Selection of summer roosting sites by Indiana bats (Myotis sodalis) in Missouri
E.V. Callahan, R.D. Drobney, R.L. Clawson
1997, Journal of Mammalogy (78) 818-825
Summer roosting sites were studied at four maternity colonies of Indiana bats (Myotis sodalis) in northern Missouri. Colonies of Indiana bats used two types of roosts, primary and alternate, that differed in intensity of use, number, and probable function. Primary roosts were denned as roosts where use by >30 bats...
Preparation, cryopreservation, and growth of cells prepared from the green turtle (Chelonia mydas)
Melody K. Moore, Thierry M. Work, George H. Balazs, Douglas E. Docherty
1997, Methods in Cell Science (19) 161-168
Techniques are described for preparing, preserving, and growing cell cultures from 30 to 40-day old green turtle embryos (2.0-3.0 cm length) including cells derived from skeletal muscle, liver, heart, kidney, eye, lung, and brain. Acceptable growth of all cells occurred in all standard cell culture media tested, with optimum growth...
Cretaceous anuran and dinosaur footprints from the Patuxent Formation of Virginia
R.E. Weems, J.M. Bachman
1997, Proceedings of the Biological Society of Washington (110) 1-17
Footprints of an anuran (gen. et sp. indet.), a theropod dinosaur (Megalosauropus sp.), and an ornithopod dinosaur (Amblydactylus sp.) have been recovered from the Lower Cretaceous Patuxent Formation in Stafford County, Virginia. These footprints are the first record of terrestrial vertebrates from Cretaceous strata in Virginia, and their discovery suggests...
Geology, thermal maturation, and source rock geochemistry in a volcanic covered basin: San Juan sag, south-central Colorado
R. R. Gries, J.L. Clayton, C. Leonard
1997, American Association of Petroleum Geologists Bulletin (81) 1133-1160
The San Juan sag, concealed by the vast San Juan volcanic field of south-central Colorado, has only recently benefited from oil and gas wildcat drilling and evaluations. Sound geochemical analyses and maturation modeling are essential elements for successful exploration and development. Oil has been produced in minor quantities from an...
Geochemical mole-balance modeling with uncertain data
David L. Parkhurst
1997, Water Resources Research (33) 1957-1970
Geochemical mole-balance models are sets of chemical reactions that quantitatively account for changes in the chemical and isotopic composition of water along a flow path. A revised mole-balance formulation that includes an uncertainty term for each chemical and isotopic datum is derived. The revised formulation is comprised of mole-balance equations...
Fault-related folding during extension: Plunging basement-cored folds in the Basin and Range
K. A. Howard, Barbara E. John
1997, Geology (25) 223-226
Folds are able to form in highly extended areas where stratified cover rocks respond to basement fault offsets. The response of cover rocks to basement faulting can be studied especially well in plunging structures that expose large structural relief. The southern Basin and...
The International Geosphere Biosphere Programme Data and Information System global land cover data set (DISCover)
Thomas R. Loveland, A.S. Belward
1997, Acta Astronautica (41) 681-689
The International Geosphere Biosphere Programme Data and Information System (IGBP-DIS), through the mapping expertise of the U.S. Geological Survey and the European Commission's Joint Research Centre, recently guided the completion of a 1-km resolution global land cover data set from advanced very high resolution radiometer (AVHRR) data. The 1-km resolution...
Changes in gill morphology of Atlantic salmon (Salmo salar) smolts due to addition of acid and aluminum to stream water
C. H. Jagoe, T.A. Haines
1997, Environmental Pollution (97) 137-146
One-year-old Atlantic salmon smolts were held in three artificial channels adjacent to a softwater (mean sp. cond. 30 μS cm−1, circumneutral stream. Water in one channel was untreated (mean pH 6.25); the others received additions of acid (to mean pH 5.6), or acid plus aluminum (to mean pH 5.5; mean...
Assessment of liquefaction potential during earthquakes by Arias intensity
R. E. Kayen, J. K. Mitchell
1997, Journal of Geotechnical and Geoenvironmental Engineering (123) 1162-1174
An Arias intensity approach to assess the liquefaction potential of soil deposits during earthquakes is proposed, using an energy-based measure of the severity of earthquake-shaking recorded on seismograms of the two horizontal components of ground motion. Values representing the severity of strong motion at depth in the soil column are...
The IGBP-DIS global 1 km land cover data set, DISCover: First results
Thomas R. Loveland, A.S. Belward
1997, International Journal of Remote Sensing (18) 3289-3295
The International Geosphere-Biosphere Programme Data and Information System (IGBP-DIS) is co-ordinating the development of global land data sets from Advanced Very High Resolution Radiometer (AVHRR) data. The first is a 1 km spatial resolution land cover product 'DISCover', based on monthly Normalized Difference Vegetation Index composites from 1992 and 1993....
Groundwater record of halocarbon transport by the Danube River
J.K. Böhlke, K. Revesz, E. Busenberg, J. Deak, E. Deseo, M. Stute
1997, Environmental Science & Technology (31) 3293-3299
Groundwater dating studies have supported the concept that aquifers with low coefficients of dispersion may contain coherent records of past conditions in recharge areas. Groundwater records can provide unique information about natural or anthropogenic changes in the atmosphere and hydrosphere where long-term monitoring data are not available. Here we describe...
Epidermal tumors of rainbow smelt with associated virus
R. L. Herman, C.N. Burke, S. Perry
1997, Journal of Wildlife Diseases (33) 925-929
Epithelial tumors of the skin occurred in landlocked populations of rainbow smelt (Osmerus mordax) in several lakes in New Hampshire (USA) during the spawning runs. Histologically, these were noninvasive epithelial cell lesions. Herpesvirus-like particles could be seen in the nucleus and cytoplasm. The...
Nesting season food habits of 4 species of herons and egrets at Lake Okeechobee, Florida
Jeff P. Smith
1997, Colonial Waterbirds (20) 198-220
Based on the composition of nestling regurgitations collected during 3 breeding seasons, fish were the most important prey group for Great Egrets (Ardea alba: N = 200 nest-day samples; aggregate percent biomass [APB] = 73.4%), Snowy Egrets (Egretta thula: N = 115; APB = 91.4%), and Tricolored Herons (E. tricolor:...
Assessment of smolt condition for travel time analysis. Draft summary report 1987-1997
R. M. Schrock, J.W. Beeman, P.V. Haner, K. Hans, J. Hotchkiss, S. Sauter, S. Vanderkooi, A.G. Maule
1997, Report
No abstract available ...
Effects of ambient water quality on the endangered Lost River sucker (Deltistes luxatus) in Upper Klamath Lake, Oregon
B.A. Martin
1997, Thesis
No abstract available ...
An energy-circuit population model for great egrets (Ardea alba) at Lake Okeechobee, Florida, U.S.A
Jeff P. Smith
1997, Ecological Modelling (97) 1-21
I simulated the annual population cycles of Great Egrets (Ardea alba) at Lake Okeechobee, Florida, to provide a framework for evaluating the local population dynamics of nesting and foraging wading birds. The external forcing functions were solar energy, minimum air temperature, water depth, surface-water drying rate, and season. Solar input...
Rana aurora draytonii (California red-legged frog). Behavior
G. B. Rathbun, N.J. Scott Jr., T.G. Murphey
1997, Herpetological Review (28) 85-86
Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California. Third annual progress report, 1997
B.E. Kus, P.P. Beck
1997, Report
No abstract available at this time...
Canada Stream: A glacial meltwater stream in Taylor Valley, South Victoria Land, Antarctica
Diane M. McKnight, C. M. Tate
1997, Journal of the North American Benthological Society (16) 14-17
No abstract available....
Quarterly Wildlife Mortality Report
K. A. Converse, T. Creekmore
1997, Supplement to the Journal of Wildlife Diseases (33)
Collection and analysis of traditional ecological knowledge about a population of arctic tundra caribou
Michael A.D. Ferguson, Francois Messier
1997, Arctic (50) 17-28
Aboriginal peoples want their ecological knowledge used in the management of wildlife populations. To accomplish this, management agencies will need regional summaries of aboriginal knowledge about long-term changes in the distribution and abundance of wildlife populations and ecological factors that influence those changes. Between 1983 and 1994, we developed a...
Burrowing saves Lake Erie clams
S. Jerrine Nichols, Douglas A. Wilcox
1997, Nature (389) 921
Freshwater unionid clams in North America have been virtually eliminated from waters that are colonized by zebra mussels. Near total mortality has been reported in western Lake Erie, but we have discovered a large population of native clams in a Lake Erie wetland that shows little sign of infestation....
Efficacy of candidate chemicals for preventing attachment of zebra mussels (Dreissena polymorpha)
W.G. Cope, M.R. Bartsch, L. L. Marking
1997, Environmental Toxicology and Chemistry (16) 1930-1934
Forty-seven chemicals having potential for preventing the attachment of zebra mussels Dreissena polymorpha were identified and tested. For each chemical, 15 zebra mussels (5–8-mm shell length) in each of two replicates and six treatments were exposed for 48 h followed by a 48-h postexposure period in untreated water. Eleven of the chemicals...
Declines in abundance and species richness of birds following a major flood on the upper Mississippi River
M. G. Knutson, Erwin E. Klaas
1997, The Auk (114) 367-380
We examined the abundance and species richness of birds breeding in floodplain forests of the Upper Mississippi River from 1992 to 1994 to identify effects of a major flood in 1993 on the bird assemblage. Sixty-five study plots were divided into treatments and controls based on whether they were flooded...
Combined-sewer overflow data and methods of sample collection for selected sites, Detroit, Michigan
M.J. Sweat, J.R. Wolf
1997, Open-File Report 96-646
The discharge of untreated sewage is illegal in Michigan unless permitted under Act 245 due to public health concerns. In October, 1992, the Michigan Department of Natural Resources (MDNR, now the Michigan Department of Environmental Quality) issued a discharge permit to Detroit authorizing discharge from the City's 78 combined-sewer overflows...
