Skip to main content
Advanced Search

Filters: Types: Downloadable (X) > Categories: Publication (X) > Categories: Data (X) > partyWithName: National Park Service Natural Resource Program Center National Park Service (X)

13 results (33ms)   

View Results as: JSON ATOM CSV
thumbnail
The National Park Service (NPS) approved the use of Calcium Chloride as a dust suppressant on the Park road after four years of research. A formal monitoring program to track the spatial and temporal movement of CaCl2 concentrations along the Park road began in 2005. Fifteen terrestrial sites and fourteen water body locations were selected to monitor the movement of chloride from the roadbed into roadside soils and surface waters. Initial results showed wide variability in chloride concentrations in soil adjacent to the roadbed, while waterbodies generally had low concentrations (ABR 2006). This report presents 2007 results for the dust palliative chloride monitoring program.During the summer of 2007, 35 applications...
thumbnail
Normalized difference vegetation index (NDVI) derived from AVHRR and MODIS satellitesensors is summarized in five northern Alaskan National Park Service units dominated by arctictundra. NDVI is an index of vegetation productivity that is closely related to the warmth ofsummer growing seasons in the arctic. Mean NDVI for ecological sections (broad landscapescalemapping units) is highest for densely vegetated lowlands, lowest in sparsely vegetated highmountain areas, and intermediate in lowlands with significant area of lakes. NDVI during greenup(June) varies 20 to 40% between years, while peak NDVI and late-season NDVI vary 10 to20% between years. These short-term variations are closely linked to current-year variations...
thumbnail
This report summarizes methods and results for an aerial Dall’s sheep (Ovis dalli dalli) survey conducted in 2008 by the National Park Service Arctic Network Inventory and Monitoring Program, with support from the Alaska Department of Fish and Game, in the northeastern portion of Gates of the Arctic National Park and Preserve, Alaska. This area includes the Itkillik Preserve, where the highest densities of Dall’s sheep in the Park and Preserve have been found, and both subsistence and sport hunting are allowed. Approximately 1905 km2 of delineated habitat were surveyed via small, fixed-wing aircraft from 9-14 July. Sheep groups were counted and classified as lambs, ewe-like sheep (ewes, yearlings and rams with less...
thumbnail
Retrogressive thaw slumps (RTS) are caused by thaw of massive ground ice on slopes and combine subsidence, mass movement, and water erosion. They can expose several hectares of bare soil that is susceptible to erosion into nearby water bodies. In the summer of 2010, oblique aerial-photographs of 24 selected RTS in Noatak National Preserve (NOAT) and Gates of the Arctic National Park and Preserve (GAAR) were taken with a hand-held, 35-mm digital camera. This photography was used to create high-resolution three-dimensional topographic models with photographic overlay. Accurate ground control was obtained at 14 of the slumps by surveying the location of temporary targets that were captured on the aerial photographs...
thumbnail
An inventory of the vascular plant flora of Wrangell-St. Elias National Park and Preserve, Alaska, was conducted from 1994 to 1997 and in 2003. This 13.2 million acre National Park comprises 16% of all National Park Service lands. The objectives of the inventory were to assess the genetic diversity of the region, identify rare taxa and areas of phytogeographic interest and to assist park managers with planning and environmental compliance. Three hundred seventeen sites were surveyed and 6,680 specimens vouchered. The specimens documented 917 taxa in the park, 11 new to the flora of Alaska and 217 new to the park’s flora. There was one U.S. Fish and Wildlife Candidate Species, 524 occurrences of 91 taxa with an Alaska...
thumbnail
The Final Determination for the Cantwell Traditional Use Area (TUA) allows subsistence users to operate off-road vehicles (ORV) within the Cantwell TUA for subsistence hunting purposes. Following this decision, Denali National Park and Preserve (DNP&P) established an ORV monitoring program to determine annual ORV use levels, track damage to resources and monitor the condition of open trails and routes with the Traditional Use Area. Of particular interest were identifying any severe impacts affecting trail sustainability or incursions beyond open established trails, as well as the amount of use on the open trails. We also seek to monitor the recovery of areas previously disturbed by ORVs upon closure to determine...
thumbnail
A systematic survey was made of three National Park Service units in northern Alaska for active-layer detachments (ALDs) and retrogressive thaw slumps (RTS) using high-resolution satellite imagery from 2006 and 2008. ALDs and RTS develop by localized thaw of permafrost, and have the potential to expose significant areas of soil to erosion. I identified 22 ALDs in Bering Land Bridge National Preserve, 22 in Cape Krusenstern National Monument, and 14 in Kobuk Valley National Park. These ALDs are typically 10 to 30 m wide and up to 300 m long, and on the average expose about 1000 sq m of bare soil each, amounting to a total area of about 6 ha in the 3 NPS units. The ALDs occur on long, well vegetated slopes of moderate...
    map background search result map search result map White spruce cone and seed production in relation to climate in the Rock Creek watershed of Denali National Park and Preserve during the period 1992-2007: Annual report for the Central Alaska Network Vegetation Monitoring Program 2008 2009 ORV monitoring results: Pyramid Peek Trail, Windy Creek Trail, and Cantwell Creek Floodplain Route, Cantwell Traditional Use Area, Denali National Park and Preserve Monitoring chloride migration from dust palliative applications on the Park road, Denali National Park and Preserve, Alaska: 2007 summary report Wolf monitoring protocol for Denali National Park and Preserve, Yukon-Charley Rivers National Preserve and Wrangell-St. Elias National Park and Preserve, Alaska Long Lake Weir operations protocol, Central Alaska Network, Wrangell-St. Elias National Park and Preserve An Inventory of the Vascular Flora Wrangell-St. Elias National Park and Preserve, Alaska 2008 aerial Dall’s sheep survey in the Itkillik Preserve, Gates of the Arctic National Park and Preserve, Alaska Mapping of erosion features related to thaw of permafrost in Bering Land Bridge National Preserve, Cape Krusenstern National Monument, and Kobuk Valley National Park Monitoring of retrogressive thaw slumps in the Arctic Network, 2010 baseline data: Three-dimensional modeling with small-format aerial photographs Satellite greenness data summary for the Arctic Inventory and Monitoring Network, 1990-2009 Evaluation of the sensitivity of inventory and monitoring national parks to nutrient enrichment effects from atmospheric nitrogen deposition: Central Alaska Network (CAKN) Evaluation of the sensitivity of inventory and monitoring national parks to acidification effects from atmospheric sulfur and nitrogen deposition: Central Alaska Network (CAKN) An Inventory of the Vascular Flora Wrangell-St. Elias National Park and Preserve, Alaska Mapping of erosion features related to thaw of permafrost in Bering Land Bridge National Preserve, Cape Krusenstern National Monument, and Kobuk Valley National Park White spruce cone and seed production in relation to climate in the Rock Creek watershed of Denali National Park and Preserve during the period 1992-2007: Annual report for the Central Alaska Network Vegetation Monitoring Program 2008 2009 ORV monitoring results: Pyramid Peek Trail, Windy Creek Trail, and Cantwell Creek Floodplain Route, Cantwell Traditional Use Area, Denali National Park and Preserve Monitoring chloride migration from dust palliative applications on the Park road, Denali National Park and Preserve, Alaska: 2007 summary report 2008 aerial Dall’s sheep survey in the Itkillik Preserve, Gates of the Arctic National Park and Preserve, Alaska Long Lake Weir operations protocol, Central Alaska Network, Wrangell-St. Elias National Park and Preserve Monitoring of retrogressive thaw slumps in the Arctic Network, 2010 baseline data: Three-dimensional modeling with small-format aerial photographs Satellite greenness data summary for the Arctic Inventory and Monitoring Network, 1990-2009 Wolf monitoring protocol for Denali National Park and Preserve, Yukon-Charley Rivers National Preserve and Wrangell-St. Elias National Park and Preserve, Alaska Evaluation of the sensitivity of inventory and monitoring national parks to nutrient enrichment effects from atmospheric nitrogen deposition: Central Alaska Network (CAKN) Evaluation of the sensitivity of inventory and monitoring national parks to acidification effects from atmospheric sulfur and nitrogen deposition: Central Alaska Network (CAKN)