Microtine rodents and ground squirrels of the coastal plain and foothills of the Arctic National Wildlife Refuge: Distribution, densities, and general ecology
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
A microtine rodent trapping survey was done at 3 locations across an altitudecoastal influence gradient in the Arctic National Wildlife Refuge from 2 June 18 August 1982. Each location was trapped 3 times, at monthly intervals. Microtus oeconomus decreased in density and Dicrostonyx torquatus and Lemmus sibericus increased towards the coast. Microtus miurus occurred only at the most inland site. The coastal microtines appeared to be at a low point in their cyclic fluctuation. Arctic ground squirrels Spermophilus parryii were also surveyed at the same locations. Density distributions of S. parryii depends primarily on suitable burrowing conditions and forage quality. Herbivory by, and predator use of microtines and ground squirrels suggests their integral importance in the Arctic ecosystem.
Distribution, abundance, and productivity of fall staging lesser snow geese on coastal habitats of northeast Alaska and northwest Canada, 1983
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the distribution, abundance, and productivity of fall staging lesser snow geese on coastal habitats of northeast Alaska and northwest Canada. The fall staging of lesser snow geese using the coastal plain of the Arctic National Wildlife Refuge and adjacent Yukon and Northwest Territories was monitored. Objectives were to determine chronology of migration and staging, estimate the distribution, and estimate the age ratio, identify habitat types, and document daily activities.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the innovations and guidelines for evaluating salmon enhancement of channel sites in Alaska. An alternative salmon enhancement approach is that of using spawning, incubation, and dualpurpose channels to assist in restoration of depleted pink and chum salmon stocks in Alaskan steams. The innovations and guidelines for channel site selections are discussed.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
Harvest statistics were obtained from 164 marten skulls from the 1987 88 trapping season supplied by trappers on the Nowitna NWR. The sex ration M:F is the trap sample was 1.5:1. The samples juvenile:adult female ration was 3.1:1. Juveniles comprised 49 of the sample. Yearling marten were underrepresented in the sample. An analysis of the temporal distribution of harvest of a trapline operated for the entire trapping season indicated that most marten were harvested in November and January, the percentage of juveniles in the harvest declined as the season progressed, and the percentage of adult females in the harvest increased as the season progressed.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the mineral exploration and development in Alaska during 19771978. This report covers land ownership and acreages stakes under mining claims, mineral production in Alaska, and mineral development.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers bald eagle management guidelines in Oregon and Washington. The purpose of these guidelines is to maintain the environmental conditions that are required for the survival of bald eagles in the Pacific Northwest. The emphasis will be on preventing human disturbance to eagles, particularly during the nesting season. The ultimate objective is to preserve at least present populations of eagles in Oregon and Washington. For management purposes, the following guidelines are divided into sections on Nesting, Feeding and Roosting. Except as otherwise noted, the guidelines apply to both public and private lands.
Observations on the mortality of seabirds in Japanese salmon gillnets made from the Oshoro Maru and Hokusei Maru, summer 1978
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the observations on the mortality of seabirds in Japanese salmon gillnets from the Onshore Maru and Hokuseu Maru during the summer of 1978. This includes the description and history of the Japanese commercial fleets, description of fishing, long lining, salmon gillnetting, and the results. Gillnet mortality results are covered.
Port Valdez, Alaska, and vicinity: A baseline study: Report to the United States Department of the Interior
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers a baseline study of Port Valdez, Alaska and surrounding area. In late July of 1974, research began to establish a collection of baseline data pertaining to the salt marshes of Port Valdez and vicinity. Methods, mapping, data collected and results are included.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report discusses the common eiders nesting and arctic fox predation at Icy Cape, Alaska. Study areas, methods, and results are discussed.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This memo details the historical study and survey of the Attu battlefield locations. The objectives were to determine the historical value and study the feasibility of an interpretive program. Pictures are attached.
Evaluation of techniques used to study vegetation and avifauna in National Petroleum Reserve of Alaska: 1976 NPRA final report
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
The report covers the evaluation of techniques used to study vegetation and avifauna in National Petroleum Reserve of Alaska. This is the 1976 NPRA final report. The objective of this report was to establish population data on waterfowl and other birds of key production areas prior to oil development. Study areas, methods, results, mapping are provided.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
The report provides public reactions to proposed recommendations on management of the National Wildlife Refuge System. This report provides the recommendations and summarizes the public reactions and specifies the audience.
Species accounts of migratory birds at three study areas on the coastal plain of the Arctic National Wildlife Refuge, Alaska, 1983
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the species accounts of migratory birds at 3 study areas on the coastal plain of the Arctic National Wildlife Refuge in Alaska during 1983. The species accounts describe the status, breeding chronology, migration and habitat use of bird species during June August 1983.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This is the master plan for Arctic National Wildlife Refuge. This plan outlines refuge objectives, history, existing conditions, and proposed accomplishments for the future. Maps and pictures are included.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers habitat use and behavior of grizzly bears in the Arctic National Wildlife Refuge. Habitat use and behavior of grizzly bears Ursus arctos wer2 studied from 27 June11 August 1.982 and 24 May29 August 1983, in the Caribou PassKongakut River area of the Arctic National Wildlife Refuge. Data are presented as bearunit hours. A bearunit was defined as one bear, a family unit, or a male bear with consorts. Bear densities are low on the study area 1 bear130260 km2. Intensive searching for bears resulted in the collection of 387 bearunit hours of behavioral information. Six categories 21 subcategories were used to describe behavior. Bears were most often observed feeding, foraging, or resting 114,113, and 88 bearunit hours, respectively. The most common food items were Hedysarum alpinum roots, 1 Equisetum arvense, Boykinia richardsonii flowers and leaves, berries Empetrum nigrum, Vaccinium vitisidaea, and Arctostaphylos rubra, caribou Rangifer tarandus, ground squirrels Spermophilus parryii and microtines. Most use of caribou by bears occurs on the coastal plain at or near the caribou calving grounds. Grizzlies shift their ranges to include areas frequented by caribou. For about 1 month 24 May21 June caribou especially calves are an important food item for grizzlies. Habitat types were described by the dominant topographic and vegetative feature. A total of 398 bearunit hours was collected concerning habitat use. Bears were observed in 6 topographic types. Valley flats, mountain slopehillside, and cutbankgulleycreek were the most common topographic types used 107, 90, and 89 bearunit hours, respectively. A different vegetation classification system was used in 1982 than 1983. Results from 1982 are being converted to the 1983 system. In 1983 bears were observed in 20 vegetation types. Sedge tussock mixedshrub tundra, sedgewillow tundra, and mixedshrub tundra were the most common vegetation types used.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the population dynamics and distribution of muskoxen in the Arctic National Wildlife Refuge, Alaska. Numbers of muskoxen in the Arctic National Wildlife Refuge in northeastern Alaska were estimated to be 257 animals prior to calving in April 1983. In November 1983, 311 muskoxen were counted. An estimated 64 calves were born between late April and late June 1983. The study and species are described, followed by the methods and results. Maps and data are included.
Yellow-billed loon populations on the Colville River Delta, arctic Alaska: Supplemental project report
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the yellowbilled loon populations on the Colville river delta in the Arctic Alaska. The estimates sizes of the 1982 and 1984 yellowbilled look populations on the Colville River delta. We also estimated the numbers of pairs and active nests. Wetlands were surveyed along transects in 1982 and in blocks in1984. Study area, methods and results are provided.
Migratory bird use of the coastal lagoon system of the Beaufort Sea coastline within the Arctic National Wildlife Refuge, Alaska, 1983
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the migratory bird use of the coastal lagoon system of the Beaufort Sea coastline within the Arctic National Wildlife Refuge, Alaska. Aerial surveys were conducted on 10 selected coastal lagoons of Arctic National Wildlife Refuge during 1983 to obtain an index of relative numbers of migratory birds using the lagoon and to determine the relationship between three different survey techniques. Oldsquaw were identified as the major species using the lagoon over 80 of the total population. The total number of oldsquaw observed in lagoons in 1983 approximated 1981 totals and exceeded 1982 numbers. Although the temporal distribution of oldsquaw observed was similar in all three years, the spatial relationships varied. As the season progressed, there appeared to be a westerly shift in oldsquaw use of lagoons. A shift from lagoon to offshore was, also, noted. Comparison of oldsquaw numbers and density observed in a 400m strip transect within the lagoon to the whole lagoon areas showed that the birds were, not randomly distributed and the strip transect cannot be used as an index of oldsquaw number or density in the entire lagoon. A three strip survey Has compared to the total lagoon survey, and revealed that the total lagoon survey remains the best estimate of oldsquaw numbers.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the breeding and feeding ecology of the pigeon guillemot at Naked Island, Alaska, as well as surveys of the Naked Island complex. Methods including breeding and feeding ecology of the pigeon guillemot, seabird and marine mammal surveys, results and discussion are included.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report covers the results of monitoring studies for puffins in the western Aleutian Islands in Summer 1988. Populations and productivity of tufted and horned puffins at selected sites in the western Aleutian Islands are covered. Objective of the study was measure chick growth rates in comparison of the marine environment.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
The National Wildlife Refuge System NWRS Planning Workbook contains the ninestep process that we 11 be used to plan lands administered by the NWRS. It has been developed specifically as an adjunct to the Refuge Manual and conforms to the refuge master planning objectives and policies stated in Chapter 5 RM l, Master Planning. The basic purpose of the Planning Workbook is to provide the impetus and instructions for the longrange planning of individual refuges, resulting in the formulation of the refuge guidance documents referred to as Master Plans.
Investigations of interior Arctic coastal plain avifauna in National Petroleum Reserve of Alaska: 1977 Singiluk final report
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This document covers the investigations of interior Arctic coastal plains avifauna in national petroleum reserve of Alaska. The effects of petroleum development on water birds and their wetland resources were studied at Singiluk on the interior Arctic Coastal Plain of National Petroleum Reserve Alaska from June to August 1977. Species discussed include Longspurs, Pectoral Sandpipers, Oldsquawa, Pintails and Whitefronted geese. Vegetation and invertebrates were also studied to determine the food habits of avian species in the southern portion of the Alaska Arctic Coastal Plain.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
The report provides an overview on the hydroelectric project impacts on Stikine river ecosystems. The objective of this study was to develop a report which would aid managers in predicting and mitigating effects of hydroelectric development on ecosystems. This report describes the structure and function of affected ecosystems and reviews general effects of hydroelectric development and present summarized information from ongoing Stikine River studies.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This report describes the aerial photography program in 1978 National Petroleum Reserve of Alaska. The study areas, methods, results are provided.
Published By US Fish and Wildlife Service, Department of the Interior
Issued almost 10 years ago
Summary
Description
This document outlines scientific and government writing style and technique. Including outlines and commonly misspelled words.