Spatial and temporal variation of primary production of Patagonian wet meadows
In extra-Andean Patagonia, wet meadows contrast with the prevailing arid steppes, and present a gradient of water availability from the periphery to the center. The objectives of this paper are to describe the spatial and temporal variation of aerial net primary production (ANPP) of Patagonian meado...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2019
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| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0140196310001680 http://hdl.handle.net/20.500.12123/4279 https://doi.org/10.1016/j.jaridenv.2010.05.026 |
| _version_ | 1855483401560129536 |
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| author | Buono, Gustavo Gabriel Oesterheld, Martin Nakamatsu, Viviana Beatriz Paruelo, José María |
| author_browse | Buono, Gustavo Gabriel Nakamatsu, Viviana Beatriz Oesterheld, Martin Paruelo, José María |
| author_facet | Buono, Gustavo Gabriel Oesterheld, Martin Nakamatsu, Viviana Beatriz Paruelo, José María |
| author_sort | Buono, Gustavo Gabriel |
| collection | INTA Digital |
| description | In extra-Andean Patagonia, wet meadows contrast with the prevailing arid steppes, and present a gradient of water availability from the periphery to the center. The objectives of this paper are to describe the spatial and temporal variation of aerial net primary production (ANPP) of Patagonian meadows, and to obtain a model for the relationship between the normalized difference vegetation index (NDVI) and ANPP. We determined ANPP in four regionally scattered meadows during 3–5 years and in three positions of the gradient of water availability. In one meadow, we correlated ANPP with NDVI during 2 years. Annual ANPP was 2–3 times larger in the center than in the periphery, and also varied 2–3 fold among the four meadows. The interannual variation of ANPP was high and similar across meadows and zones. ANPP was closely correlated with NDVI through a linear model. Within the growing season, the central zone had a more extended period of high NDVI into the summer than the peripheral and the intermediate zones. We conclude that (1) the local variation of ANPP across the gradient of water availability is strong and must be taken into account for management, and (2) the highly variable ANPP may be monitored by remote sensing. |
| format | Artículo |
| id | INTA4279 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA42792019-01-16T17:46:37Z Spatial and temporal variation of primary production of Patagonian wet meadows Buono, Gustavo Gabriel Oesterheld, Martin Nakamatsu, Viviana Beatriz Paruelo, José María Praderas Prados de Siega Paisaje Teledetección Variación Estacional Producción Primaria Grasslands Meadows Landscape Remote Sensing Seasonal Variation Primary Production Mallines Región Patagónica In extra-Andean Patagonia, wet meadows contrast with the prevailing arid steppes, and present a gradient of water availability from the periphery to the center. The objectives of this paper are to describe the spatial and temporal variation of aerial net primary production (ANPP) of Patagonian meadows, and to obtain a model for the relationship between the normalized difference vegetation index (NDVI) and ANPP. We determined ANPP in four regionally scattered meadows during 3–5 years and in three positions of the gradient of water availability. In one meadow, we correlated ANPP with NDVI during 2 years. Annual ANPP was 2–3 times larger in the center than in the periphery, and also varied 2–3 fold among the four meadows. The interannual variation of ANPP was high and similar across meadows and zones. ANPP was closely correlated with NDVI through a linear model. Within the growing season, the central zone had a more extended period of high NDVI into the summer than the peripheral and the intermediate zones. We conclude that (1) the local variation of ANPP across the gradient of water availability is strong and must be taken into account for management, and (2) the highly variable ANPP may be monitored by remote sensing. EEA Chubut Fil: Buono, Gustavo Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentina Fil: Oesterheld, Martin. 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 Fil: Nakamatsu, Viviana Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Esquel; Argentina Fil: Paruelo, José María. 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 2019-01-16T17:44:34Z 2019-01-16T17:44:34Z 2010-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0140196310001680 http://hdl.handle.net/20.500.12123/4279 0140-1963 1095-922X https://doi.org/10.1016/j.jaridenv.2010.05.026 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Journal of Arid Environments 74 (10) : 1257-1261 (October 2010) |
| spellingShingle | Praderas Prados de Siega Paisaje Teledetección Variación Estacional Producción Primaria Grasslands Meadows Landscape Remote Sensing Seasonal Variation Primary Production Mallines Región Patagónica Buono, Gustavo Gabriel Oesterheld, Martin Nakamatsu, Viviana Beatriz Paruelo, José María Spatial and temporal variation of primary production of Patagonian wet meadows |
| title | Spatial and temporal variation of primary production of Patagonian wet meadows |
| title_full | Spatial and temporal variation of primary production of Patagonian wet meadows |
| title_fullStr | Spatial and temporal variation of primary production of Patagonian wet meadows |
| title_full_unstemmed | Spatial and temporal variation of primary production of Patagonian wet meadows |
| title_short | Spatial and temporal variation of primary production of Patagonian wet meadows |
| title_sort | spatial and temporal variation of primary production of patagonian wet meadows |
| topic | Praderas Prados de Siega Paisaje Teledetección Variación Estacional Producción Primaria Grasslands Meadows Landscape Remote Sensing Seasonal Variation Primary Production Mallines Región Patagónica |
| url | https://www.sciencedirect.com/science/article/pii/S0140196310001680 http://hdl.handle.net/20.500.12123/4279 https://doi.org/10.1016/j.jaridenv.2010.05.026 |
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