Availability of ground water in the lower Pawcatuck River basin, Rhode Island
Joseph B. Gonthier, Herbert E. Johnston, Glenn T. Malmberg
1974, Water Supply Paper 2033
The lower Pawcatuck River basin in southwestern Rhode Island is an area of about 169 square miles underlain by crystalline bedrock over which lies a relatively thin mantle of glacial till and stratified drift. Stratified drift, consisting dominantly of sand and gravel, occurs in irregularly shaped linear deposits that are...
Effects of stocking density and water exchange rate on growth and survival of channel catfish Ictalurus punctatus (Rafinesque) in circular tanks
Kenneth O. Allen
1974, Aquaculture (4) 29-39
Channel catfish were cultured for 177 days in circular tanks containing 1.6 m3 of water at combinations of five stocking densities (90–720 fish/m3) and five water exchange rates (2.0–0.5 h per exchange). Net yield increased as stocking density increased up to 540 fish/m3 then declined at higher densities. Mean fish weight, feed...
Effect of dietary biotin and lipid on growth, stamina, lipid metabolism and biotin-containing enzymes in brook trout (Salvelinus fontinalis)
H. A. Poston, T.H. McCartney
1974, Journal of Nutrition (104) 315-322
Simultaneous dietary fat and biotin deficiencies in brook trout suppressed weight gain, feed/gain efficiency, swimming stamina, and total liver lipids. Dietary fat alone reduced body water, increased body fat and ash, reversed the elevating effect of biotin plus fat on liver palmitic and stearic acids, and widened the 16:0 to...
Feeding ecology of pintail hens during reproduction
Gary L. Krapu
1974, The Auk (91) 278-290
Food supply has been acknowledged as one of eight major external factors regulating the sexual cycles of birds (Marshall 1961). Several hypotheses have been advanced to explain the role of food supply as an ultimate factor regulating breeding (Marshall 1951; Lack 1954, 1968; Wynne-Edwards 1962; and others). Another potential influence...
Nematode parasites of waterfowl (Anseriformes) from western United States
M.E. McDonald
1974, Wildlife Disease 19-19
Thirty-four species of nematodes were found in 415 Anseriformes (Anatidae) of 27 species; 93.7% of birds over 4 weeks old were infected. Data on prevalence, host specificity, age of host, and geographic distribution are given. Infections were more intense in sick birds and birds in poor physical condition. Accidental or...
Ice on waterfowl markers
R. J. Greenwood, W.C. Bair
1974, Wildlife Society Bulletin (2) 130-134
Wild and captive giant Canada geese (Branta canadensis maxima) and captive mallards (Anas platyrhynchos) accumulated ice on neck collars and/or nasal saddles during winter storm periods in 1971 and 1972. Weather conditions associated with icing were documented, and characteristics of icing are discussed. Severe marker icing occurred during subfreezing weather...
Residues of 2,4-D in pond water, mud, and fish, 1971
D.P. Schultz, P.D. Harman
1974, Pesticides Monitoring Journal (8) 173-179
Abstract has not been submitted...
Effect of temperature on accumulation of methylmercuric chloride and p,p'DDT by rainbow trout (Salmo gairdneri)
Robert E. Reinert, Linda J. Stone, Wayne A. Willford
1974, Journal of the Fisheries Research Board of Canada (31) 1649-1652
Amounts of mercury and DDT residues accumulated from water by yearling rainbow trout (Salmo gairdneri) in the laboratory increased as water temperature increased. Fish exposed to methylmercuric chloride at concentrations of 234–263 parts per trillion for 12 wk at 5, 10, and 15 C accumulated 1.19, 1.71, and 1.96 ppm; fish exposed to p,p′DDT...
Dieldrin and DDT: accumulation from water and food by lake trout (Salvelinus namaycush) in the laboratory
Robert E. Reinert, Linda J. Stone, Harold L. Bergman
1974, Proceedings of the Conference on Great Lakes Research (17) 52-58
In the laboratory we measured the amounts of dieldrin and p,p'DDT accumulated by fish from contaminated water and food to determine how fish from Lake Michigan accumulate high concentrations of these insecticides from an environment where the concentrations in water are generally less than 0.01 ppb. Eight groups of yearling...
Immature insects (Plecoptera, Trichoptera, and Ephemeroptera) collected from deep water in western Lake Superior
James H. Selgeby
1974, Journal of the Fisheries Research Board of Canada (31) 109-111
Five species of aquatic insects - two plecopterans, two trichopterans, and one ephemeropteran - usually found in streams or ponds were collected in water 32-100 m deep in western Lake Superior. All appear to be new records for the lake and all were collected from far greater depths than previously...
Effect of acclimation temperature and heat shock on vulnerability of fry of lake whitefish (Coregonus clupeaformis) to predation
Thomas G. Yocom, Thomas A. Edsall
1974, Journal of the Fisheries Research Board of Canada (31) 1503-1506
Fry of lake whitefish (Coregonus clupeaformis) acclimated to 10, 15, and 18 C were exposed to temperatures of 24.5, 25, and 28 C for 1 min and then immediately returned to water at their acclimation temperature, in test tanks containing yearling yellow perch (Perca flavescens). The number of attacks on the fry and...
Yield of channel catfish and composition of effluents from shallow-water raceways
Dewey L. Tackett
1974, Progressive Fish-Culturist (36) 46-48
No abstract available. ...
Seasonal water potential changes in Sonoran Desert shrubs in relation to topography
William L. Halvorson, Duncan T. Patten
1974, Ecology (55) 173-177
Water potential in Sonoran Desert shrubs was recorded from September 1968 through September 1969. Special attention was paid to recording maximum and minimum potentials on a seasonal basis and diurnal fluctuations during the wettest and driest periods of the year. Franseria deltoidea developed the lowest potential (—85 bar) of the...
Digestive capabilities, gut morphology, and cecal fermentation in wild waterfowl (genus Anas) fed various diets
M. R. Miller
1974, Thesis
No abstract available at this time...
New concepts regarding the production of waterfowl and other game birds in areas of diversified agriculture
H.K. Nelson, Harold F. Duebbert
1974, Book chapter
Many concepts regarding breeding ecology of waterfowl and the influences of environmental factors on annual production have changed in the past 20 years. These influences are especially pronounced in the prairie region of central North America where agriculture becomes more intensive each year. The principal task assigned to this Research...
Potential enviornmental impact of proposed water supply systems in Furnace Creek and Cow Creek, Death Valley National Monument
C. L. Douglas, P.G. Sanchez
1974, Report
No abstract available at this time...
Nitrogen and phosphorus balance of grass carp, Ctenopharyngodon idella, fed elodea, Egeria denea
J.G. Stanley
1974, Transactions of the American Fisheries Society (103) 587-592
The herbivorous grass carp fed winter elodea exhibited a negative nitrogen balance in metabolism, suggesting that food having a higher protein content would be required for normal growth. About a third of the phosphorus contained in food was retained; hence, a combination of aquatic plants and grass carp might afford...
Hydrologic Data for Urban Studies in the Austin, Texas Metropolitan Area, 1972
E.E. Wehmeyer
1974, Report
The purpose of this report is to present rainfall and runoff data for the Waller Creek and Wilbarger Creek study areas for the 1972 water year (October 1, 1971 to September 30, 1972)....
New seismic study begins in Puerto Rico
Arthur C. Tarr
1974, Earthquake Information Bulletin (USGS) (6) 23-26
A new seismological project is now underway in Puerto Rico to provide information needed for accurate assessment of the island's seismic hazard. The project should also help to increase understanding of the tectonics and geologic evolution of the Caribbean region. The Puerto Rico Seismic Program is being conducted by the...
Comparative toxicity of two Iodophors to rainbow trout eggs
Donald F. Amend
1974, Transactions of the American Fisheries Society (103) 73-78
Toxicity of Wescodyne(R) and Betadine(R) to eyed eggs was not adversely affected by water hardness (as calcium and magnesium) or by exposure periods up to 60 min. Both iodophors were much more toxic below pH 6.0 than at pH 8.0. In general Wescodyne was slightly more toxic than Betadine. Significant egg loss...
Effect of nitrogen supersaturated water on coho and chinook salmon
Robert R. Rucker, Paul M. Kangas
1974, Progressive Fish-Culturist (36) 152-156
Porosity, density, grain density, and related physical properties of sediments from the Red Sea drill cores
Frank T. Manheim, Linda Dwight, Rebecca A. Belastock
1974, Initial reports of the Deep Sea Drilling Project (23) 887-907
Representative sediments from each site were chosen for examination of their dry specific gravity and grain density. The determinations were made by micropycnometer; water was used as the displacing medium, and salt corrections were based on the refractive index measurements on interstitial water. For saltier brines the "salinities" derived from...
Stable isotope and lead isotope study of the Cortez, Nevada, gold deposit and surrounding area
R. O. Rye, B. R. Doe, J. D. Wells
1974, Journal of Research of the U.S. Geological Survey (2) 13-23
Isotope studies of sulfur, carbon, hydrogen, oxygen, and lead were carried out to clarify the age and origin of the Cortex gold deposit and the surrounding mineralized area. The hydrogen isotope data indicate that meteoric water was the dominant component of the ore-forming fluids at Cortez. The hydrogen isotope data support geologic evidence for a...
Water resources data for Pennsylvania, water year 1973; Part 1: Surface water records
1974, Water Data Report PA-73-1
No abstract available....
Salinity studies in East Glades Agricultural Area, southeastern Dade County, Florida
J.E. Hull, F.W. Meyer
1973, Open-File Report FL 73-005
Salinity studies in East Glades Agricultural Area, southeastern Dade County, Florida...
