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Abstract
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 [ver mas...]
dc.contributor.authorBahamonde, Héctor Alejandro
dc.contributor.authorPeri, Pablo Luis
dc.contributor.authorAlvarez, Roberto
dc.contributor.authorBarneix, Atilio Jose
dc.contributor.authorMoretto, Alicia Susana
dc.contributor.authorMartínez Pastur, Guillermo José
dc.date.accessioned2018-05-09T12:48:10Z
dc.date.available2018-05-09T12:48:10Z
dc.date.issued2013-04
dc.identifier.issn0167-4366
dc.identifier.issn1572-9680
dc.identifier.otherhttps://doi.org/10.1007/s10457-012-9541-5
dc.identifier.urihttps://link.springer.com/article/10.1007/s10457-012-9541-5
dc.identifier.urihttp://hdl.handle.net/20.500.12123/2357
dc.description.abstractIn 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.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceAgroforestry Systems 87 (2) : 259–271 (April 2013)es_AR
dc.subjectNothofaguses_AR
dc.subjectSistemas Silvopascícolases_AR
dc.subjectSilvopastoral Systemseng
dc.subjectBosqueses_AR
dc.subjectForestseng
dc.subjectSueloes_AR
dc.subjectSoileng
dc.subjectNitrógenoes_AR
dc.subjectNitrogeneng
dc.subjectMineralizaciónes_AR
dc.subjectMineralizationeng
dc.subject.otherNothofagus antarcticaes_AR
dc.subject.otherRegión Patagónicaes_AR
dc.subject.otherSistemas Silvopastorileses_AR
dc.subject.otherÑire
dc.titleSilvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralizationes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Santa Cruzes_AR
dc.description.filFil: Bahamonde, Héctor Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentinaes_AR
dc.description.filFil: 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; Argentinaes_AR
dc.description.filFil: Alvarez, Roberto. Universidad de Buenos Aires. Facultad de Agronomia; Argentinaes_AR
dc.description.filFil: Barneix, Atilio Jose. Universidad de Buenos Aires. Facultad de Agronomia; Argentinaes_AR
dc.description.filFil: Moretto, Alicia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro Austral de Investigaciones Cientificas; Argentinaes_AR
dc.description.filFil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro Austral de Investigaciones Cientificas; Argentinaes_AR
dc.subtypecientifico


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