pone.0168168 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf PLoS ONE 11 (12) : e0168168 (December 2016) |
| spellingShingle | Vegetación Disponibilidad del Agua Cultivo en Tierras Aridas Vegetation Water Availability Dry Farming Baldi, Germán Texeira González, Marcos Alexis Murray, Francisco Jobbagy Gampel, Esteban Gabriel Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics |
| title | Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics |
| title_full | Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics |
| title_fullStr | Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics |
| title_full_unstemmed | Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics |
| title_short | Vegetation Productivity in Natural vs. Cultivated Systems along Water Availability Gradients in the Dry Subtropics |
| title_sort | vegetation productivity in natural vs cultivated systems along water availability gradients in the dry subtropics |
| topic | Vegetación Disponibilidad del Agua Cultivo en Tierras Aridas Vegetation Water Availability Dry Farming |
| url | http://journals.plos.org/plosone/article/authors?id=10.1371/journal.pone.0168168 http://hdl.handle.net/20.500.12123/2167 https://doi.org/10.1371/journal.pone.0168168 |
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