Factors associated with duck nest success in the prairie pothole region of Canada
Raymond J. Greenwood, Alan B. Sargeant, Douglas H. Johnson, Lewis M. Cowardin, Terry L. Shaffer
1995, Wildlife Monographs (128) 3-57
Populations of some dabbling ducks have declined sharply in recent decades and information is needed to understand reasons for this. During 1982-85, we studied duck nesting for 1-4 years in 17 1.6 by 16.0-km, high-density duck areas in the Prairie Pothole Region (PPR) of Canada, 9 in parkland and 8...
Assessment of the virulence of fish and molluscan isolates of infectious pancreatic necrosis virus for salmonid fish by challenge of brook trout, Salvelinus fontinalis (Mitchell)
P. E. McAllister, W. J. Owens
1995, Journal of Fish Diseases (18) 97-103
No abstract available....
Biogeography and status of the striped newt (Notophthalmus perstriatus) in Georgia, USA
C.K. Dodd Jr., L.V. LaClaire
1995, Herpetological Natural History (3) 37-46
Abstract not supplied at this time...
Seasonal abundance and habitat use of selected snakes trapped in xeric and mesic communities of north-central Florida
C.K. Dodd Jr., R. Franz
1995, Bulletin of the Florida Museum of Natural History (38) 43-67
Abstract not supplied at this time...
Diet study of Atlantic sturgeon in marine waters
J. Johnson, D. Dropkin
1995, Conference Paper, Sturgeon Notes
No abstract available at this time...
Brood amalgamation in the Bristle-thighed Curlew Numenius tahitiensis: process and function
Richard B. Lanctot, Robert E. Gill Jr., T. Lee Tibbitts, Colleen M. Handel
1995, Ibis (137) 559-569
Alloparental care in birds generally involves nonbreeding adults that help at nests or breeding adults that help raise young in communal nests. A less often reported form involves the amalgamation of broods, where one or more adults care for young that are not their own. We observed this phenomenon among...
Variation in brood behavior of Black Brant
James S. Sedinger, Michael W. Eichholz, Paul L. Flint
1995, The Condor (97) 107-115
We studied behavior of broods of Black Brant (Branta bernicla nigricans) during five summers between 1987 and 1993, a period in which the local breeding population increased >3-fold. Goslings spent more time foraging than adults of either sex, while adult males spent more time alert and less time foraging than...
Metabolizability and partitioning of energy and protein in green plants by yearling lesser snow geese
James S. Sedinger, Robert G. White, Jerry W. Hupp
1995, The Condor (97) 116-122
We measured apparent metabolizability of organic matter, gross energy, nitrogen and cell wall constituents of pelleted alfalfa by Lesser Snow Geese (Chen caerulescens caerulescens. We also used simultaneous measurements of energy expenditure and apparent metabolizable energy intake to estimate heat increment of feeding and net energy for production and maintenance....
Effects of harness-attached transmitters on premigration and reproduction of Brant
David H. Ward, Paul L. Flint
1995, Journal of Wildlife Management (59) 39-46
Radio transmitters are an important tool in waterfowl ecology studies, but little is known about their effects on free-ranging geese. We attached transmitters to female brant (Branta bernicla nigricans) to investigate migration schedules at a fall staging area, return rates to nesting grounds, and nesting rates of returning females in...
Sediment tests
Christopher G. Ingersoll
1995, Book chapter, Fundamentals of aquatic toxicology: Effects, environmental fate and risk assessment
No abstract available....
Kodiak brown bears
Victor G. Barnes Jr., Roger B. Smith, Mark S. Udevitz, J.R. Bellinger
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Brown bears (Ursus arctos middendorffi) on the Kodiak Archipelago are famous for their large size and seasonal concentrations at salmon streams. Sport hunting of Kodiak bears has been popular since World War II. Their value as captivating subjects to observe or photograph is a more recent development that is increasing...
Flowing recirculated-water system for inducing laboratory spawning of sea lampreys
Kim T. Fredricks, James G. Seelye
1995, Progressive Fish-Culturist (57) 297-301
We describe a water‐recirculating system for inducing spawning of sea lampreys (Petromyzon marinus) held under laboratory conditions. Water temperature in the system was gradually increased to and maintained at 18 ± 2°C, the optimal temperature for spawning. About 10% freshwater was added daily to prevent buildup of waste products. Sea...
Abundance indices for determining the status of lake trout restoration in Michigan waters of Lake Superior
Michael J. Hansen, Richard G. Schorfhaar, James W. Peck, James H. Selgeby, William W. Taylor
1995, North American Journal of Fisheries Management (15) 830-837
Self-sustaining populations of lake trout Salvelinus namaycush have returned to most areas in Lake Superior, but progress toward achieving historic commercial yields has been difficult to measure because of unrecorded losses to predation by sea lamprey Petromyzon marinus and to fisheries. Consequently, we developed restoration targets (catch per effort,...
Locating waterfowl observations on aerial surveys
W.I. Butler, J.I. Hodges, R.A. Stehn
1995, Wildlife Society Bulletin (23) 148-154
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
Water over the bridge
John F. Piatt
1995, American Scientist (83) 396-398
The March-April issue of American Scientist contains a commentary by Julia K. Parrish and P. Dee Boersma (Macroscope, "Muddy Waters") that purports to "assess the validity of the claims made concerning seabird mortality as a result of the [Exxon Valdez oil] spill." Parrish and Boersma would have us believe that...
Movements and distributions of radio-tagged northern squawfish near the Dalles and John Day dams. Annual report 1993
H.C. Hansel, R.S. Shively, G. Holmberg, T.P. King, M. Sheer
1995, Report
No abstract available...
Determination of selection gradients using multiple regression versus Structural Equation Modeling (SEM)
B.H. Pugesek, A. Tomer
1995, Biometrical Journal (37) 449-462
Selection studies involving multiple intercorrelated independent variables have employed multiple regression analysis as a means to estimate and partition natural and sexual selection's direct and indirect effects. These statistical models assume that independent variables are measured without error. Most would conclude that such is not the case in the field...
Impact of flooding on the densities of selected aquatic insects
A.C. Hendricks, L.D. Willis, C. Snyder
1995, Hydrobiologia (299) 241-247
Data from a four-year study of five aquatic insect species,Hydropsyche betteni, H. morosa, H. bronta, Isonychia bicolor, andEphoron leucon, were utilized to evaluate the impact of a 60-year flood and a few lesser floods. The survey began in August, 1984 and was terminated in October, 1987...
Roof-rock contamination of magma along the top of the reservoir for the Bishop Tuff
W. A. Duffield, J. Ruiz, J.D. Webster
1995, Journal of Volcanology and Geothermal Research (69) 187-195
The Bishop Tuff, a Quaternary high-silica rhyolite in east-central California, is widely considered the type example of a vertically and monotonically zoned pyroclastic deposit that represents zoning in the source magma reservoir, inverted during the process of pyroclastic emplacement. However, the deposit of plinian pumice, which forms the base of...
The role of palynology in paleoecological analyses of Tertiary coals
D. J. Nichols
1995, International Journal of Coal Geology (28) 139-159
Pollen, spores, and other plant microfossils are important constituents of Tertiary coals, both as petrographic components (the maceral sporinite) and as distinctive indicators of the nature of the depositional environment in which the coal-forming peat accumulated. Palynological analyses, which have been...
Pb2+ and Zn2+ adsorption by a natural aluminum- and iron-bearing surface coating on an aquifer sand
J.A. Coston, C. C. Fuller, J.A. Davis
1995, Geochimica et Cosmochimica Acta (59) 3535-3547
Pb2+ and Zn2+ adsorption was studied in batch experiments with material collected from a shallow, unconfined aquifer of glacial outwash sand and gravel in Falmouth, Massachusetts, USA. The aquifer solids contain primarily quartz (95% w/w), with minor amounts of alkali feldspars and ferromagnetic minerals. Pb2+ and...
Survival rates of radio-collared female polar bears and their dependent young
Steven C. Amstrup, George M. Durner
1995, Canadian Journal of Zoology (73) 1312-1322
Polar bears are hunted throughout most of their range. In addition to hunting, polar bears of the Beaufort Sea region are exposed to mineral and hydrocarbon extraction and related human activities such as shipping, road building, and seismic testing. As human...
Scour measurements at bridge sites during 1993 Upper Mississippi River Basin flood
David S. Mueller, Mark N. Landers, Edward E. Fischer
1995, Transportation Research Record 47-55
The record flood on the upper Mississippi River basin during the summer of 1993 provided a rare opportunity for collection of data on streambed scour at bridges and for testing of scour data collection equipment under extreme hydraulic conditions. Real-time scour measurements at bridges are categorized into one of three...
How much velocity information is necessary to predict sediment suspension in the surf zone?
Bruce E. Jaffe, David M. Rubin, Asbury Sallenger Jr.
1995, Conference Paper, Proceedings of the Coastal Engineering Conference
Instantaneous horizontal water velocity, or velocity to a power, does not contain enough information to predict suspension in the surf zone. Unlike steady uniform flow, more one than one velocity is necessary to parameterize pick-up and mixing of sediment into the water column. Using a velocity history improves predictions of...
Techniques of contributing-area delineation for analysis of nonpoint-source contamination of Long Island, New York
P. Misut
1995, Models for assessing and monitoring groundwater quality. Proc. symposium, Boulder, 1995 (227) 31-37
Ninety shallow monitoring wells on Long Island, N.Y., were used to test the hypothesis that the correlation between the detection of volatile organic compounds (VOC's) at a well and explanatory variables representing land use, population density, and hydrogeologic conditions around the well is affected by the size and shape of...
