Project SummaryHistorical Biodiversity at Remote Air Force Sites |
Name Historical Biodiversity at Remote Air Force Sites Region Alaska State Alaska Location Point Barrow and Barter Island Long Range Radar Sites, AK Date of this update March 5, 1998
Habitat Restoration/Protection Wetlands
River systems
Beaches/Dunes
Offshore areas
Mangroves
Assisting Species at Risk Tundra Plants and Invertebrates
Pollution Mitigation Non-Point Source Pollution
Other (describe) Coastal tundra adjacent to beaches are the habitat, but restoration was not funded as part of this effort. The project this was a study, and will ultimately provide information for upcoming management decisions for protection/restoration.
The project built inventories of present and past biotic communities at two Air Force remote sites as a basis for establishing guidelines for mitigation and restoration. Inventories included modern plant communities, modern insects, Holocene plant communities, and Holocene insects. The goal was to link these data together, to give a view of the history of biological communities and their responses to environmental change over the last 10,000 years.
The areas studied are military reservations built by the U.S. Air Force in the 1950s as part of the Defense Early Warning (DEW Line) system of radar sites across the high latitudes of North America. The DEW Line Stations were converted to LRRS in the 1980s and presently function as remote Air Force sites in the Alaska Radar System. Coastal tundra biological communities are present at Point Barrow LRRS and Barter Island LRRS as well as five other Air Force radar sites located on the North Slope of Alaska.
Fossil samples were collected below the surface to a depth into the permafrost. The surface soils thaw each summer for limited plant growth; underlying it is permafrost which is permanently frozen soil. A chain saw was needed to collect some samples from frozen peat. Frozen peat is a permafrost soil with a large component of partially decomposed vegetation.
The study found significant differences in both ancient and modern environments between eastern and western regions along the arctic coast of Alaska. These differences are most likely caused by varying substrates and different climatic conditions. A suite of plant species that may be suitable for revegetation efforts at arctic coastal sites was identified. The outward appearance of the vegetation at the two LRRS is very similar and typical of coastal areas across northern Alaska.
During the early Holocene, the vegetation at what would become Point Barrow LRRS was dominated by grasses and heaths; conditions were probably moister and warmer. The Holocene is the period of geologic time since the last ice age. The dominance of grass was not recorded at what would become Barter Island LRRS. The oldest sample from Barter Island [10,500 years before present (yr BP)] yielded a significantly different insect assemblage, with species that are indicative of substantially warmer climatic conditions. The fossil taxa here and elsewhere in arctic Alaska and Yukon indicate that warmer climate conditions could have supported a coniferous forest, only for a brief interval of time probably about 11,000-10,000 yr BP. This is the same period of time that the North Slope archeological records have shown the area to be first inhabited by man. There is no support that a forest existed at that earlier time, the vegetation was similar to today's where the harsh climate keeps the vegetation to only inches high.
Was a cost-benefit study conducted for this project? yes/no If yes, provide a summary of findings.
No, successes (cost benefit) are not quantified.
Lead - U.S. Air Force, 611th Civil Engineer Squadron, Natural Resource Management - Project Management & Funding
Laboratory Assistance - Alaska Dept. Of Natural Resources' Alaska Plant Material Center
University of Colorado Institute of Arctic and Alpine Research - Principal Investigator
All-Russia Research and Institute for Hydrology and Engineering Geology - Field Research Assistance
North Slope Borough, Barrow AK - Logistical Assistance
Federal $105,000 Non Federal State government Local government Private industry Public interest groups Total $105,000
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None Specified
Incomplete, an applicable example was not available
Project is underway, expect a draft in March 98 and final report May 98
Initiation date September 25, 1995 Completion date Current stage Initiated
Mr. Gene V. Augustine, USAF, 611 CES/CEVPN
Principle Investigator:
Mr. Julian B. Fischer, USFWS, AMNWRRefuge Assistant Manager:
Mr. Jeff Williams, USFWS, AMNWR
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This page was last updated on Saturday, 24-Jun-2000 11:48:46 EDT
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