Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization
In most temperate forest, nitrogen (N) is considered a limiting factor. This becomes important in extreme environments, as Nothofagus antarctica forests, where the antecedents are scarce. Thinning practices in N. antarctica forests for silvopastoral uses may modify the soil N dynamics. Therefore, th...
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| Format: | Artículo |
| Language: | Inglés |
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2018
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| Online Access: | https://link.springer.com/article/10.1007/s10457-012-9541-5 http://hdl.handle.net/20.500.12123/2357 https://doi.org/10.1007/s10457-012-9541-5 |
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| author | Bahamonde, Héctor Alejandro Peri, Pablo Luis Alvarez, Roberto Barneix, Atilio Jose Moretto, Alicia Susana Martínez Pastur, Guillermo José |
| author_browse | Alvarez, Roberto Bahamonde, Héctor Alejandro Barneix, Atilio Jose Martínez Pastur, Guillermo José Moretto, Alicia Susana Peri, Pablo Luis |
| author_facet | Bahamonde, Héctor Alejandro Peri, Pablo Luis Alvarez, Roberto Barneix, Atilio Jose Moretto, Alicia Susana Martínez Pastur, Guillermo José |
| author_sort | Bahamonde, Héctor Alejandro |
| collection | INTA Digital |
| description | In most temperate forest, nitrogen (N) is considered a limiting factor. This becomes important in extreme environments, as Nothofagus antarctica forests, where the antecedents are scarce. Thinning practices in N. antarctica forests for silvopastoral uses may modify the soil N dynamics. Therefore, the objective of this work was to evaluate the temporal variation of soil N in these ecosystems. The mineral extractable soil N, net nitrification and net N mineralization were evaluated under different crown cover and two site quality stands. The mineral N extractable (NH4 +–N + NO3 −–N) was measured periodically. Net nitrification and net N mineralization were estimated through the technique of incubation of intact samples with tubes. The total mineral extractable N concentration varied between crown cover and dates, with no differences among site classes. The lowest and highest values were found in the minimal and intermediate crown cover, respectively. In the higher site quality stand, the annual net N mineralization was lower in the minimal crown cover reaching 11 kg N ha−1 year−1, and higher in the maximal crown cover (54 kg N ha−1 year−1). In the lower site quality stand there was no differences among crown cover. The same pattern was found for net nitrification. Thinning practices for silvopastoral use of these forests, keeping intermediate crown cover values, did not affect both N mineralization and nitrification. However, the results suggest that total trees removal from the ecosystem may decrease N mineralization and nitrification. |
| format | Artículo |
| id | INTA2357 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA23572018-05-14T11:23:47Z Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization Bahamonde, Héctor Alejandro Peri, Pablo Luis Alvarez, Roberto Barneix, Atilio Jose Moretto, Alicia Susana Martínez Pastur, Guillermo José Nothofagus Sistemas Silvopascícolas Bosques Suelo Nitrógeno Mineralización Silvopastoral Systems Forests Soil Nitrogen Mineralization Nothofagus antarctica Región Patagónica Sistemas Silvopastoriles Ñire In most temperate forest, nitrogen (N) is considered a limiting factor. This becomes important in extreme environments, as Nothofagus antarctica forests, where the antecedents are scarce. Thinning practices in N. antarctica forests for silvopastoral uses may modify the soil N dynamics. Therefore, the objective of this work was to evaluate the temporal variation of soil N in these ecosystems. The mineral extractable soil N, net nitrification and net N mineralization were evaluated under different crown cover and two site quality stands. The mineral N extractable (NH4 +–N + NO3 −–N) was measured periodically. Net nitrification and net N mineralization were estimated through the technique of incubation of intact samples with tubes. The total mineral extractable N concentration varied between crown cover and dates, with no differences among site classes. The lowest and highest values were found in the minimal and intermediate crown cover, respectively. In the higher site quality stand, the annual net N mineralization was lower in the minimal crown cover reaching 11 kg N ha−1 year−1, and higher in the maximal crown cover (54 kg N ha−1 year−1). In the lower site quality stand there was no differences among crown cover. The same pattern was found for net nitrification. Thinning practices for silvopastoral use of these forests, keeping intermediate crown cover values, did not affect both N mineralization and nitrification. However, the results suggest that total trees removal from the ecosystem may decrease N mineralization and nitrification. EEA Santa Cruz Fil: Bahamonde, Héctor Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Alvarez, Roberto. Universidad de Buenos Aires. Facultad de Agronomia; Argentina Fil: Barneix, Atilio Jose. Universidad de Buenos Aires. Facultad de Agronomia; Argentina Fil: Moretto, Alicia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro Austral de Investigaciones Cientificas; Argentina Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro Austral de Investigaciones Cientificas; Argentina 2018-05-09T12:48:10Z 2018-05-09T12:48:10Z 2013-04 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s10457-012-9541-5 http://hdl.handle.net/20.500.12123/2357 0167-4366 1572-9680 https://doi.org/10.1007/s10457-012-9541-5 eng info:eu-repo/semantics/restrictedAccess application/pdf Agroforestry Systems 87 (2) : 259–271 (April 2013) |
| spellingShingle | Nothofagus Sistemas Silvopascícolas Bosques Suelo Nitrógeno Mineralización Silvopastoral Systems Forests Soil Nitrogen Mineralization Nothofagus antarctica Región Patagónica Sistemas Silvopastoriles Ñire Bahamonde, Héctor Alejandro Peri, Pablo Luis Alvarez, Roberto Barneix, Atilio Jose Moretto, Alicia Susana Martínez Pastur, Guillermo José Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization |
| title | Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization |
| title_full | Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization |
| title_fullStr | Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization |
| title_full_unstemmed | Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization |
| title_short | Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization |
| title_sort | silvopastoral use of nothofagus antarctica in southern patagonian forests influence over net nitrogen soil mineralization |
| topic | Nothofagus Sistemas Silvopascícolas Bosques Suelo Nitrógeno Mineralización Silvopastoral Systems Forests Soil Nitrogen Mineralization Nothofagus antarctica Región Patagónica Sistemas Silvopastoriles Ñire |
| url | https://link.springer.com/article/10.1007/s10457-012-9541-5 http://hdl.handle.net/20.500.12123/2357 https://doi.org/10.1007/s10457-012-9541-5 |
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