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Field measurements, satellite observations, and models document a thinning trend in seasonal Arcticlake ice growth, causing a shift from bedfast to floating ice conditions. September sea iceconcentrations in the Arctic Ocean since 1991 correlate well (r=+0.69, p<0.001) to this lakeregime shift. To understand how and to what extent sea ice affects lakes, we conducted modelexperiments to simulate winters with years of high (1991/92) and low (2007/08) sea ice extent forwhich we also had field measurements and satellite imagery characterizing lake ice conditions. Alakeice growth model forced with Weather Research and Forecasting model output produced a 7%decrease in lake ice growth when 2007/08 sea ice was imposed on...
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In Arctic ecosystems, freshwater fish migrateseasonally between productive shallow water habitatsthat freeze in winter and deep overwinter refuge in riversand lakes. How these movements relate to seasonal hydrologyis not well understood.We used passive integratedtransponder tags and stream wide antennae to track1035 Arctic grayling in Crea Creek, a seasonally flowingbeaded stream on the Arctic Coastal Plain, Alaska. Migrationof juvenile and adult fish into Crea Creek peakedin June immediately after ice break-up in the stream. Fishthat entered the stream during periods of high flow andcold stream temperature traveled farther upstream thanthose entering during periods of lower flow and warmertemperature. We used generalized...
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Numerous studies utilizing remote sensing imagery and other methods have documented that thermokarst lakes are undergoing varied hydrological transitions in response to recent climate changes, from surface area expansion to drainage and evaporative desiccation. Here, we provide a synthesis of hydrological conditions for 376 lakes of mainly thermokarst origin across high-latitude North America. We assemble surface water isotope compositions measured during the past decade at five lake-rich landscapes including Arctic Coastal Plain (Alaska), Yukon Flats (Alaska), Old Crow Flats (Yukon), northwestern Hudson Bay Lowlands (Manitoba), and Nunavik (Quebec). These landscapes represent the broad range of thermokarst environments...
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Caribou (Rangifer tarandus) are an integral part of the ecological and cultural fabric of northwest Alaska. Western Arctic Herd (WAH) caribou roam over this entire region, including all 5 Arctic Network Inventory and Monitoring Program (ARCN) National Park Units. Conservation of healthy caribou populations are specifically mentioned within the enabling legislation (Alaska National Interested Lands Conservation Act or ANILCA) of three of these Parks and is of critical concern to subsistence hunters within this region. Caribou are, by far, the most abundant large mammal in northwest Alaska and are famous for their long-distance migrations and large population oscillations. For these reasons, ARCN chose WAH caribou...
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This document summarized the effort to derive new map data using reclassification logic or rule-based aggregation processes for WRST. The final map data set retains this highly detailed “bird’s-eye view” level of information in the form of a land cover database. Generalized land cover maps may then be derived from this detailed land cover database. In addition, alternative more directed detailed maps may be derived from the land cover database as needed.
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Erosion surface developed on Carmel formation. Flatlands (upper middle) are in process of dissection by Virgin River (bottom center) and its tributaries. The view includes 14 canyons, each as much as 800 feet deep. Washington County, Utah. n.d. (Photo by National Park Service) (Aerial photo) Published as figure 95 in U.S. Geological Survey Professional Paper 220. 1950.
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Album caption and index card: Cleft Arch from north, Lavender Canyon. Canyonlands National Park. San Juan County, Utah. 1957. (Photo by National Park Service)
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Carving of Wasatch formation in the Pink Cliffs. View looking across head of Campbell Canyon toward Boat Mesa (upper left). Bryce Canyon National Park. Garfield County, Utah, n.d. (Photo by National Park Service) Published as figure 60 in U.S. Geological Survey Professional Paper 226. 1951.
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Existing stream temperature data were compiled from numerous federal, state, tribal, and private sources to develop an integrated regional database. Spatial statistical models for river networks were applied to these data to develop an accurate model that predicts stream temperature for all fish-bearing streams in the US portion of the GNLCC. Differences between model outputs for historic and future climate scenarios were used to assess spatial variation in the vulnerability of sensitive fish species across the GNLCC.FY2011Objectives: Develop a regional stream temperature model that incorporates important climate drivers, wildfire/riparian conditions, and geomorphic factors; Use the model to understand and predict...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Aquatic Connectivity, British Columbia, Bull Trout, CA-1, All tags...
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This report describes the work performed by the Alaska Exotic Plant Management Team at Denali National Park & Preserve during the 2011 field season. The 2011 Exotic Plant Management Team at Denali National Park & Preserve comprised of two Student Conservation Association interns including one International SCA from Japan and one National Park Service employee. For the eighth consecutive year invasive plant inventory and control efforts were performed within the park. Efforts were focused on disturbed areas with high traffic use which consist of park entrance trails, park infrastructures, and areas along the Park Road corridor. Infestations of invasive plants were mapped using a Trimble 2005 GeoXT, and controlled...
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Lake polygons within the Fish Creek Watershed, Alaska were created and classified for a number of variables relevant to size, depth, hydrology, connectivity etc. Products derived from a 5m resolution IfSAR digital surface model by calculating a zero slope. Each feature was expanded by one pixel around the entire perimeter since all waterbodies were truncated by this during the slope calculation. Lakes >=1ha were manually extracted from the dataset and their perimeters further corrected using 2002 CIR orthophotography.
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: AQUATIC ECOSYSTEMS, AQUATIC ECOSYSTEMS, Academics & scientific researchers, Arctic Landscape Conservation Cooperative data.gov, BIOSPHERE, All tags...
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We propose a regional assessment of aquatic species vulnerabilities and responses to climate change as the basis for adaptive management for aquatic ecosystems in the Great Northern LCC, using the Transboundary Flathead Ecosystem as a case example. This region encompasses a complex mix of federal, state, tribal, and private lands in the US and federal, provincial and private lands in Canada. The complex suite of ownerships, international relations, and agency objectives establish their own set of challenges; however, all will experience a similar range of climatic (e.g., long-term drought and declining snow pack) and non-climatic (e.g., habitat fragmentation, shifting land- and water use patterns, and invasive species)...
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The intent of this project was to create a directory of academic climate change scientists that focus on the North Pacific Coast of North America—including California, Oregon, Washington, Idaho, British Columbia, and Alaska. The University of Washington developed the California, Oregon, Washington, and Idaho portion of the directory and Alaska Coastal Rainforest Center developed the British Columbia and Alaska portion of the directory. Funding was provided by the North Pacific Landscape Conservation Cooperative (NPLCC) and the Northwest Climate Science Center (NWCSC). The intended audience for this directory ranges from individual parties involved in climate change adaptation, to Landscape Conservation Cooperative...
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Stream flow in the Colorado River and Dolores River corridors has been significantly modified by water management, and continued flow alteration is anticipated in future decades with projected increases in human water demand. Bottomland vegetation has been altered as well, with invasion of non-native species, increases in wildfire and human disturbance, and currently, rapid shifts in riparian communities due to biological and mechanical tamarisk control efforts. In light of these conditions, land managers are in need of scientific information to support management of vegetation communities for values such as healthy populations of sensitive fish and wildlife species and human recreation. We propose to address these...
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Overview This project is using a combination of long-term data records and recently established large-scale adaptive management studies in managed forests across the Lake States, New England, Intermountain West, and Black Hills to identify forest management strategies and forest conditions that confer the greatest levels of resistance and resilience to past and emerging stressors and their relevance in addressing future global change. This work represents a broad partnership between scientists from the USFS Northern Research Station, USFS Rocky Mountain Research Station, USGS, University of MN, University of Maine, and Dartmouth College in an effort to capitalize on over 50 years of data collection on USFS...
map background search result map search result map Erosion surface developed on Carmel formation. Washington County, Utah. No date. Carving of Wasatch formation in the Pink Cliffs. Bryce Canyon National Park. Garfield County, Utah. No date. Cleft Arch from north, Lavender Canyon. Canyonlands National Park, Utah. 1957. The NorWeST Regional Stream Temperature Model for Mapping Thermal Habitats and Predicting Vulnerability of Aquatic Species to Climate Change Across the Great Northern LCC Predicting Effects of Climate Change on Aquatic Ecosystems in the Crown of the Continent Ecosystem : Combining Vulnerability Assessments, Landscape Connectivity , and Modeling for Conservation and Adaptation Science-Based Riparian Restoration Planning on the Colorado and Dolores Rivers: A Decision Support Tool and Investigation of Habitat Complexity at Tributary Junctions Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2012-August 2013 Invasive and exotic species management in Denali National Park & Preserve: 2011Summary report Long-term fire effects in the Yukon Valley, Progress Report 1999-2000 Wrangell-St. Elias National Park and Preserve landcover mapping project Snowpack monitoring, 2008-2009 annual summary: Central Alaska Network Moose monitoring protocol for the Central Alaska Network Climate station analysis of existing weather stations in and around Central Alaska Network: Update through 2010 Monitoring hazardous fuel reduction in Wrangell-St. Elias National Park and Preserve: Lessons learned from the Chokosna Fuels Reduction Project Climate Science Conference, Climate Science Directory Arctic sea ice decline contributes to thinning lake ice trend in northern Alaska A synthesis of thermokarst lake water balance in high-latitude regions of North America from isotope tracers Seasonal cues of Arctic grayling movement in a small Arctic stream: the importance of surface water connectivity Fish Creek Watershed Lake Classification Effects of Climate, Disturbance, and Management on the Growth and Dynamics of Temperate and Sub-Boreal Forest Ecosystems within the Lake States and New England The NorWeST Regional Stream Temperature Model for Mapping Thermal Habitats and Predicting Vulnerability of Aquatic Species to Climate Change Across the Great Northern LCC Climate Science Conference, Climate Science Directory Cleft Arch from north, Lavender Canyon. Canyonlands National Park, Utah. 1957. Monitoring hazardous fuel reduction in Wrangell-St. Elias National Park and Preserve: Lessons learned from the Chokosna Fuels Reduction Project Arctic sea ice decline contributes to thinning lake ice trend in northern Alaska A synthesis of thermokarst lake water balance in high-latitude regions of North America from isotope tracers Seasonal cues of Arctic grayling movement in a small Arctic stream: the importance of surface water connectivity Science-Based Riparian Restoration Planning on the Colorado and Dolores Rivers: A Decision Support Tool and Investigation of Habitat Complexity at Tributary Junctions Fish Creek Watershed Lake Classification Long-term fire effects in the Yukon Valley, Progress Report 1999-2000 Invasive and exotic species management in Denali National Park & Preserve: 2011Summary report Climate station analysis of existing weather stations in and around Central Alaska Network: Update through 2010 Predicting Effects of Climate Change on Aquatic Ecosystems in the Crown of the Continent Ecosystem : Combining Vulnerability Assessments, Landscape Connectivity , and Modeling for Conservation and Adaptation Wrangell-St. Elias National Park and Preserve landcover mapping project Erosion surface developed on Carmel formation. Washington County, Utah. No date. Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2012-August 2013 Moose monitoring protocol for the Central Alaska Network Snowpack monitoring, 2008-2009 annual summary: Central Alaska Network Effects of Climate, Disturbance, and Management on the Growth and Dynamics of Temperate and Sub-Boreal Forest Ecosystems within the Lake States and New England