INVESTIGADORES
LENCINAS Maria Vanessa
congresos y reuniones científicas
Título:
Variable retention influence over Nothofagus pumilio regeneration dynamics
Autor/es:
MARTÍNEZ PASTUR, G; CELLINI, JM; LENCINAS, MV; BARRERA, M; PERI, P
Lugar:
Seul
Reunión:
Congreso; XXIII IUFRO World Congress; 2010
Institución organizadora:
IUFRO
Resumen:
The
current silvicultural prescriptions for natural native Nothofagus pumilio forests are based mainly on opening the canopy
to stimulate natural regeneration by modifying soil moisture and light
availability at the understory level. New silvicultural practices intend to
manage these forests more effectively, e.g. with aggregated and dispersed
retention. The objective was to evaluate the regeneration dynamics along
edge-related gradients of the aggregated retention and microenvironments in the
dispersed retention during the first 6 years after the harvesting. The tested
hypotheses were: (i) aggregated retention influence over rainfall and solar
radiation interceptions, modifying the availability of these resources used by
the forest regeneration, where the magnitude of the influence is related to the
distance from the edge and the considered aspect, and (ii) microenvironments
generated by understory plant cover type, debris, and closeness of remnant
trees in the dispersed retention influence over regeneration dynamics, where
closeness of remnant trees and the increase in the understory cover negatively
influence over regeneration, as well as the absence or the excess of debris in
the forest floor. All the studied factors influence over regeneration dynamics,
but regeneration was abundant in all the sites for stands recovery.