INVESTIGADORES
LENCINAS Maria Vanessa
capítulos de libros
Título:
Improvement in conservation value of insect communities in South Patagonian forests managed with variable retention
Autor/es:
LENCINAS, MV; MARTÍNEZ PASTUR, G; CELLINI, JM; BUSSO, CA
Libro:
Frontiers in Biodiversity Studies
Editorial:
Bioscience Publications - Agrobios Editorial
Referencias:
Lugar: New Delhi; Año: 2012; p. 118 - 130
Resumen:
Insect conservation usually is rejected in ecosystem
management planning of South Patagonian forests. Traditional silviculture
methods proposed for these forests significantly affect its original diversity.
Variable retention (aggregated and dispersed retention) appears as alternative
to mitigate insect species losses of the original forest communities. The aim
was to evaluate insect communities in Nothofagus pumilio forests managed with
variable retention using aggregated and dispersed retentions, as well as clear
cuts, comparatively with unmanaged primary forests, one and four years after
harvesting. Adult insects were sampled through a wide spectrum trap set
(pit-fall, alcohol, lights and color trays). Richness and relative abundance
were evaluated by ANOVAs and classification analysis. Both variables trend to
decrease in harvested forests respect to the unmanaged ones, depending to the
habitat damage level, and were significantly higher in the fourth year after
harvesting than in the first. Variable retention improved N. pumilio forest
insect community conservation, but more studies are necessary to evaluate
conservation at landscape level and the effect of introduced species invasion
from associated environments.