%0 Journal Article
%T Aspectos ecol¨®gicos de la regeneraci¨®n por semillas en bosques nativos de Nothofagus antarctica en Patagonia Sur, Argentina
%A Bahamonde
%A H¨¦ctor A
%A Peri
%A Pablo L
%A Monelos
%A Lucas H
%A Mart¨ªnez Pastur
%A Guillermo
%J Bosque (Valdivia)
%D 2011
%I Scientific Electronic Library Online
%R 10.4067/S0717-92002011000100003
%X the aims of the present study were to quantify the annual seed production and its viability in pure stands of nothofagus antarctica (£¿ire) grown in three sites, and to evaluate the establishment and mortality of seedling after seeds fall in southern patagonia (argentina). seed production was sampled using 4 traps in each site during five consecutive years (2004-2008). from this, seed viability and germination were evaluated. in each site, permanent sampling plots were set up for seedling establishment and mortality measurements. seed production varied from 2 to 52 millions seeds ha-1 being higher in better site quality stands. the number of days with air temperature below 0 oc during the period before flowering explained 42 % of the seed production variation from the sites and years evaluated. germination varied between sites, being less than 12 % and independent from seed production. seedlings establishment only occurred in two years with a maximum value of 185,000 seedlings ha-1 but with high mortality at the end of the growing season. we concluded that regeneration from seeds in the years and sites evaluated was not successful. therefore, a longer period of evaluation is needed to assess the regeneration process in these forests.
%K seeding
%K seedling installation
%K £¿ire
%K between years variation.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0717-92002011000100003&lng=en&nrm=iso&tlng=en