Anthropogenic disturbance and diversity of species: polypores and polypore-associated beetles in forest, forest edge and clear-cut
Abstract:In boreal coniferous forests, artificial edges often modify the habitat, increasing the likelihood that the diversity and composition of species changes. This study examined the assemblage of polypores and polypore-associated beetles at the edge of mature managed spruce-dominated forests and clear-cuts. The highest number of polypore occurrences and the greatest diversity of polypore species occurred at the clear-cut. In south-facing edges polypores occurred closer to the edge both in clear-cut and in forest than in the north-facing edges. The number of polypore-associated beetle individuals was greatest in the clear-cut, but there was no effect of edge on species richness of beetles. Orientation of the edge had no effect on the distribution of beetles in clear-cut, but in the forest beetles were closer to the edge in south-facing edges than in north-facing edges. The higher density of individuals and greater diversity of species in clear-cut may result from the rapid, short-term increase in dead-wood resource.
Document Type: Research Article
Publication date: 2005-10-01