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Paper prepared for presentation at the Session Fish Habitat Compensation – A Requirement for Some Transportation Projects Of the 2008 Annual Conference of the Transportation Association of Canada Toronto, Ontario
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Over the past fifty years Alaska has experienced an increase in mean annual temperature. This warming may be causing significant changes in hydrology and permafrost dynamics. In recent decades, Native Americans and land managers have reported losses of water bodies and surface water area in interior Alaska. We conducted a study to determine the degree to which these informal observations were representative of a regional trend in surface water area loss. This study examines closed-basin water bodies in nine regions across Alaska: 1) Copper River Basin, 2) Talkeetna, 3) Tetlin National Wildlife Refuge, 4) Denali National Park, 5) Innoko Flats National Wildlife Refuge, 6) Minto Flats State Game Refuge, 7) Stevens...
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The Slims River was monitored for global solar radiation, air temperature, discharge, suspended sediment, and dissolved load in 1993 and 1994. Peak seasonal discharge occurred late in the summer and reflects a typical glacierized basin hydrograph, with increased bare ice surfaces contributing strongly to discharge in July and August. Air temperature, rather than global solar radiation, was most strongly correlated with discharge in both years, but during sustained ablation, air temperature becomes a poor index of meltwater production. Precipitation was infrequent and of low magnitude. The variance in suspended sediment concentration could be explained only in part by discharge; frequent clockwise hysteresis and...
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Data from 129 shallow riverine takes within the Yukon Flats National Wildlife Refuge (between 65degrees 45degreesN and 67degrees 30degreesN and 142degrees 30degreesW and 150degrees 00'W) are presented as a baseline contribution to the regional limnology of Alaska. Ion composition reflected the composition of carbonate alluvium within the region; in most lakes Ca > Mg and bicarbonate dominated the anions (similar to90%). In lakes where alkali deposits occurred, Na, Mg and bicarbonate were the principal ions. Some 25% of the takes were slightly brackish (conductivity >500 S) to brackish. The lakes are colored, with 18 to 447 Pt-units. And, they are fertile, with over 70% classified as eu-or hypereutrophic on the basis...
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Climate change could have a drastic effect on the wetlands that many waterbirds depend on for their reproduction, especially in northern ecosystems such as the boreal forest. The Horned Grebe, a species that is thought to be declining based on Breeding Pair Survey data, depends exclusively on northern wetlands for nesting and rearing young and therefore may be a good indicator of wetland health and productivity. The purpose of this study was to examine the effects of limnological variables on the reproductive success, specifically nesting success and clutch size, of the Horned Grebe in interior Alaska. We monitored 45 grebe nests located on seven different lakes during the summer of 2005 at the Long Lake wetland...
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This document presents the results of surface-water-quality data retrievals for Yukon-Charley Rivers National Preserve from six of the United States Environmental Protection Agency's (EPA) national databases: (1) Storage and Retrieval (STORET) water quality database management system; (2) River Reach File (RF3); (3) Industrial Facilities Discharge (IFD); (4) Drinking Water Supplies (DRINKS); (5) Flow Gages (GAGES); and (6) Water Impoundments (DAMS). The document provides: (1) a complete inventory of all retrieved water quality data, water quality stations, and the entities responsible for data collection; (2) descriptive statistics and appropriate graphical plots of water quality data characterizing annual and seasonal...


map background search result map search result map Fish habitat compensation projects along Yukon highways Carbon and Nitrogen Export from the Yukon River Basin Using Water Isotope Tracers to Investigate Past and Present Water Balance Conditions in the Old Crow Flats, Yukon Territory Selected organic compounds and trace elements in streambed sediments and fish tissues, Cook Inlet Basin, Alaska Baseline Water Quality Data Inventory and Analysis: Yukon-Charley Rivers National Preserve Hydrometeorology, Suspended Sediment, and Conductivity in a Large Glacierized Basin, Slims River, Yukon Territory, Canada (1993-94) Nitrate Source Indicators in Ground Water of the Scimitar Subdivision, Peters Creek Area, Anchorage, Alaska Ground-water age and its water-management implications, Cook Inlet Basin, Alaska Yukon River Unified Watershed Assessment Limnology of shallow lakes in the Yukon Flats National Wildlife Refuge, Interior Alaska Using Remote Sensing to Examine Changes of Closed-basin Surface Water: Area in Interior Alaska from 1950-2002 Influence of limnological characteristics and other variables on the nesting success of Horned Grebes in interior Alaska Monitoring Lake Ice Using Multi-polarized SAR Imagery Temperature Monitoring on Select Yukon River Tributaries Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska Temperature monitoring of Canadian and Alaskan Yukon River tributaries (URE-25-11), final report to the Yukon River Panel APPLICATIONS OF SHRUB DENDROCHRONOLOGY IN TRACKING DECADAL CHANGES IN POND MARGIN DYNAMICS Tracking hydrological responses of a thermokarst lake in the Old Crow Flats (Yukon Territory, Canada) to recent climate variability using aerial photographs and paleolimnological methods Methane and carbon dioxide emissions from 40 lakes along a north–south latitudinal transect in Alaska Nitrate Source Indicators in Ground Water of the Scimitar Subdivision, Peters Creek Area, Anchorage, Alaska Hydrometeorology, Suspended Sediment, and Conductivity in a Large Glacierized Basin, Slims River, Yukon Territory, Canada (1993-94) Tracking hydrological responses of a thermokarst lake in the Old Crow Flats (Yukon Territory, Canada) to recent climate variability using aerial photographs and paleolimnological methods Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska Baseline Water Quality Data Inventory and Analysis: Yukon-Charley Rivers National Preserve Using Water Isotope Tracers to Investigate Past and Present Water Balance Conditions in the Old Crow Flats, Yukon Territory APPLICATIONS OF SHRUB DENDROCHRONOLOGY IN TRACKING DECADAL CHANGES IN POND MARGIN DYNAMICS Monitoring Lake Ice Using Multi-polarized SAR Imagery Selected organic compounds and trace elements in streambed sediments and fish tissues, Cook Inlet Basin, Alaska Influence of limnological characteristics and other variables on the nesting success of Horned Grebes in interior Alaska Limnology of shallow lakes in the Yukon Flats National Wildlife Refuge, Interior Alaska Ground-water age and its water-management implications, Cook Inlet Basin, Alaska Methane and carbon dioxide emissions from 40 lakes along a north–south latitudinal transect in Alaska Using Remote Sensing to Examine Changes of Closed-basin Surface Water: Area in Interior Alaska from 1950-2002 Fish habitat compensation projects along Yukon highways Carbon and Nitrogen Export from the Yukon River Basin Temperature monitoring of Canadian and Alaskan Yukon River tributaries (URE-25-11), final report to the Yukon River Panel Yukon River Unified Watershed Assessment Temperature Monitoring on Select Yukon River Tributaries