Filters: Tags: Range changes (X)
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Using a bioclimatic envelope approach, University of Alberta investigators project how the distribution and abundance of boreal forest birds across North America will respond to different scenarios of future climate-change. Investigation emphasis is on mapping and quantifying potential range expansions of boreal bird species into Arctic and subarctic regions across Alaska and Canada. The final products demonstrate a broad continental-scale overview of potential shifts in avian distribution.
Climate models project the rapid warming of boreal and arctic regions of NorthAmerica. This has led to predictions that boreal forest vegetation and fauna will track these changes andshift northward into the arctic over the next century. We used a comprehensive dataset of avian pointcountsurveys from across boreal Canada and Alaska, combined with the best-available interpolatedclimate data, to develop bioclimatic niche models of current avian distribution and density for 102 nativespecies of forest songbirds. We then used a downscaling of projected climates in future periods (2011–2040, 2041–2070, 2071–2100) to assess the potential for these species to shift their ranges and increasetheir abundance across North...
Background: Yellow-cedar (Callitropsis nootkatensis) is an economically and culturally important tree of the North Pacific coastal rainforest, ranging from northern California through Southeast Alaska. The species has been in decline for many decades, particularly in the northern portion of its range (Southeast Alaska and coastal British Columbia), and is currently under consideration for listing as Threatened or Endangered. Previous work has delineated locations of yellow-cedar stands across the species range, and modeled geophysical features associated with presence of the tree.Purpose: The purpose of this project is to support refinement of a range-wide analysis of bioclimatic factors that support healthy vs....
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: AK-1,
Academics & scientific researchers,
Alaska,
BIOSPHERICINDICATORS,
British Columbia,
The Alaska Forage Fish Database (AFFD) is a consolidation of survey data from multiple agencies that were sampled via fishing gear and predator diets. The spatial coverage includes the Gulf of Alaska, Bering Sea, Aleutian Islands, Chukchi Sea, and Beaufort Sea. Fish species within the database include Pacific sand lance, Pacific capelin, Pacific herring, juvenile walleye pollock and Pacific cod, myctophid, squid, and euphausiid. The data package is comprised of six tables: (1) catch_table includes counts, weight, and individual morphological characteristics (length, sex, age) of the sampled species; (2) event_table includes sampling time, location, and methods; (3) gear_table includes specifics about of the gear...
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