Abstract This rapid method makes use of the stable yellow colour complex developed when an excess a molybdate solution is added to acidified vanadate and orthophosphate; all three reagents required can be used in composite solution. Details for determination water‐soluble total phosphate are given using Spekker photoelectric absorptiometer. Results agree within 2.5% those obtained by standard gravimetric method, on nine fertilizers being given.

Spring and summer home ranges local movements of arctic foxes (Alopex lagopus) were studied from 1975 to 1977 at the Prudhoe Bay oil-development area in northern Alaska. Twenty-seven adult 62 juvenile captured, marked, released. Nine adults 5 juveniles equipped with radio collars monitored during 1976 1977. Home range size was 20.8 +/- 12.5 (SD) km/sup 2/ for 4 3.7 1.7 juveniles. configuration similar all marked members individual families. Adult nocturnal territorial. Foxes used sites...

A total of 193 Arctic Foxes (Alopex lagopus) have been ear-tagged in northern Alaska since March 1975.Eighteen tagged foxes recovered their release; seven involved long-distance movements ranging from 129 to 945 km, some which were apparently made irrespective local food availability.Maximum average travel rate during was 24 km/d.

Cesium-137 concentrations in Alaskan arctic ecosystem components during the period 1962–1965 varied with seasonal and environmental conditions, emphasizing important influence of ecologic factors upon fallout accumulation lichen–caribou(reindeer)–man food chain. Concentrations lichens at Anaktuvuk Pass, Alaska increased time among several species. Caribou flesh contained maximum 137Cs levels winter periods lowest values summer months corresponding to lichen utilization. Body burdens natives...

Journal Article Den Use by Arctic Foxes in Northern Alaska Get access Lester E. Eberhardt, Eberhardt Applied Ecology Section, Pacific Northwest Laboratory, P.O. Box 999, Richland, WA 99852Group LS-6, Los Alamos National 1663, Alamos, NM 86545Dames & Moore, 800 Cordova Street, Suite 101, Anchorage, AK 99501 Search for other works this author on: Oxford Academic Google Scholar Robert A. Garrott, Garrott Wayne C. Hanson of Mammalogy, Volume 64, Issue 1, 28 February 1983, Pages 97–102,...

During the summer of 1962, levels radioactivity in over 700 people at four villages above Arctic Circle Alaska were measured with a transportable whole-body counter. The averages for body burden cesium-137 much higher than average rest United States. interior village Anaktuvuk Pass had highest cesium-137, which was 421 nanocuries; maximum 790 nanocuries.

Whole-body burdens of radionuclides, especially cesium-137, were determined in 703 northern Alaskan Eskimos during the summer 1962. Correlation these amounts with dietary information obtained from subjects showed Cs137 body directly related to caribou or reindeer consumed. Maximum found residents Anaktuvuk Pass, where an average adult contained about 450 nc. Lowest values occurred among who ate substantial marine mammals and fish. Natives equilibrium principal source their diet 10 times...

The absence of garbage in fox scats collected the Colville Delta area was expected because unavailable to these foxes. Foxes from Prudhoe Bay, however, had access quantities as a result petroleum development activities. Most occupied dens Bay were littered with garbage. Telemetry investigations conducted conjunction our study food habits indicated that foxes frequented areas human activity solicit handouts and forage disposal sites. reason for low occurrence is undoubtedly related lack...

The behavior of nine families denning arctic foxes was studied from blinds erected near occupied dens June to August 1976 in the Prudhoe Bay area and 1978 1979 Colville River Delta northern Alaska. Six hundred forty-eight hours data representing 27 continuous 24-h observation periods were analyzed. Pups first appeared above ground June, when they 3–4 weeks old. Observability pups at increased until 8 old, which time began spending away dens. Both adult female male returned den periodically...

Abstract-Data from several field studies of plutonium were evaluated to identify environmental factors that result in redistribution this element within ecosystems. When released terrestrial ecosystems, is almost quantitively transferred and retained by soils. Thus, processes which transport soil ecosystems predominate the plutonium. Erosion soils wind water principal means translational movement Soil erosion also dominate biological surfaces particularly arid semi-arid regions U.S....

137Cs concentrations were measured in lichens, caribou and Eskimos at Anaktuvuk Pass, Alaska, during summers of 1962 1963 approximately 2-month intervals the period January 1964, through April 1965. Maximum body burdens occurred summer months then decreased steadily until following spring. This seasonal cycle resulted from Eskimo practice killing storing times highs lows flesh, which formed food base for village. 1–2 after maximum flesh. about 50 per cent greater than 1962, 1964 twice those...

Measurements of the cesium-137 content northern Alaskan natives during summer 1964 indicated that adults interior village Anaktuvuk Pass had highest average body burden: 1280 nanocuries cesium-137. This is an increase 200 percent over burden found in 1962 and 100 1963. The greatest a native was 2.4 microcuries cesium-137, but all, 3.0 microcuries, measured non-native living mainly on caribou meat. Sodium-22 samples urine from Eskimos, subsequently Eskimos themselves reindeer

The concentration of zinc-65 in marine animals and plants near the mouth Columbia River is presented. Amounts radiozinc found biota diminished rapidly with distance from river mouth. highest levels were plankton, algae, mollusks. Of human foods, oysters exhibited levels.

Concentrations of worldwide fallout 137Cs were measured in the lichencaribou-Eskimo food chain northern Alaska during period 1962–79. Pronounced inputs occurred after major nuclear weapons tests atmosphere and was transmitted through to Eskimos with about a 2-yr delay due environmental parameters. Caribou (Rangifer tarandus) meat sampled spring harvest contained 4 times concentration lichens obtained from their winter range. Calculated caribou ingestion rates Anaktuvuk Pass ranged ∼1 kg/day...

Aerial surveys were an efficient and accurate means of locating arctic fox dens in northern Alaska, but some error was introduced through the misidentification ground squirrel dens. Forty-two identified within 1700-km 2 study area. Den sites generally large, with complex burrow systems possessed a distinctive plant community characterized by grasses forbs, while adjacent areas dominated Dryas, lichens, Carex. Since den are important for reproduction, established should be protected before...

A total of 35 Arctic Foxes (A/opex lagopus) were radio-tracked in the vicinity Prudhoe Bay oil field northern Alaska from October 1979 through May 1980.Dispersal appeared to take place fall and late winter-early spring periods.Most juveniles remained their natal home ranges at least January relatively few individuals participated dispersal.The winter--early dispersal involved a large proportion marked animals may be related breeding activities.Arctic Fox use developed sites associated...