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Displaying entries 1 - 20 of 40 in total

Slow Recovery of Lichen on Burned Caribou Winter Range in Alaska Tundra: Potential Influences of Climate Warming and Other Disturbance Factors

US Bureau of Land Management (BLM) - Lichen regeneration timelines are needed to establish sound fire management guidelines for caribou (Rangifer tarandus) winter range. Paired burned and unburned permanent vegetative cover transects were established after 1981, 1977, and 1972 tundra fires in northwestern Alaska to document regrowth of tundra vegetation including caribou forage lichens in the wintering range of Alaska's largest...
Complete
2007-03-01
2018-08-09 15:06:29 -0800
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Trophic transfer of persistent organochlorine contaminants (OCs) within an Arctic marine food web from the southern Beaufort–Chukchi Seas

University of Guelph (GUELPH) - Stable isotope values and concentrations of persistent organochlorine contaminants (OCs) were determined to evaluate the near-shore marine trophic status of biota and biomagnification of OCs from the southern Beaufort–Chukchi Seas (1999–2000) near Barrow, AK. The biota examined included zooplankton (Calanus spp.), fish species such as arctic cod (Boreogadus saida), arctic char (Salvelinus...
Remote
2003-03-06
2018-08-09 15:06:30 -0800
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Organic nutrients and contaminants in subsistence species of Alaska: Concentrations and relationship to food preparation method

Institute of Arctic Biology UAF (IAB) - To determine nutrient and contaminant concentrations, document concentration changes related to common preparation methods and provide a basic risk-benefit analysis for select subsistence foods consumed by residents of Kotzebue, Alaska. Eleven organic nutrients and 156 persistent organic pollutants (POPs) were measured in foods derived from spotted seals and sheefish. Moses, S.K., A.V....
Remote
2009-09-01
2018-08-09 15:02:59 -0800
Data Full Record

Seasonal movements and habitat use of Broad whitefish (Coregonus nasus) in the Teshekpuk Lake region of the National Petroleum Reserve-Alaska, 2003-2005

Alaska Department of Fish and Game (ADFG) - A primary objective of the study was to determine life history characteristics and seasonal habitat use patterns of broad whitefish using Teshekpuk Lake, the Mayoriak River and its tributaries by means of radio-telemetry. Data presented in the report represent fish radio tagged in 2003-05. Morris, W.A, L.Moulton, J.Bacon, M.Whitman. 2006. Seasonal movements and habitat use of Broad whitefish...
Remote
2006-09-01
2018-08-09 15:03:11 -0800
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Evaluation of stream crossing structures for providing fish passage in a tundra stream; fish sampling of Fawn Creek, Prudhoe Bay, Alaska, 2004

Alaska Department of Fish and Game (ADFG) - Fyke nets were set throughout Fawn Creek during summer of 2004 to investigate the effectiveness of crossing structures for fish passage. Morris, W.A, and J. F. Winters. 2008. Evaluation of stream crossing structures for providing fish passage in a tundra stream; fish sampling of Fawn Creek, Prudhoe Bay, Alaska, 2004. Alaska Department of Natural Resources Tech. Rept. 04-05. Office of Habitat...
Remote
2004-12-01
2018-08-09 15:03:22 -0800
15 26 12 407 logo adfg
Data Full Record

A Survey of Stream Crossing Structures in the North Slope Oilfields

Alaska Department of Fish and Game (ADFG) - Survey of stream crossing structures in the oilfileds including additional information regarding fish distribution within oilfield streams. The report is organized on a geographic basis within the oilfields from Endicott in the east to Meltwater in the western Kuparuk area. Crossing structures in the Badami or Alpine fields were not examined. Breaches in the Endicott and West Dock causeways...
Remote
2008-02-01
2018-08-09 15:06:00 -0800
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Vegetation monitoring at Sheenjek LTEM site

US Fish and Wildlife Service (USFWS) - Repeat sampling of vegetation communities, soils, and permafrost on plots at 5-year intervals. We established five long-term ecological monitoring sites in the Arctic National Wildlife Refuge, one in each of the major ecological zones of the refuge (Figure 1). An ecological zone is an area with similar climatic regime, vegetation, and topographic patterns, and geomorphic and hydrologic...
Ongoing
1997-01-01
2018-08-09 15:08:20 -0800
09 43 17 665 fws 300x300
Data Full Record

Assessing the differenced Normalized Burn Ratio’s ability to map burn severity in the boreal forest and tundra ecosystems of Alaska’s national parks.

National Park Service (NPS) - Burn severity strongly influences post-fire vegetation succession, soil erosion, and wildlife populations in the fire-adapted boreal forest and tundra ecosystems of Alaska. Therefore, satellite-derived maps of burn severity in the remote Alaskan landscape are a useful tool in both fire and resource management practices. To assess satellite-derived measures of burn severity in Alaska we...
Remote
2008-08-06
2018-08-09 15:06:30 -0800
10 20 02 506 nps logo
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Trans-Alaska Pipeline System 2002 Fish Habitat Survey

Alaska Department of Fish and Game (ADFG) - The 1288 km (800 mi) Trans-Alaska Pipeline System (TAPS), including the 284 associated access roads, crosses 800 rivers and streams between Prudhoe Bay and Valdez, Alaska. These waters are known to support 5 species of anadromous Pacific salmon Oncorhynchus and 25 other anadromous and resident fish species. Fish distribution in freshwaters along TAPS has been the subject of many field...
Local
2002-12-01
2018-08-09 15:06:48 -0800
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Salt Marshes of the Arctic National Wildlife Refuge

University of Alaska Fairbanks (UAF) - The purpose of this study was to map all salt marshes along the coastline of the Arctic National Wildlife Refuge, from the Canning River to the Canadian border. These salt marshes are found on the northern coast of the Arctic NWR, along the shores of the Beaufort Sea.
Local
1999-05-01
2018-08-09 15:06:55 -0800
09 31 36 595 uaf logo
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Organohalogen concentrations in blood and adipose tissue of Southern Beaufort Sea polar bears

University of Alaska Fairbanks (UAF) - 151 organohalogen chemicals (OHCs) in whole blood and subcutaneous fat of 57 polar bears sampled along the Alaskan Beaufort Sea coast in spring, 2003 were analyzed for major organochlorine pesticides, PCBs, PBDEs and their congeners. Bentzen, T.W., D. Muir, E. Follmann, S. Amstrup, G. York, and T.O’Hara. 2008. Organohalogen concentrations in blood and adipose tissue of polar bears along...
Remote
2008-09-04
2018-08-09 15:03:22 -0800
09 31 36 595 uaf logo
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Trophic relationships in an Arctic food web and implications for trace metal transfer

Institute of Arctic Biology UAF (IAB) - Arctic mammals that were harvested for subsistence were analyzed for Ag, Cd, and THg. Stable carbon and nitrogen isotopes were evaluated to establish trophic interactions within the Arctic food web. Food web magnification factors (FWMFs) and biomagnification factors for selected predator–prey scenarios (BMFs) were calculated to describe pathways of heavy metals in the Alaskan Arctic. Species...
Remote
2006-01-04
2018-08-09 15:03:25 -0800
Data Full Record

Fish sampling of tundra streams and lakes in the Kuparuk River and Milne Point units, North Slope oil fields, Alaska, 2006 and 2007

Alaska Department of Fish and Game (ADFG) - Fyke nets were fished in ten streams and two lakes between August 8 and August 14, 2006. Fyke nets were reset in eight of the ten creeks and at two lakes between July 5 and July 12, 2007 . Nine of the streams and the lakes surveyed had not previously been sampled for fish. The July 2007 sampling occurred at the same creek sites as in 2006 with the exceptions that Kalubik and East creeks, and...
Remote
2005-08-01
2018-08-09 15:06:02 -0800
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Ecological Land Survey in the Northeast Planning area of the National Petroleum Reserve Alaska (NPRA), 2002

ConocoPhillips (CPAI) - The objectives of this ecological land survey were to: 1)Conduct field survey of ecosystem components including geomorphology (surface geology), topography, soils, hydrology and vegetation (land cover) within the study area 2)Evaluate the relationships among ecosystem components 3)Classify and map ecological components through an integrated terrain unit approach 4)Aggregate...
Complete
2003-04-01
2018-11-15 16:51:14 -0900
Cpialogo 13 41 17 434 abr logo
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Ecological Land Survey for the Colville River Delta, Alaska 1996

Ecological%20land%20survey BP Exploration Alaska Inc. (BPXA) - In this study, we used an ecological land survey (ELS) mapping approach that inventoried terrain units (surficial geology, waterbodies), surface forms (primarily ice-related features), and vegetation (land cover) characteristics on the delta and adjacent coastal plain (117,142 ha; 289,464 acres). This information was used to map integrated terrain units (ITUs) that incorporated the three...
Complete
1997-09-01
2018-08-09 15:08:34 -0800
13 41 17 434 abr logo
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Survey of fish habitats in the Teshekpuk Lake region, 2003-2005. Final report. December 2007 (companion report to Technical Report 06-04)

Alaska Department of Fish and Game (ADFG) - Fish habitats and populations in and around Teshekpuk Lake were investigated during summers 2003 to 2005. Sampling was primarily by fyke net, supplemented by gill net. The area of focused study was selected after obtaining traditional local knowledge and reviewing fishing patterns in the region. While broad whitefish was the primary species of interest, data were obtained on all captured...
Local
2007-12-01
2018-08-09 15:06:43 -0800
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Dietary biomagnification of organochlorine contaminants in Alaskan polar bears

University of Alaska Fairbanks (UAF) - The variation in PCB153 and oxychlordane concentration are strong indicators of variation in diet and biomagnification of organochlorines among polar bears related to their sex, age, and trophic position. Bentzen, T.W., E.H. Follmann, M.J. Wooller, D.C.G. Muir, S.C. Amstrup, G.W. York and T. M. O’Hara. 2008. Dietary biomagnification of organochlorine contaminants in Alaskan polar bears....
Remote
2008-01-01
2018-08-09 15:06:54 -0800
09 31 36 595 uaf logo
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Effects of Storm Surges on the Beaufort Sea Coast, Northern Alaska

US Bureau of Land Management (BLM) - In 1970 a major storm surge caused by gale force westerly winds inundated low lying tundra plains and deltas as far as 5000m inland and left a driftwood line as much as 3.4m above normal sea level along the Beaufort Sea coast. Coastal retreat and thermoerosion are accelerated and sediment transport altered. Evidence suggests an approximate 100 year recurrence interval for similar surges with...
Local
1979-12-01
2018-08-09 15:06:56 -0800
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Arctic Marine Shipping Assessment 2009 Report

Arctic Council (ARCTIC) - Circumpolar assessment of ship transport on the Arctic Ocean and marine infrastructure requirements along with their potential impacts on humans and the Arctic marine environment.
Remote
2018-08-09 15:06:59 -0800
Data Full Record

Vitamin A and E tissue distribution with comparisons to organochlorine concentrations in the serum, blubber and liver of the bowhead whale

North Slope Borough (NSB) - Some persistent organic contaminants can have a negative effect on retinol concentration in serum of pinnipeds and cetaceans. Rosa, C., Blake, J.E., L. Mazzaro, P. Hoekstra, G.M.Ylitalo, T.M. OHara. 2007. Vitamin A and E tissue distribution with comparisons to organochlorine concentrations in the serum, blubber and liver of the bowhead whale (Balaena mysticetus) Comparative Biochemistry and...
Remote
2007-07-30
2018-08-09 15:03:09 -0800
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