INVESTIGADORES
MARTINEZ PASTUR Guillermo Jose
congresos y reuniones científicas
Título:
Silvicultural implications of synergies between forest management of lenga (Nothofagus pumilio) and natural populations of guanaco (Lama guanicoe) in Tierra del Fuego.
Autor/es:
G MARTÍNEZ PASTUR; R SOLER ESTEBAN; MV LENCINAS; JM CELLINI; MD BARRERA; HA BAHAMONDE; PL PERI
Lugar:
Temuco
Reunión:
Congreso; Congreso Latinoamericano de IUFRO Landscape Ecology y Segundo Congreso Latinoamericano de IALE.; 2016
Institución organizadora:
IUFRO IALE UFRO
Resumen:
In Argentina and Chile, management and conservation proposals usually are based on theoretical models developed in the Northern Hemisphere. Sometimes, these practices were proposed without taking into account the particularities of our forest ecosystems. Further, most of these proposals are seldom confronted with field data, and may therefore generate extraordinary silvicultural costs for, local producers and Government. One of the emblematic cases in Tierra del Fuego is the use of lenga forests (Nothofagus pumilio) by the natural populations of guanaco (Lama guanicoe), both, in unmanaged and managed stands. Some papers described the damage produced in the forests by this species as irreversible (e.g. over seed banks, growth and quality of the regeneration in managed stands, or the influence over dynamics of forests in ecotone areas), and proposed actions for the management of the species (e.g. fences and hunting) without enough field evidence to support the described impacts. I present results of long-term permanent plots, that give another context to the guanaco impact on lenga forests, among them: (i) dietary pattern along the year, (ii) browsing influence on regeneration growth in managed stands, (iii) impact over the quality of the established plants, (iv) benefits of fences and hunting over the regeneration, and (v) synergies among browsing, climate and damages due to abiotic factors (e.g. frost or dryness). Our results indicate that damages due to browsing of guanaco are comparable tan those produced by the climate, and that the benefits of the guanaco management practices are not recommendable due to the low obtained benefits.