INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Wave regeneration after wind blowdowns in Nothofagus forests in southern Patagonia.
AMOROSO, MARIANO; RUIZ, MATIAS; VILLALBA, RICARDO
Conferencia; Second American Dendrochronology Conference AmeriDendro2013; 2013
Wave regeneration describes a process involving the death of trees along a narrow moving front perpendicular to the direction of the prevailing winds. For southern Patagonia, regenerating waves are known for the southern island of Tierra del Fuego but have not been reported for the continental forests yet. We reconstructed the history of wave mortality and regeneration patches in Nothofagus pumilio forests in Santa Cruz, Argentina. We used vegetation transects along theregeneration patches and adjacent undisturbed forests to reconstruct mortality and establishment patterns. With this information we determined the occurrence, intensity and synchrony of windstorms along patches. Intense sampling along the edge allowed us to describe mortality and growth patterns in the residual trees after the windstorms. Furthermore, we identified disturbance interaction with avalanches at the highest patches. This study represents the first report of waveregeneration for the continental and mountain forests in southern Patagonia.