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Page 4865, results 121601 - 121625

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Activity of radio-tagged black-footed ferrets
Dean E. Biggins, Max H. Shroeder, Steven C. Forrest, Louise Richardson
1986, Great Basin Naturalist Memoirs (8) 135-140
Activity of two radio-tagged black-footed ferrets (Mustela nigripes) was investigated during October-November 1981 (an adult male monitored for 16 days), and during August-November 1982 (a young female monitored for 101 days). Aboveground activity of the male averaged 2.95 hr/night, 15% of the total time monitored. From 22 September to 5...
Denning of grizzly bears in the Yellowstone National Park area
Steven L. Judd, Richard R. Knight, Bonnie M. Blanchard
1986, Bears: Their Biology and Management (6) 111-117
Radiotelemetry was used to locate 101 grizzly bear (Ursus arctos) dens from 1975 to 1980; 35 dens were examined on the ground. Pregnant females denned in late October, and most other bears denned by mid-November. Duration of denning average 113, 132, and 170 days for males, females, and...
Origin of the Mariano Lake uranium deposit, McKinley County, New Mexico
Neil S. Fishman, Richard L. Reynolds
1986, Book chapter, A basin analysis case study: The Morrison Formation, Grants Uranium Region, New Mexico
The Mariano Lake uranium deposit, hosted by the Brushy Basin Member of the Jurassic Morrison Formation, occurs in the Smith Lake district of the Grants uranium region, New Mexico. The orebody, contains abundant amorphous organic material, which suggests that it represents a primary-type deposit; however, the orebody is...
Iron-titanium oxide minerals and magnetic susceptibility anomalies in the Mariano Lake-Lake Valley cores-Constraints on conditions of uranium mineralization in the Morrison Formation, San Juan Basin, New Mexico
Richard L. Reynolds, Neil S. Fishman, James H. Scott, Mark R. Hudson
1986, Book chapter, A basin analysis case study: The Morrison Formation, Grants Uranium Region, New Mexico
Petrographic study of the Mariano Lake-Lake Valley cores reveals three distinct zones of postdepositional alteration of detrital Fe-Ti (iron-titanium) oxide minerals in the Westwater Canyon Member of the Upper Jurassic Morrison Formation. In the uranium-bearing and adjacent portions of the Westwater Canyon, these detrital Fe-Ti oxide minerals have been thoroughly...
Cholinesterase activity in black-crowned night-herons exposed to fenthion-treated water
Gregory J. Smith, James W. Spann, Elwood F. Hill
1986, Archives of Environmental Contamination and Toxicology (15) 83-86
Fenthion, (0,0-Dimethyl0-[3-methyl-4-(methylthio)phenyl] phosphorothioate), a widely used mosquito control agent, has caused wildlife mortality. To simulate a shallow wetland environment, an exposure chamber was used containing water treated with fenthion at 1 and 10 times the field application rate of 112 g active ingredient (AI)/ ha. This system permitted an evaluation...
Vegetation and soil recovery in wilderness campsites closed to visitor use
Thomas J. Stohlgren, David J. Parsons
1986, Environmental Management (10) 375-380
Recreational use of wilderness results in impacts to vegetation and soil in trails and campsites. Traditionally, campsite impact studies have compared campsites receiving various levels of use with unused control areas. Field studies in Sequoia National Park, California, indicate that the degree of impact to vegetation and soils also varies...