Population dynamics of Yellowstone grizzly bears
Richard R. Knight, L.L. Eberhardt
1985, Ecology (66) 323-334
Data on the population of grizzly bears in the environs of Yellowstone National Park suggest that the population has not recovered from the reductions following closure of garbage dumps in 1970 and 1971, and may continue to decline. A computer simulation model indicates that the risk of extirpation over the...
Storm-induced response of a nearshore-bar system
Asbury H Sallenger Jr., Robert A. Holman, W.A. Birkemeier
1985, Marine Geology (64) 237-257
A nearshore-bar system was surveyed periodically through a storm and the following recovery period. The data showed a very rapid response of morphology to changing wave conditions and allowed various models on bar formation to be tested.Under low-energy conditions prior to the storm a small bar was surveyed 13 m...
Density-production characteristics of box-nesting wood ducks in a northern greentree impoundment
G.M. Haramis, D.Q. Thompson
1985, Journal of Wildlife Management (49) 429-436
Nesting wood ducks (Aix sponsa) were studied for 7 years (1973-79) following placement of nest boxes within a 250-ha experimental greentree impoundment located at the Montezuma National Wildlife Refuge in central New York. Wood ducks filled available nesting space in the 3rd year of the study. As nesting space became...
Cryogenic preservation of semen from the greater sandhill crane
George F. Gee, Murray R. Bakst, Thomas J. Sexton
1985, Journal of Wildlife Management (49) 480-484
No abstract available. ...
Recent Red-shouldered Hawk range expansion north into Oregon including first specimen record
Charles J. Henny, John E. Cornely
1985, Murrelet (66) 29-31
In this paper we review 46 Red-shouldered Hawk (Buteo lineatus) observation records from Oregon between 1971 and 1983. The literature contained only two records prior to 1971: Johnson's (1880) record without a specific date or locality from the Willamette Valley of western Oregon, and Bendire's (1892) two nests located...
Effects of copper on production of periphyton, nitrogen fixation and processing of leaf litter in a Sierra Nevada, California, stream
Harry V. Leland, James L. Carter
1985, Freshwater Biology (15) 155-173
1Production of periphyton, nitrogen fixation and processing of leaf litter were examined in an oligotrophic Sierra Nevada stream and the responses of these processes to copper (2.5, 5 and 10μg 1-1 CuT [total filtrable copper]; approximately 12, 25 and 50 ng 1-1 Cu2+) were determined.2Autotrophic and...
An aerial photographic census of Chesapeake Bay and North Carolina canvasbacks
G.M. Haramis, J.R. Goldsberry, D.G. McAuley, E.L. Derleth
1985, Journal of Wildlife Management (49) 449-454
We used conventional 35-mm photography to conduct an aerial photographic census of canvasbacks (Aythya valisineria) throughout Chesapeake Bay (tidal Maryland and Virginia) and coastal North Carolina, 26-30 January 1981. Flock size and sex ratio characteristics were determined from examination of color transparencies of 165 canvasback flocks totaling over 95,000 birds....
The aqueous photolysis of ethylene glycol adsorbed on geothite
Kirkwood M. Cunningham, Marvin C. Goldberg, E.R. Weiner
1985, Photochemistry and Photobiology (41) 409-416
Suspensions of goethite (α-FeOOH) were photolyzed in aerated ethylene glycol-water solutions at pH 6.5, with ultraviolet light in the wavelength range300–400 nm. Under these conditions, formaldehyde and glycolaldehyde were detected as photoproducts. Quantum yields of formaldehyde production ranged from 1.9 7times; 10-5 to 2.9 × 10-4 over the ethylene...
Evaluation of marked-recapture for estimating striped skunk abundance
Raymond J. Greenwood, Alan B. Sargeant, Douglas H. Johnson
1985, Journal of Wildlife Management (49) 332-340
The mark-recapture method for estimating striped skunk (Mephitis mephitis) abundance was evaluated by systematically livetrapping a radio-equipped population on a 31.4-km2 study area in North Dakota during late April of 1977 and 1978. The study population was 10 females and 13 males in 1977 and 20 females and 8 males...
Selected environmental decisionmaking processes related to developments in the Gulf of Mexico region
James B. Johnston
1985, Conference Paper, Proceedings of the workshop on strategic planning for the coastal marine environment
No abstract available....
Miocene diatoms from the Hawthorn Formation, Thomas County, Georgia
George William Andrews, William H. Abbott
1985, Bulletins of American Paleontology (87) 53-109
No abstract available....
GLORIA II sonograph mosaic of the western U.S. Exclusive Economic Zone
D.A. Cacchione, D.E. Drake, B. Edwards, M. Field, J. Gardner, M. Hampton, H. Karl, David S. McCulloch, Neil H. Kenyon, D. Masson
1985, Eos, Transactions, American Geophysical Union (66) 553-555
In 1983 the United States declared sovereign rights and jurisdiction over living and nonliving resources in an area extending 200 nautical miles (370 km) seaward from its shores. In response to the establishment of this Exclusive Economic Zone (EEZ), the U.S. Geological Survey (USGS) has implemented a program, called EEZ‐Scan,...
Stomatal mechanism as the basis of evolution of crassulacean acid metabolism
Jon E. Keeley, C.B. Osmond, J.A. Raven
1985, Nature (314) 200-200
No abstract available....
Uranium-series dating of sediments from Searles Lake: Differences between continental and marine climate records
James L. Bischoff, Robert J. Rosenbauer, George I. Smith
1985, Science (227) 1222-1224
One of the major unresolved questions in Pleistocene paleoclimatology has been whether continental climatic transitions are consistent with the glacial δ18O marine record. Searles Lake in California, now a dry salt pan, is underlain by sediment layers deposited in a succession of lakes whose levels and salinities have fluctuated in...
A constitutive equation for mass-movement behavior
Richard M. Iverson
1985, Journal of Geology (93) 143-160
A phenomenological constitutive equation can serve as a basis for modeling and classifying mass-movement processes. The equation is derived using the principles of continuum mechanics and several simplifying assumptions about mass-movement behavior. These assumptions represent idealizations of field behavior, but they appear...
Effects of flood control alternatives on fish and wildlife resources of the Malheur-Harney lakes basin
David B. Hamilton, Gregor T. Auble, Richard A. Ellison, James E. Roelle
1985, Report
Malheur Lake is the largest freshwater marsh in the western contiguous United States and is one of the main management units of the Malheur National Wildlife Refuge in southeastern Oregon. The marsh provides excellent waterfowl production habitat as well as vital migration habitats for birds in the Pacific flyway. Water...
Metals in riparian wildlife of the lead mining district of southeastern Missouri
K. R. Niethammer, Richard D. Atkinson, Thomas S. Baskett, Fred B. Samson
1985, Archives of Environmental Contamination and Toxicology (14) 213-223
Five species of riparian vertebrates (425 individuals) primarily representing upper trophic levels were collected from the Big River and Black River drainages in two lead mining districts of southeastern Missouri, 1981–82. Big River is subject to metal pollution via erosion and seepage from large tailings piles from inactive lead mines....
Remote sensing of lunar pyroclastic mantling deposits
Lisa R. Gaddis, Carle M. Pieters, B. Ray Hawke
1985, Icarus (61) 461-489
Mantling deposits on the Moon are considered to be pyroclastic units emplaced on the lunar surface as a result of explosive fire fountaining. These pyroclastic units are characterized as having low albedos, having smooth fine-textured surfaces, and consisting in part of homogeneous, Febearing volcanic glass and partially crystallized spheres. Mantling...
Effects of flow alterations on trout, angling, and recreation in the Chattahoochee River between Buford Dam and Peachtree Creek
John M. Nestler, Robert T. Milhouse, Jay Troxel, Janet A. Fritschen
1985, Report
In 1974 county governments in the Atlanta vicinity realized that demands on the Chattahoochee River for water supply plus the streamflow required for water quality nearly equaled the minimum flow in the river. Increased demands for water supply in the following years could not be supplied under the then existing...
Sorption of lead onto two gram-negative marine bacteria in seawater
Ronald W. Harvey, James O. Leckie
1985, Marine Chemistry (15) 333-344
Laboratory adsorption experiments performed at environmentally significant lead (Pb) and cell concentrations indicate that the marine bacteria examined have significant binding capacities for Pb. However, the behavior governing Pb sorption onto gram-negative bacteria in seawater may be quite complex. The sorption kinetics appear to involve two distinct phases, i.e., a...
Use of otoliths to determine age and growth of largemouth bass in Florida
M.V. Hoyer, J.V. Shireman, M.J. Maceina
1985, Transactions of the American Fisheries Society (114) 307-309
The annual formation of otolith annuli was validated through age 5 for Florida largemouth bass Micropterus salmoides floridanus. Sectioned otoliths (sagittae) gave more reliable ages than whole otoliths. Beginning at age 2, at least one annulus was obscure in some whole‐otolith mounts, a problem that worsened with fish age. By...
Late Pleistocene—Holocene geology of the central Virgin Island Platform
Charles W. Holmes, Jack L. Kindinger
1985, Marine Geology (64) 41-64
Geophysical and sedimentological data collected on the central Virgin Islands insular shelf provide a unique opportunity to investigate carbonate shelf processes in an active tectonic environment. Although complicated by fluctuating sea level during the Quaternary, the sedimentological regimes have been controlled by the tectonic fragmentation of the region. South of...
Mid-Atlantic Ridge coccolith and silicoflagellate biostratigraphy, Deep Sea Drilling Project Sites 558 and 563.
David Bukry
1985, Initial Reports of the D.S.D.P. (82) 591-603
Low-latitude coccolith zonation can be used for biostratigraphy at Mid-Atlantic Ridge sites DSDP 558 (lat. 38°N) and DSDP 563 (lat. 34°N). The low-latitude zonal sequence from lower Oligocene to Holocene is interrupted by coolwater assemblages in upper middle Miocene and by hiatuses that removed the lower Pliocene and part of...
Tropical Pacific silicoflagellate zonation and paleotemperature trends of the late Cenozoic
David Bukry
1985, Initial Reports of the D.S.D.P. (85) 477-497
Quantitative study of late Cenozoic silicoflagellates at tropical Pacific DSDP Sites 572 and 575 shows that the greatest amplitude of fluctuation in relative paleotemperature values occurred in the late Miocene. The coolest minimum paleotemperature values (near 75 = 30) also occurred in the late Miocene. The warmest intervals (Ts =...
Comment on “Possible Effects of Erosional Changes of the Topographic Relief on Pore Pressures at Depth” by J. Tóth and R. F. Millar
Christopher E. Neuzil
1985, Water Resources Research (21) 895-898
No abstract available....
