Hamann, Andreas

22 items:

Tracking suitable habitat for tree populations under climate change in western North America Categories: Publication; Types: Citation; Tags: P2-Changes in Plant and Animal Species Due to Climate Change
Is an Unprecedented Dothistroma Needle Blight Epidemic Related to Climate Change? Categories: Publication; Types: Citation; Tags: P2-Changes in Plant and Animal Species Due to Climate Change
Projecting boreal bird responses to climate change: the signal exceeds the noise For climate-change projections to be useful, the magnitude of change must be understood relative to the magnitude of uncertainty in model predictions. We quantified the signal-to-noise ratio in projected distributional responses of boreal birds to climate change, and compared sources of uncertainty. Boosted regression tree models of abundance were generated for 80 boreal-breeding bird species using a comprehensive dataset of standardized avian point counts (349,629 surveys at 122,202 unique locations) and 4-km climate, land-use and topographic data. For projected changes in abundance, we calculated signal-to-noise ratios, and examined variance components related to choice of global climate model (GCM) and two sources... Categories: Publication; Types: Citation; Tags: M1-Birds
Bioclimate envelope model predictions for natural resource management: dealing with uncertainty Categories: Publication; Types: Citation
An ecogeographic framework for in situ conservation of forest trees in British Columbia We present a comprehensive approach to carry out community-wide assessments of in situ conservation of forest trees based on basic botanical and ecological data. This is a first step, resulting in a consistent framework to set priorities for collection and inclusion of species- specific biological and genetic information. We use botanical sample data to generate high-resolution distribution maps as a basis for a gap analysis of how well each species is represented in protected areas. To account for adaptive genetic variation of tree species we stratify populations by ecological zones that represent different macroclimates. In a detailed example for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), we show that... Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adaptation Planning 1-Best Management Practices, Baseline 1-High Resolution Landcover Imaging, Landscape Scale Conservation: Forestry

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