Litter decomposition and nutrients dynamics in Nothofagus antarctica forests under silvopastoral use in Southern Patagonia
The role of environmental variables on litter decomposition and its nutrient release in Nothofagus antarctica forest in Patagonia is poorly understood. Moreover, in these forests under silvopastoral use there are few antecedents. Litter decomposition and nutrient release of grasses and tree leaves w...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2012Bahamonde2.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 245 | 1 | 0 | |a Litter decomposition and nutrients dynamics in Nothofagus antarctica forests under silvopastoral use in Southern Patagonia |
| 520 | |a The role of environmental variables on litter decomposition and its nutrient release in Nothofagus antarctica forest in Patagonia is poorly understood. Moreover, in these forests under silvopastoral use there are few antecedents. Litter decomposition and nutrient release of grasses and tree leaves were evaluated under different crown cover and two site quality stands during 480 days. Organic matter decomposition varied with crown cover for both types of litter, achieving mean values of 23 and 34 percent for maximal and minimal crown cover, respectively. Total transmitted radiation was the main environmental factor explaining 61 and 49 percent of the variation of grass and tree leaves decay rates, respectively. N, P, and Ca were mineralized during first 60 days in decomposing tree leaves and then immobilized without differences between crown cover. The K was immobilized during the evaluated period. In decomposing grass leaves the results varied according to site quality and time. There was a tendency of nutrient mineralization at the first 120 days and then immobilization. The removal of trees for silvopastoral use of N. antarctica may increase litter decomposition by changing the microclimate, but nutrients release or immobilization was mainly affected for their concentration in decomposing material. | ||
| 653 | 0 | |a LITTER DECOMPOSITION | |
| 653 | 0 | |a MINERALIZATION-IMMOBILIZATION | |
| 653 | 0 | |a NOTHOFAGUS | |
| 653 | 0 | |a PATAGONIA | |
| 653 | 0 | |a SILVOPASTORAL SYSTEM | |
| 653 | 0 | |a CANOPY ARCHITECTURE | |
| 653 | 0 | |a DECIDUOUS FOREST | |
| 653 | 0 | |a DECOMPOSITION | |
| 653 | 0 | |a ENVIRONMENTAL FACTOR | |
| 653 | 0 | |a GRASS | |
| 653 | 0 | |a IMMOBILIZATION | |
| 653 | 0 | |a LITTER | |
| 653 | 0 | |a MICROCLIMATE | |
| 653 | 0 | |a MINERALIZATION | |
| 653 | 0 | |a NUTRIENT DYNAMICS | |
| 653 | 0 | |a ORGANIC MATTER | |
| 653 | 0 | |a PASTURE | |
| 653 | 0 | |a SILVICULTURE | |
| 653 | 0 | |a NOTHOFAGUS ANTARCTICA | |
| 653 | 0 | |a POACEAE | |
| 700 | 1 | |a Bahamonde, Héctor A. |9 49467 | |
| 700 | 1 | |9 19246 |a Peri, Pablo Luis | |
| 700 | 1 | |9 7830 |a Alvarez, Roberto | |
| 700 | 1 | |a Barneix, Atilio José |9 42806 | |
| 700 | 1 | |a Moretto, Alicia S. |9 40605 | |
| 700 | 1 | |a Martínez Pastur, Guillermo José |9 49479 | |
| 773 | |t Agroforestry Systems |g Vol.84, no.3 (2012), p.345-360 | ||
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| 900 | |a ^tLitter decomposition and nutrients dynamics in Nothofagus antarctica forests under silvopastoral use in Southern Patagonia | ||
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| 900 | |a ^aPeri^bP. L. | ||
| 900 | |a ^aAlvarez^bR. | ||
| 900 | |a ^aBarneix^bA. J. | ||
| 900 | |a ^aMoretto^bA. | ||
| 900 | |a ^aPastur^bG. M. | ||
| 900 | |a ^aBahamonde^bH.A.^tInstituto Nacional de TecnologÃa Agropecuaria [INTA], cc 332, CP 9400 RÃo Gallegos, Santa Cruz, Argentina | ||
| 900 | |a ^aPeri^bP.L.^tUniversidad Nacional de la Patagonia Austral [UNPA], Lisandro de la Torre 1070, CP 9400 RÃo Gallegos, Argentina | ||
| 900 | |a ^aAlvarez^bR.^tConsejo Nacional de Investigaciones CientÃficas y Técnicas [CONICET], Buenos Aires, Argentina | ||
| 900 | |a ^aBarneix^bA.^tFacultad de AgronomÃa, Universidad de Buenos Aires, Av San MartÃn 4453, C1417DSE Buenos Aires, Argentina | ||
| 900 | |a ^aMoretto^bA.^tCentro Austral de Investigaciones CientÃficas [CADIC], Houssay 200 [9410] Ushuaia, Tierra del Fuego, Argentina | ||
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| 900 | |a ^tAgroforestry Systems^cAgrofor. Syst. | ||
| 900 | |a en | ||
| 900 | |a 345 | ||
| 900 | |a ^i | ||
| 900 | |a Vol. 84, no. 3 | ||
| 900 | |a 360 | ||
| 900 | |a LITTER DECOMPOSITION | ||
| 900 | |a MINERALIZATION-IMMOBILIZATION | ||
| 900 | |a NOTHOFAGUS | ||
| 900 | |a PATAGONIA | ||
| 900 | |a SILVOPASTORAL SYSTEM | ||
| 900 | |a CANOPY ARCHITECTURE | ||
| 900 | |a DECIDUOUS FOREST | ||
| 900 | |a DECOMPOSITION | ||
| 900 | |a ENVIRONMENTAL FACTOR | ||
| 900 | |a GRASS | ||
| 900 | |a IMMOBILIZATION | ||
| 900 | |a LITTER | ||
| 900 | |a MICROCLIMATE | ||
| 900 | |a MINERALIZATION | ||
| 900 | |a NUTRIENT DYNAMICS | ||
| 900 | |a ORGANIC MATTER | ||
| 900 | |a PASTURE | ||
| 900 | |a SILVICULTURE | ||
| 900 | |a NOTHOFAGUS ANTARCTICA | ||
| 900 | |a POACEAE | ||
| 900 | |a The role of environmental variables on litter decomposition and its nutrient release in Nothofagus antarctica forest in Patagonia is poorly understood. Moreover, in these forests under silvopastoral use there are few antecedents. Litter decomposition and nutrient release of grasses and tree leaves were evaluated under different crown cover and two site quality stands during 480 days. Organic matter decomposition varied with crown cover for both types of litter, achieving mean values of 23 and 34 percent for maximal and minimal crown cover, respectively. Total transmitted radiation was the main environmental factor explaining 61 and 49 percent of the variation of grass and tree leaves decay rates, respectively. N, P, and Ca were mineralized during first 60 days in decomposing tree leaves and then immobilized without differences between crown cover. The K was immobilized during the evaluated period. In decomposing grass leaves the results varied according to site quality and time. There was a tendency of nutrient mineralization at the first 120 days and then immobilization. The removal of trees for silvopastoral use of N. antarctica may increase litter decomposition by changing the microclimate, but nutrients release or immobilization was mainly affected for their concentration in decomposing material. | ||
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