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Nine native taxa including Carex oligosperma, C. pauciflora, C. pellita, Chimaphila umbellata ssp. occidentalis, Draba densifolia, x Elyleymus hirtiflorus, Eriophorum vaginatum ssp. spissum, Impatiens ? capensis, and Rhus radicans are reported new to the known flora of the Yukon Territory. Eight introduced taxa are also reported as new to the known flora. Significant range extensions within the Territory are reported for 180 native and 17 introduced taxa. Comments are presented on three native taxa and two native taxa are deleted from the Territory.
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We reconstructed late Holocene fluctuations of Kluane Lake in Yukon Territory from variations in bulk physical properties and carbon and nitrogen elemental and isotopic abundances in nine sediment cores. Fluctuations of Kluane Lake in the past were controlled by changes in climate and glaciers, which affected inflow of Slims and Duke rivers, the two largest sources of water flowing into the lake. Kluane Lake fluctuated within a narrow range, at levels about 25 m below the present datum, from about 5000 to 1300 cal yr BP. Low lake levels during this interval are probably due to southerly drainage of Kluane Lake to the Pacific Ocean, opposite the present northerly drainage to Bering Sea. Slims River, which today is...
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The article discusses the analysis of geochemical samples from the Geological Survey and Bureau of Mines (USBM) by the Alaska Division of Geological & Geophysical Surveys (DGGS). Topics included are the evaluation of Strategic and Critical Minerals (SCM) content of central Alaska Ray River watershed specimen, the documentation of location coordinates and pulp preparation methodology, and the analysis of rare earth and ore elements by ALS Minerals Laboratories.
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White phosphorus (WP) has been implicated in the deaths of thousands of waterfowl annually at Eagle River Flats (ERF), an estuarine salt marsh located on Fort Richardson near Anchorage, Alaska. The source of WP contamination at ERF was the firing of WP containing munitions into the area by the U.S. military. WP is a well-known toxicant and is lethal to a wide range of species. However, WP contamination at ERF is the first documented case of a U.S. Army munitions impact area contaminated with WP particles. This has led to the designation of ERF as a Superfund site by the U.S. Environmental Protection Agency, and the Army must follow the guidelines of remediation set by the Comprehensive Environmental Response, Compensation,...
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In North America, the last ice age is the most recent event with severe consequences on boreal species’ ranges. Phylogeographic patterns of range expansion in trembling aspen (Populus tremuloides) suggested that Beringia is likely to be a refugium and the “ice-free corridor” in Alberta may represent a region where small populations persisted during the last glacial maximum (LGM). The purpose of this study was to ascertain whether the origins of trembling aspen in western North America are reflected in the patterns of neutral genetic diversity and population structure. A total of 28 sites were sampled covering the northwestern part of aspen’s distribution, from Saskatchewan to Alaska. Twelve microsatellite markers...
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Sexual segregation occurs frequently in sexually dimorphic species, and it may be influenced by differential habitat requirements between sexes or by social or evolutionary mechanisms that maintain separation of sexes regardless of habitat selection. Understanding the degree of sex-specific habitat specialization is important for management of wildlife populations and the design of monitoring and research programs. Using mid-summer aerial survey data for Dall’s sheep (Ovis dalli dalli) in southern Alaska during 1983–2011, we assessed differences in summer habitat selection by sex and reproductive status at the landscape scale in Wrangell-St. Elias National Park and Preserve (WRST). Males and females were highly...
map background search result map search result map Making forest management work in the Gwich'in settlement area, Northwest Territories New records of vascular plants in the Yukon Territory II Stock status of coho salmon in upper Cook Inlet: report to the Alaska Board of Fisheries, January 2005 Eagle River Flats Remediation Project. Comprehensive Bibliography - 1950 to 1998 Isolation and Identification of Photobacterium phosphoreum from an Unexpected Niche: Migrating Salmon Principal facts for gravity data collected in the Copper River basin area, southcentral Alaska Distribution, speciation, and transport of mercury in stream-sediment, stream-water, and fish collected near abandoned mercury mines in southwestern Alaska, USA Genetic variation in caribou and reindeer (Rangifer tarandus ) Area management report for the recreational fisheries of the Upper Copper/Upper Susitna River Management Area, 1996-1997 Analyses of Historic U.S. Bureau of Mines Samples for Geochemical Trace-Element and Rare-Earth-Element Data from the Ray River Watershed, and Kanuti and Hodzana Rivers Uplands, Central Alaska Eagle River Flats pond pumping remediation project: fourth-year operations under the record of decision Flank collapse at Mount Wrangell, Alaska, recorded by volcanic mass-flow deposits in the Copper River lowland Timing and cause of water level fluctuations in Kluane Lake, Yukon Territory, over the past 5000 years White spruce regeneration following a major spruce beetle outbreak in forests on the Kenai Peninsula, Alaska Fishery Management Report for Sport Fisheries in the Arctic-Yukon- Kuskokwim Management Area, 2000-2001 Strategic Plan for Salmon Research in the Kuskokwim River Drainage British Columbia's boreal region Fine-scale assessment of genetic diversity of trembling aspen in northwestern North America Summer habitat selection by Dall’s sheep in Wrangell-St. Elias National Park and Preserve, Alaska Eagle River Flats Remediation Project. Comprehensive Bibliography - 1950 to 1998 Eagle River Flats pond pumping remediation project: fourth-year operations under the record of decision Timing and cause of water level fluctuations in Kluane Lake, Yukon Territory, over the past 5000 years White spruce regeneration following a major spruce beetle outbreak in forests on the Kenai Peninsula, Alaska Analyses of Historic U.S. Bureau of Mines Samples for Geochemical Trace-Element and Rare-Earth-Element Data from the Ray River Watershed, and Kanuti and Hodzana Rivers Uplands, Central Alaska Flank collapse at Mount Wrangell, Alaska, recorded by volcanic mass-flow deposits in the Copper River lowland Summer habitat selection by Dall’s sheep in Wrangell-St. Elias National Park and Preserve, Alaska Area management report for the recreational fisheries of the Upper Copper/Upper Susitna River Management Area, 1996-1997 Principal facts for gravity data collected in the Copper River basin area, southcentral Alaska Distribution, speciation, and transport of mercury in stream-sediment, stream-water, and fish collected near abandoned mercury mines in southwestern Alaska, USA Making forest management work in the Gwich'in settlement area, Northwest Territories Stock status of coho salmon in upper Cook Inlet: report to the Alaska Board of Fisheries, January 2005 Strategic Plan for Salmon Research in the Kuskokwim River Drainage New records of vascular plants in the Yukon Territory II British Columbia's boreal region Genetic variation in caribou and reindeer (Rangifer tarandus ) Isolation and Identification of Photobacterium phosphoreum from an Unexpected Niche: Migrating Salmon Fishery Management Report for Sport Fisheries in the Arctic-Yukon- Kuskokwim Management Area, 2000-2001 Fine-scale assessment of genetic diversity of trembling aspen in northwestern North America