info:ar-repo/semantics/artículo
Changes in forest structure modify understory and livestock occurrence along the natural cycle and different management strategies in Nothofagus antarctica forests
Fecha
2022-08-17Registro en:
Martínez Pastur G.; Cellini J.M.; Chaves J.E.; Rodriguez Souilla J.; Benítez J.; Rosas Y.M.; Soler R.; Lencinas M.V.; Peri P.L. (2022) Changes in forest structure modify understory and livestock occurrence along the natural cycle and different management strategies in Nothofagus antarctica forests. Agroforestry Systems 96: 1039-1052.
0167-4366
1572-9680
Autor
Martínez Pastur, Guillermo José
Cellini, Juan Manuel
Chaves, Jimena Elizabeth
Rodríguez‑Souilla, Julián
Benítez, Julieta
Rosas, Yamina Micaela
Soler Esteban, Rosina Matilde
Lencinas, María Vanessa
Peri, Pablo Luis
Resumen
Sustainable forest management is proposed as a solution for many ecological and socioeconomic trade-offs associated with different forest uses. In Patagonia, silvopastoral systems were proposed to balance provisioning ecosystem services and other natural values. However, the design of these practices needs a better understanding of livestock production. The objective of this study was to determine changes in the understory forage value and livestock occurrence in Nothofagus antarctica forests of
Tierra del Fuego (Argentina) growing under a natural dynamic and in stands with impacts generated by harvesting, fires and silvopastoral uses. We sampled 145 areas determining forest structure, understory forage value (cover, biomass, forage quality) and livestock occurrence (wild and domestic stocking rate), including different forest conditions: (i) six phases of the natural forest cycle (even- and uneven-aged stands), (ii) four types of management and conversion alternatives (different thinning intensities, clear-cuts, and fires), and (iii) three associated environments (forest edges and grasslands). Main results showed that understory cover and biomass did not differ along the natural forest phases, but varied across management alternatives and associated environments. The
magnitude of these changes was directly related to the impact degree. Forage quality did not change across the factors and levels. Livestock occurrence is related to the observed changes in the understory; however, a different behaviour was observed between wild and domestic herbivores. The different analyses highlighted the similarities in forage value and livestock occurrence among the different natural forest phases, and showed how the stands with different impacts differed from the control stands. The outputs could
be used to improve forest management strategies in the framework of silvopastoral systems at landscape level.
Materias
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Los sistemas silviculturales aplicables a los bosques nativos chilenos
Garrido González, Fernando -
Diseño de mapas de restricciones al uso de métodos de corta utilizando un sistema de información geográfico
Fischer Ganzoni, Emanuel Roberto -
Tipos forestales de los bosques nativos de Chile
Donoso Zegers, Claudio