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Pacific lamprey Entosphenus tridentatus are declining in the Columbia River Basin and larval lamprey use of large, mainstem river habitats is unknown. Their use of shallow depositional areas associated with tributary inputs is equally unknown. We used a deepwater electrofisher to explore occupancy, detection, and habitat use of larval Pacific lamprey and Lampetra spp. in the lower reaches and mouths of the Klickitat, White Salmon, and Wind rivers, tributaries to Bonneville Reservoir and the Columbia River. We repeated similar work conducted in 2011. Specifically, sampling in 2011 in the White Salmon River and mouth took place prior to the breach of Condit Dam and subsequent release of sediments from Northwestern...
Categories: Publication; Types: Citation
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Description: The upper Gila River in New Mexico is one of the few unobstructed rivers in the Colorado River Basin with largely intact native fish populations, including four federally listed and one state listed species.Freshwater systems throughout the West continue to be threatened by human encroachment and water development. Methodologies or decision support tools to evaluate resource management practices that foster an understanding of how fish species adapt to the effects of climate change are critical to future resource management planning.
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PURPOSE: The exchange of lands between the U.S. Fish and Wildlife Service (FWS) and Doyon, Limited is proposed to enhance the Yukon Flats National Wildlife Refuge of Alaska. Doyon is the largest private landowner in the refuge and an Alaska Native regional corporation that has been interested in acquiring federal oil and gas interests since the refuge was established in 1980. Under the terms of an agreement in principle between the FWS and Doyon, the U.S. government would receive fee title to lease 150,000 acres of Doyon lands, including both surface and subsurface rights, with priority fish and wildlife habitats that can be incorporated into the refuge. Doyon would receive fee title to 110,000 acres of refuge lands,...
We evaluated the biogeomorphic processes of a large (309 ha) tidal salt marsh and examined factors that influence its ability to keep pace with relative sea-level rise (SLR). Detailed elevation data from 1995 and 2008 were compared with digital elevation models (DEMs) to assess marsh surface elevation change during this time. Overall, 37 % (113 ha) of the marsh increased in elevation at a rate that exceeded SLR, whereas 63 % (196 ha) of the area did not keep pace with SLR. Of the total area, 55 % (169 ha) subsided during the study period, but subsidence varied spatially across the marsh surface. To determine which biogeomorphic and spatial factors contributed to measured elevation change, we collected soil cores...
Understanding recent biogeographic responses to climate change is fundamental for improving our predictions of likely future responses and guiding conservation planning at both local and global scales. Studies of observed biogeographic responses to 20th century climate change have principally examined effects related to ubiquitous increases in temperature – collectively termed a warming fingerprint. Although the importance of changes in other aspects of climate – particularly precipitation and water availability – is widely acknowledged from a theoretical standpoint and supported by paleontological evidence, we lack a practical understanding of how these changes interact with temperature to drive biogeographic responses....
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Habitat loss and fragmentation are widely recognized as among the most important threats to global biodiversity. New analytical approaches are providing improved ability to predict the effects of landscape change on population connectivity at vast spatial extents. This paper presents an analysis of population connectivity for three species of conservation concern [swift fox (Vulpes velox); lesser prairie-chicken (Tympanuchus pallidicinctus); massasuaga (Sistrurus catenatus)] across the American Great Plains region. We used factorial least-cost path and resistant kernel analyses to predict effects of landscape conditions on corridor network connectivity. Our predictions of population connectivity provide testable...
Categories: Data, Project, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2010, CO-01, CO-02, CO-03, CO-04, All tags...
The tundra biome is the dominant terrestrial ecosystem of the circumpolar north, and its fate in a rapidly changing climate is of high scientific and socioeconomic concern. One of those concerns is that the majority of caribou herds throughout the circumpolar north are declining, perhaps as a result of climate change. The principal objective of this research is to reveal the connections between soil nutrient cycling, forage quality and caribou habitat selection. This framework is underpinned by the concept that tundra ecosystem productivity is ultimately driven by the thermodynamics of the system induced by climate.
Categories: Data, Publication; Types: Citation; Tags: ALPINE/TUNDRA, ALPINE/TUNDRA, CARBON, CARBON, CARBON CYCLE/CARBON BUDGET MODELS, All tags...
Coastal areas are high-risk zones subject to the impacts of global climate change, with significant increases in the frequencies of extreme weather and storm events, and sea-level rise forecast by 2100. These physical processes are expected to alter estuaries, resulting in loss of intertidal wetlands and their component wildlife species. In particular, impacts to salt marshes and their wildlife will vary both temporally and spatially and may be irreversible and severe. Synergistic effects caused by combining stressors with anthropogenic land-use patterns could create areas of significant biodiversity loss and extinction, especially in urbanized estuaries that are already heavily degraded. In this paper, we discuss...
We conducted detailed resurveys of a montane mammal, Urocitellus beldingi, to examine the effects of climate change on persistence along the trailing edge of its range. Of 74 California sites where U. beldingi were historically recorded (1902–1966), 42 per cent were extirpated, with no evidence for colonization of previously unoccupied sites. Increases in both precipitation and temperature predicted site extirpations, potentially owing to snowcover loss. Surprisingly, human land-use change buffered climate change impacts, leading to increased persistence and abundance. Excluding human-modified sites, U. beldingi has shown an upslope range retraction of 255 m. Generalized additive models of past distribution were...
PURPOSE: The implementation of a revised comprehensive conservation plan for the Kodiak National Wildlife of Alaska is proposed. The plan would replace the management plan adopted in 1987 and guide management of the refuge for the next 15 years. One of the 16 national refuges in Alaska, Kodiak Refuge encompasses 1.6 million acres of lands and waters on the Kodiak Archipelago. More specifically, the refuge includes the southwestern two-thirds of Kodiak Island all of Uganik Island, and 54,000 acres on Afognak and Ban islands. The refuge i9s rich in cultural and biological resources. Three levels of management direction are addressed with respect to conservation direction, specifically, regional management for all...
Kanuti National Wildlife Refuge was established to conserve white-fronted geese, other waterfowl and migratory birds, moose, caribou, and furbearers; to fulfill treaty obligations; to provide for continued subsistence uses; and to ensure necessary water quality and quantity. Because the refuge is seldom visited by anyone other than subsistence users from the immediate area, those who do venture into Kanuti's backcountry will find unspoiled and virtually unused wildlands to rival those anywhere else in the world. These lands support a wide variety of wildlife. In addition to the large mammals mentioned above, wolverine, fox, porcupine, lynx, beavers, muskrats, marten and mink can be seen, as well as nearly 130 species...
As electricity demand increases, policymakers must make decisions about which energy resources will meet future demands. Much of the recent literature has focused on the contribution of new coal power plants to carbon emissions (Milford et al., 2005; Milford et al., 2007; MIT 2007). However, policymakers and industry are increasingly interested in job creation and economic development analyses to understand the full impacts of new electricity generation projects.1 Additionally, economic development impacts are often a critical piece in building public support for wind power projects. The purpose of this research is to look at the specific factors that drive wind-power-related economic development and to better understand...
Categories: Publication; Types: Citation; Tags: Politics, Supply, World economy
The U.S. Fish and Wildlife Service has been conducting a juvenile salmonid monitoring project in Clear Creek, Shasta County, California, using a rotary screw trap (RST) since December 1998. This ongoing monitoring project has three primary objectives: 1) to determine an annual juvenile passage index (JPI) for Chinook salmon (Oncorhynchus tshawytscha) and rainbow trout/steelhead (O. mykiss), for inter-year comparisons; 2) obtain juvenile salmonid life history information including size, condition, emergence, and emigration timing, and potential factors limiting survival at various life stages; and 3) collect tissue samples from adult and juvenile salmonids for genetic and otolith analyses. The current report presents...
Categories: Publication; Types: Citation
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The Yukon–Kuskokwim Delta of Alaska,USAis a globally important region for numerous avianspecies including millions of migrating and nesting waterbirds.However, data on the current spatial distributionof critical nesting areas and the importance of environmental variables in the selection of nest locations aregenerally lacking for waterbirds in this region.We modeled nest densities for 6 species of geese and eiders thatcommonly breed on the Yukon–Kuskokwim Delta, including cackling goose (Branta hutchinsii minima),emperor goose (Chen canagica), black brant (B. bernicla nigricans), greater white-fronted goose (Anser albifronsfrontalis), spectacled eider (Somateria fischeri), and common eider (S. mollissima).Thedata...
Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BIRDS, BIRDS, CLIMATE CHANGE IMPACT ASSESSMENT MODELS, CLIMATE CHANGE IMPACT ASSESSMENT MODELS, DELTAS, All tags...
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Sky Island Alliance (SIA) is a non-governmental organizational that works to protect and restore the rich natural heritage of native species and habitats in the Sky Island Region. We work with volunteers, scientists, land-owners, public officials, and government agencies to establish protected areas, restore healthy landscapes, and promote public appreciation of the region’s unique biological diversity. Because of our long-standing collaborative relationships with land managers and our large corps of skilled volunteers, we were in a unique position to spearhead this project.SIA initiated this springs inventory, assessment and management planning project to develop baseline information on springs in the Sky Island...
Categories: Data, Publication; Types: ArcGIS REST Map Service, Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2011, AZ-02, AZ-03, Arizona, Conservation NGOs, All tags...
This September, 2014 article in the Orange County Register highlights the project “Sea-level rise modeling across the California salt marsh gradient”.
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Throughout the Arctic most pregnant polar bears (Ursus maritimus) construct maternity dens in seasonal snowdrifts that form in wind-shadowed areas. We developed and verified a spatial snowdrift polar bearden habitat model (SnowDens-3D) that predicts snowdrift locations and depths along Alaska’s Beaufort Sea coast. SnowDens-3D integrated snow physics, weather data, and a high-resolution digital elevation model (DEM) to produce predictions of the timing, distribution, and growth of snowdrifts suitable for polar bear dens. SnowDens-3D assimilated 18 winters (1995 through 2012) of observed daily meteorological data and a 2.5 m grid-increment DEM covering 337.5 km2 of the Beaufort Sea coast, and described the snowdrift...
In the Pacific Northwest, coastal wetlands support a wealth of ecosystem services including habitat provision for wildlife and fisheries and flood protection. The tidal marshes, mudflats, and shallow bays of coastal estuaries link marine, freshwater, and terrestrial habitats, and provide economic and recreational benefits to local communities. Climate change effects such as sea-level rise are altering these habitats, but we know little about how these areas will change over the next 50–100 years. Our study examined the effects of sea-level rise on nine tidal marshes in Washington and Oregon between 2012 and 2015, with the goal of providing scientific data to support future coastal planning and conservation. We compiled...
map background search result map search result map Climate change and connectivity: Assessing landscape and species vulnerability Kenai National Wildlife Refuge contaminant assessment Moose population survey, western Yukon Flats: Game Management Unit 25D, Yukon Flats National Wildlife Refuge, March 8-11, 2004 Proposed Land Exchange Yukon Flats National Wildlife Refuge Final Environmental Impact Statement. Summary Report, Inventory and Assessment Protocols, Adaptation Plan, and Presentation for: Springs in the Sky Island Region: Inventory, Assessment, and Management Planning Project Science Brief for Resource Managers: Metacommunity Dynamics of Gila River Fishes Modeling snowdrift habitat for polar bear dens Predicting Waterbird Nest Distributions on the Yukon–Kuskokwim Delta of Alaska Predicting Waterbird Nest Distributions on the Yukon–Kuskokwim Delta of Alaska Kenai National Wildlife Refuge contaminant assessment Report, Inventory and Assessment Protocols, Adaptation Plan, and Presentation for: Springs in the Sky Island Region: Inventory, Assessment, and Management Planning Project Modeling snowdrift habitat for polar bear dens Science Brief for Resource Managers: Metacommunity Dynamics of Gila River Fishes Proposed Land Exchange Yukon Flats National Wildlife Refuge Final Environmental Impact Statement. Summary Moose population survey, western Yukon Flats: Game Management Unit 25D, Yukon Flats National Wildlife Refuge, March 8-11, 2004 Climate change and connectivity: Assessing landscape and species vulnerability