Litterfall and nutrients return in Nothofagus antarctica forests growing in a site quality gradient with different management uses in Southern Patagonia

BAHAMONDE H.A.; PERI P.L.; MARTÍNEZ PASTUR G.; MONELOS L.

EUROPEAN JOURNAL OF FOREST RESEARCH

SPRINGER

Lugar: Berlin; Año: 2015 vol. 134 p. 113 - 124

1612-4669

We evaluated the annual litterfall and nutrients return in primary forests of Nothofagus antarctica growing at three different site classes (SC) (III, IV and V), and compared two of these forests with adjacent stands under silvopastoral use (thinned 40 years ago), in Patagonia, Argentina. Traps were installed in each stand and sampled monthly during the litter fall over 10 years. Sample from the five stands were ground for further analyses of nutrients (N, P, K, Ca, Mg and S). The litterfall varied significantly between SC, but not between years, from 1306 to 1972 kg ha-1 in the best site. The nutrients return from litterfall did not change neither between site classes and years in most nutrients. Comparing primary forests with silvopastoral stands, in SCIV significant differences among uses occurred for litterfall production and nutrients return, being higher in primary forest. While, in SCV the litterfall and nutrients return practically did not change among uses. The results showed the incidence of site quality and forest use on the litterfall and nutrients return in N. antarctica forests.