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Ecosystem classification and inventory maps as surrogates for ground beetle assemblages in boreal forest

Journal of Plant Ecology 2012年第1期5卷 97-108页

作者： J.A.Colin Bergeron F.Guillaume Blanchet John R.Spence W.Jan A.Volney Department of Renewable Resources University of Alberta751 General Services BuildingEdmontonAlbertaCanada T6G 2H1 Natural Resources Canada Northern Forestry Centre5320122 Street NorthwestEdmontonAlbertaCanada T6H 3S5

Aims We compare performance of ecosystem classification maps and provincial forest inventory data derived from air photography in reflecting ground beetle(Coleoptera:Carabidae)biodiversity patterns that are related to the forest canopy *** biodiversity surrogacy model based on remotely sensed tree canopy cover is validated against field-collected ground *** We used a systematic sampling grid of 198 sites,covering 84 km^(2) of boreal mixedwood forest in northwestern Alberta,*** every site,we determined tree basal area,characterized the ground beetle assemblage and obtained corresponding provincial forest inventory and ecosystem classification *** used variation partitioning,ordination and misclassification matrices to compare beetle biodiversity patterns explained by alternative databases and to determine model biases originating from air *** Findings Ecosystem classification data performed better than canopy cover derived from forest inventory maps in describing ground beetle biodiversity *** biodiversity surrogacy models based on provincial forest inventory maps and field survey generally detected similar patterns but inaccuracies in air photo-interpretation of relative canopy cover led to differences between the two *** to field survey data,air photo-interpretation tended to confuse two Picea species and two Populus species present and homogenize stand *** generated divergence in models of ecological association used to predict the relationship between ground beetle assemblages and tree canopy *** of relative canopy cover from provincial inventory with other georeferenced land variables to produce the ecosystem classification maps improved biodiversity predictive *** association observed between uncommon surrogates and uncommon ground beetle species emphasizes the benefits of detecting these surrogates as a part of landscape *** order to comple

关键词： biodiversity surrogate regional conservation forest inventory ecosystem classification Carabidae

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