INVESTIGADORES
MARTINEZ PASTUR Guillermo Jose
congresos y reuniones científicas
Título:
Seeding and natural regeneration in unmanaged and silvopastoral managed Nothofagus antarctica forests in South Patagonia
Autor/es:
R SOLER ESTEBAN; G MARTÍNEZ PASTUR
Lugar:
KENYA
Reunión:
Congreso; II World Congress of Agroforestry; 2009
Resumen:
Abstract Cattle raising is one of the major economical activities in South Patagonia, and silvopastoral systems was proposed to manage Nothofagus antarctica (ñire) forests. Actually, silvopastoral were applied in old-growth forests, but in the near future the managed forests will include secondary forest structures too. Beside this, the proposed thinnings of the silvopastoral systems significantly affects seeding and natural regeneration cycles. To design of sustainable agro-forestal management in South Patagonia requires knowledge of key aspects of seed production. The aim was determine the changes of seeding and natural regeneration in unmanaged and silvopastoral managed Nothofagus antarctica forests. Ten traps per stand (n=8) were monthly collected to analyze seed quality and quantity in old-growth (OG), secondary forests (SF), recent silvopastoral plots (RSS) and long-term silvopastoral use plots (LTS) stands. Natural regeneration was studied in 5 plots (1 m2) per stand. Data were compared using simple ANOVAs and multivariate analysis. Seeding processes and natural regeneration were significantly affected by stand age and silvopastoral management. Seeds were decreased in number (F=33.10 p