Variability in chilean Nothofagus species, ex pressed as more or less apparent differences bet ween populations, has its origin on the broad distribution and on the habitat diversity of them. Furthermore they easily hybridize when two different species grow together in ecotones, developing fertile hybrids able to introduce new variation factors derived from introgression phe nomena. Based on these factors variation found in Nothofagus obliqua, N. alpina and N. dombe

Proposición de zonas de crecimiento de renovales de roble (Nothofagus obliqua) y raulí (Nothofagus alpina) en su rango de distribución natural* Proposition of growth zones for roble (Nothofagus obliqua) and raulí (Nothofagus alpina) second growth forests along their natural distribution rank C.D.O.

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Valores de producción de semillas y hojarasca de diferentes especies del tipo forestal siempreverde de la Cordillera de la Costa de Valdivia obtenidos durante un período de 10 años A ten year study of seed and litter production of different tree species of the broadleaved evergreen forests of the Coastal Cordillera of Valdivia