F.T. Van Manen, M.R. Pelton
1997, Journal of Forestry (95) 6-12
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateBrenda E. Ballachey, Kimberly A. Kloecker
1997, Report MMS 6-3
No abstract available....
F.T. Barrows, W.A. Lellis
1997, Bozeman Information Leaflet 86
No abstract available at this time...
M. G. Knutson, R. K. Hines, C.M. Sveum, C. E. Korschgen
1997, Report
Abstract not submitted to date...
Robert B. O’Sullivan
1997, Conference Paper, Mesozoic geology and paleontology of the Four Corners Region: New Mexico Geological Society, Forty-eighth Annual Field Conference, October 1-4, 1997
In McElmo Canyon, Jurassic rocks are 1500-1600 ft thick. Lower Jurassic rocks of the Glen Canyon Group include (in ascending order) Wingate Sandstone, Kayenta Formation and Navajo Sandstone. Middle Jurassic rocks are represented by the San Rafael Group, which includes the Entrada Sandstone and overlying Wanakah Formation. Upper Jurassic rocks...
A.K. Miles, M.W. Tome
1997, Environmental Pollution (95) 75-84
This study examined the potential for exposure of migratory aquatic birds to contaminants in highly industrialized habitats at Baltimore Harbor, Maryland. Seven nearshore, benthic sites were sampled every 3 or 6 months from June 1987 to December 1988. Twenty metallic elements were measured in composites (i.e. annelids, amphipods, and isopods...
A.O. Bush, K. D. Lafferty, J.M. Font, A.W. Shostak
1997, Journal of Parasitology (83) 575-583
We consider 27 population and community terms used frequently by parasitologists when describing the ecology of parasites. We provide suggestions for various terms in an attempt to foster consistent use and to make terms used in parasite ecology easier to interpret for those who study free-living organisms. We suggest strongly...
M. Wells, S. Hathaway, M. Simovich
1997, Hydrobiologia (359) 199-202
No abstract available....
D.K. Garcelon, N. J. Thomas
1997, Journal of Wildlife Diseases (33) 299-303
A 12-year-old female bald eagle (Haliaeetus leucocephalus) was found in May 1993 on Santa Catalina Island, California (USA), in a debilitated condition, exhibiting ataxia and tremors; it died within hours. On necropsy, the bird was emaciated but had no evidence of disease or...
J. A. Coe, P.A. Glancy, J.W. Whitney
1997, Geomorphology (20) 11-28
On July 21 or 22, 1984, debris flows triggered by rainfall occurred on the southern hillslope of Jake Ridge, about 6 km east of the crest of Yucca Mountain, Nevada. Rain gages near Jake Ridge recorded 65 mm and 69 mm...
James P. Bennett, C. M. Wetmore
1997, Environmental and Experimental Botany (37) 173-185
A three factor transect study was conducted to test the hypothesis that chemical elements from air emissions in the vicinity of International Falls, Minnesota could not be detected in lichens along a 24 km transect reaching into Voyageurs National Park. It was hypothesized that element concentrations in lichens would decline...
E.C. Theriot, S.C. Fritz, Robert E. Gresswell
1997, Arctic and Alpine Research (29) 304-314
Long-term limnological data from the four largest lakes in Yellowstone National Park (Yellowstone, Lewis, Shoshone, Heart) are used to characterize their limnology and patterns of temporal and spatial variability. Heart Lake has distinctively high concentrations of dissolved materials, apparently reflecting high thermal inputs. Shoshone and Lewis lakes have the highest...
Louise M. Weber, Susan M. Haig
1997, Journal of Field Ornithology (68) 358-366
Coastal wetlands that are diked and managed may supplement declining natural habitat for migrating shorebirds (Charadriiformes). However, data on shorebird diet in these diked wetlands are scarce. We examined shorebird diet and prey size selection in brackish diked wetlands at the Yawkey Center on South Island, South Carolina, USA. Gut...
D.J. Mattson
1997, Biological Conservation (81) 161-177
Previous results of fecal analysis from the Yellowstone area and the known abilities of grizzly bears Ursus arctos to acquire and digest tissue from vertebrates suggested that grizzlies in this ecosystem obtained substantial energy from ungulates. This issue was addressed using observations from radio-marked grizzly bears, 1977–1992. Ungulates potentially contributed the majority...
D.J. Mattson
1997, Journal of Mammalogy (78) 228-238
Roots of the biscuitroot (Lomatium cous) are a common food of grizzly bears (Ursus arctos horribilis) in drier parts of their southern range. I used random sampling and locations of radiomarked bears in the Yellowstone ecosystem to investigate the importance of mass and starch content of roots, digability of...
T. B. Graham, B.B. Chomel
1997, Emerging Infectious Diseases (3) 367-370
Hantavirus pulmonary syndrome, first documented in 1993, is caused by Sin Nombre virus (SNV), which is carried by the Peromyscus species. In 1994, high SNV antibody prevalence was identified in deer mice from two California Channel Islands. We sampled two locations on three islands to estimate mouse population density and...
J.R. Reinfelder, W.-X. Wang, S. N. Luoma, N.S. Fisher
1997, Marine Biology (129) 443-452
Assimilation efficiencies (AEs) and physiological turnover-rate constants (k) of six trace elements (Ag, Am, Cd, Co, Se, Zn) in four marine bivalves (Crassostrea virginica Gmelin,Macoma balthica Linnaeus, Mercenaria mercenaria Linnaeus, and Mytilus edulis Linnaeus) were measured in radiotracer-depuration experiments. Egestion rates of unassimilated elements were highest...
D.R. Cayan, D. H. Peterson, L. Riddle, M. D. Dettinger, R. E. Smith
1997, Interagency Ecological Program Newsletter 25-28
A spring runoff pulse is identified in the Merced River record from the Sierra Nevada, that makes the transition from low streamflow conditions in winter to the high streamflow conditions in the later spring-early summer period. The timing of the pulse is delayed with greater seasonal accumulation of snow pack...
Sharon S. Crowley, Peter D. Warwick, Leslie F. Ruppert, James Pontolillo
1997, International Journal of Coal Geology (34) 327-343
The origin and distribution of twelve potentially Hazardous Air Pollutants (HAPs; As, Be, Cd, Cr, Co, Hg, Mn, Ni, Pb, Sb, Se, and U) identified in the 1990 Clean Air Act Amendments were examined in relation to the maceral composition of the A1 bed (Paleocene, Calvert Bluff Formation, Wilcox Group)...
M. Loreau, D.L. DeAngelis
1997, Theoretical Population Biology (51) 79-93
We investigate the potential for coexistence of species that compete for a shared resource when the resource occurs in both a source area acting as a refuge and a sink area where it is used by the competing species. Our model shows that the mixing rate between the source and...
Hannah M. Hamilton, Jayne Brim-Box, Robert M. Dorazio
1997, Regulated Rivers: Research & Management (13) 537-541
Freshwater mussels are often relocated from existing beds for both conservation and management reasons. In this study, we empirically tested whether the habitat type at the destination site was important in predicting the success of mussel relocation. In 1993, four species of freshwater mussels were relocated in the Apalachicola River...
W. A. Cobban, W. J. Kennedy, G. R. Scott
1997, Geobios (30) 225-230
Didymoceras puebloense nov. sp. is described from the upper Campanian zones of Didymoceras nebrascense and Didymoceras stevensoni in Pueblo and Pitkin Counties, Colorado, and Weston County, Wyoming in the United States Western Interior. The species is characterized by a middle helical growth stage in which the succesive whorls are widely separated followed by a...
C.K. Dodd Jr.
1997, Chelonian Conservation and Biology (2) 370-377
Abstract not supplied at this time...
Linda A. Deegan, B. J. Peterson, H. Golden, C.C. McIvor, M.C. Miller
1997, Canadian Journal of Fisheries and Aquatic Sciences (54) 269-283
This study examined the relative importance of bottom-up and top-down controls of an arctic stream food web by simultaneous manipulation of the top predator and nutrient availability. We created a two-step trophic system (algae to insects) by removal of the top predator (Arctic grayling, Thymallus arcticus) in fertilized and control...
D.L. DeAngelis, W.F. Loftus, J.C. Trexler, Robert E. Ulanowicz
1997, Journal of Aquatic Ecosystem Stress and Recovery (1) 1-13
Many wetlands undergo seasonal cycles in precipitation and water depth. This environmental seasonality is echoed in patterns of production of fish biomass, which, in turn, influence the phenology of other components of the food web, including wading birds. Human activities, such as drainage or other alterations of the hydrology, can...