INVESTIGADORES
MARTINEZ PASTUR Guillermo Jose
congresos y reuniones científicas
Título:
Monitoring variable retention harvesting in southern Patagonia Nothofagus forests using ground beetles as potential indicators.
Autor/es:
MV LENCINAS; F SOLA; JM CELLINI; G MARTÍNEZ PASTUR
Lugar:
Tartu
Reunión:
Conferencia; IUFRO Landscape Ecology Conference; 2015
Institución organizadora:
Tartu University
Resumen:
Variable retention has been proposed to mitigate harmful effects of harvesting in southern Patagonian Nothofagus pumilio forests. We propose the use of ground beetle diversity as impact indicators due to their abundance and diversity. The objective was to determine the impact of two different retention methods on N. pumilio forests using ground beetles as biodiversity indicators. We sampled three areas under management across Tierra del Fuego (Argentina), including old growth (OG) and harvested stands, with aggregated (AR) and dispersed (DR) retention. We located 4 sets of pitfall traps (each set consisting of 5 traps) in each area, which were collected after a week during middle summer. We sampled 1437 individuals from 45 morpho-species of 16 families. Significant differences were found in abundance between areas and treatments, whereas species richness only changed between areas. Abundance was highest in OG, followed by AR and DR. Harvesting reduces abundance of ground beetles (either AR or DR) but richness is more dependent on site location. Changes across landscapes make off-reserve conservation strategies necessary.