INVESTIGADORES
LENCINAS Maria Vanessa
capítulos de libros
Título:
Mitigation of biodiversity loss in Nothofagus pumilio managed forests of South Patagonia
Autor/es:
LENCINAS, MV; MARTÍNEZ PASTUR, G; GALLO, E; MORETTO A; BUSSO C; PERI P
Libro:
Understanding biodiversity loss: an overview of forest fragmentation in South America. Part III: Landscape ecology for conservation, management and restoration
Editorial:
International Association of Landscape Ecology
Referencias:
Lugar: Grenoble; Año: 2007; p. 112 - 120
Resumen:
Forest management is mainly based on economical and forest
structure variables, but ecology must be considered to develop new
silvicultural systems. The aim was to analyze the impact of traditional methods
compared to aggregated and dispersed retention proposals, over species richness
in Nothofagus pumilio forests. Understory plants, birds and insects were
sampled after three years of harvesting. Total richness inside the aggregates
was more similar to primary forests than harvested sectors (dispersed retention
or clearcuts). The major impact was the richness increment due to species
incorporation from associated environments. Harvesting allowed the introduction
of exotic plant species and birds from open places. The combined retention
treatment conserved most of the original insect richness inside the aggregates
(74%). The regeneration methods with aggregated and dispersed retention appear
as an effective alternative for biodiversity conservation, because aggregates
conserve some of the original heterogeneity and the environmental conditions of
the primary forests.