The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia

Grazing is an economically important activity in Southern Patagonia’s steppe and woodland ecosystems. In the past, emphasis has been on maximizing the provisioning capacity of these ecosystems with little concern for the longer term conservation of the ecosystem services related to climate regulat...

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Autores principales: Peri, Pablo Luis, Ladd, Brenton, Lasagno, Romina Gisele, Martínez Pastur, Guillermo José
Formato: Artículo
Lenguaje:Inglés
Publicado: Elsevier 2018
Materias:
Acceso en línea:http://hdl.handle.net/20.500.12123/3168
https://www.sciencedirect.com/science/article/pii/S0140196316301185?via%3Dihub
https://doi.org/10.1016/j.jaridenv.2016.06.017
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author Peri, Pablo Luis
Ladd, Brenton
Lasagno, Romina Gisele
Martínez Pastur, Guillermo José
author_browse Ladd, Brenton
Lasagno, Romina Gisele
Martínez Pastur, Guillermo José
Peri, Pablo Luis
author_facet Peri, Pablo Luis
Ladd, Brenton
Lasagno, Romina Gisele
Martínez Pastur, Guillermo José
author_sort Peri, Pablo Luis
collection INTA Digital
description Grazing is an economically important activity in Southern Patagonia’s steppe and woodland ecosystems. In the past, emphasis has been on maximizing the provisioning capacity of these ecosystems with little concern for the longer term conservation of the ecosystem services related to climate regulation, like carbon sequestration. This is changing rapidly as livestock producers in the region work to develop a certification scheme for sustainable land management for Patagonians rangelands. This study is a scientific contribution towards this broader social objective in which we test whether soil C concentration in topsoil (10 cm depth) can be used as an indicator of rangeland condition. Data on climate, soil chemistry, topography, ecosystem type and stocking rates were obtained from the PEBANPA network of permanent plots database for 145 sites across Southern Patagonia. These variables were used as independent variables in a partial least squares regression in which top soil C was the dependent variable. The effects of land use (stocking rate) on top soil C were barely detectable at the regional scale in Patagonia. Top soil C was however strongly associated with other independent variables, notably soil chemistry and climate variables and also vegetation type. Thus, changes in land use management may not have a significant impact on soil carbon sequestration in these types of ecosystems. This may be because many factors interact to determine top soil C such that the footprint of overgrazing on top soil C is drowned out at the regional scale by other variables. This highlights the need for further work to develop indicators for sustainable land management in the region.
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spelling INTA31682021-07-08T11:38:16Z The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia Peri, Pablo Luis Ladd, Brenton Lasagno, Romina Gisele Martínez Pastur, Guillermo José Carbono Intensidad de Pastoreo Topografía Propiedades Superficie del Suelo Vegetación Clima Estepas Carbon Grazing Intensity Topography Soil Surface Properties Vegetation Climate Steppes Top Soil Capa Arable del Suelo Región Patagónica Tipos de Vegetación Southern Patagonia Grazing is an economically important activity in Southern Patagonia’s steppe and woodland ecosystems. In the past, emphasis has been on maximizing the provisioning capacity of these ecosystems with little concern for the longer term conservation of the ecosystem services related to climate regulation, like carbon sequestration. This is changing rapidly as livestock producers in the region work to develop a certification scheme for sustainable land management for Patagonians rangelands. This study is a scientific contribution towards this broader social objective in which we test whether soil C concentration in topsoil (10 cm depth) can be used as an indicator of rangeland condition. Data on climate, soil chemistry, topography, ecosystem type and stocking rates were obtained from the PEBANPA network of permanent plots database for 145 sites across Southern Patagonia. These variables were used as independent variables in a partial least squares regression in which top soil C was the dependent variable. The effects of land use (stocking rate) on top soil C were barely detectable at the regional scale in Patagonia. Top soil C was however strongly associated with other independent variables, notably soil chemistry and climate variables and also vegetation type. Thus, changes in land use management may not have a significant impact on soil carbon sequestration in these types of ecosystems. This may be because many factors interact to determine top soil C such that the footprint of overgrazing on top soil C is drowned out at the regional scale by other variables. This highlights the need for further work to develop indicators for sustainable land management in the region. EEA Santa Cruz Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Ladd, Brenton. University of New South Wales. School of Biological, Earth and Environmental Sciences. Evolution and Ecology Research Centre; Australia. Universidad Científica del Sur. Facultad de Ciencias Ambientales; Perú Fil: Lasagno, Romina Gisele. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Recursos Agroforestales; Argentina 2018-08-23T18:36:01Z 2018-08-23T18:36:01Z 2016-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/3168 https://www.sciencedirect.com/science/article/pii/S0140196316301185?via%3Dihub 0140-1963 https://doi.org/10.1016/j.jaridenv.2016.06.017 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Journal of arid environments 134 : 73-78. (November 2016)
spellingShingle Carbono
Intensidad de Pastoreo
Topografía
Propiedades Superficie del Suelo
Vegetación
Clima
Estepas
Carbon
Grazing Intensity
Topography
Soil Surface Properties
Vegetation
Climate
Steppes
Top Soil
Capa Arable del Suelo
Región Patagónica
Tipos de Vegetación
Southern Patagonia
Peri, Pablo Luis
Ladd, Brenton
Lasagno, Romina Gisele
Martínez Pastur, Guillermo José
The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia
title The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia
title_full The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia
title_fullStr The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia
title_full_unstemmed The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia
title_short The effects of land management (grazing intensity) vs. the effects of topography, soil properties, vegetation type, and climate on soil carbon concentration in Southern Patagonia
title_sort effects of land management grazing intensity vs the effects of topography soil properties vegetation type and climate on soil carbon concentration in southern patagonia
topic Carbono
Intensidad de Pastoreo
Topografía
Propiedades Superficie del Suelo
Vegetación
Clima
Estepas
Carbon
Grazing Intensity
Topography
Soil Surface Properties
Vegetation
Climate
Steppes
Top Soil
Capa Arable del Suelo
Región Patagónica
Tipos de Vegetación
Southern Patagonia
url http://hdl.handle.net/20.500.12123/3168
https://www.sciencedirect.com/science/article/pii/S0140196316301185?via%3Dihub
https://doi.org/10.1016/j.jaridenv.2016.06.017
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