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Daniel Isaak

Abstract The distribution and future fate of ectothermic organisms in a warming world will be dictated by thermalscapes across landscapes. That is particularly true for stream fishes and cold-water species like trout, salmon, and char that are already constrained to high elevations and latitudes. The extreme climates in those environments also preclude invasions by most non-native species, so identifying especially cold habitats capable of absorbing future climate change while still supporting native populations would highlight important refugia. By coupling crowd-sourced biological datasets with high-resolution stream temperature scenarios, we delineate network refugia across >250 000 stream km in the Northern...
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These data represent modeled stream temperatures for a portion of a larger dataset known as the Great Northern Landscape Conservation Cooperative (GNLCC) (https://www.fws.gov/science/catalog). This metadata record is a combined description for two spatial data feature types, vector lines and points, which cover the same geographic area. The line features are derived from NHDPlus (http://www.horizon-systems.com/NHDPlus/index.php) (USEPA and USGS, 2010) stream lines and the point data represent 1 km intervals along the NHDPlus stream network. Both datasets contain identical modeled stream temperature attributes. These modeled stream temperatures were generated as part of the U.S. Forest Service NorWeST stream temperature...
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These data represent stream temperature observation locations for a portion of a larger study area known as the Great Northern Landscape Conservation Cooperative (GNLCC) https://www.fws.gov/science/catalog. These data were collected and processed as part of the NorWeST stream temperature project http://www.fs.fed.us/rm/boise/AWAE/projects/NorWeST.htmlThese thermograph locations and the attendant temperature observations were used as the baseline data for the NorWeST stream temperature modeling project. As a result, modeled temperatures will be most reliable in areas with the greatest density of thermographs. These data reside in ESRI shapefile format, ArcGIS version 9.3. The point shapefile extents correspond to...
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These GIS data are intended to assist users in understanding general patterns in bull trout distributions and inferring potential alteration of these distributions with changes in future mean annual air temperatures. The data have been developed specifically for bull trout and are not intended for use with other aquatic organisms unless similar linkages with air temperatures can be established. The data are most appropriate for broad scale displays and inference (i.e., map scales ~ 1:1,000,000) and should not be applied at finer scales, where local conditions may cause significant deviations from model predictions. The lower limit bull trout model predicts accurately (R2 = 0.74) across the Columbia River basin,...
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Date and Time: May 28, 2013 (All day)Time: 11:00 am-12:00 pm Mountain Time / 10:00-11:00 am Pacific TimeHosts: Pacific Northwest Climate Change Collaboration (C3) and Great Northern LCCPresenter: Dan Isaak, Research Fisheries Scientist, Boise Aquatic Research Lab, Rocky Mountain Research Station, US Forest Service Description: Human population growth and anthropogenic climate change will have profound consequences for aquatic ecosystems this century. Effective resource stewardship will require unprecedented levels of interagency coordination and development of datasets and models capable of accurately portraying resource status in real-world coordinates. The revolution in digital and social media technologies,...
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