Morphology of glochidia of Lampsilis higginsi (Bivalvia: Unionidae) compared with three related species
D. L. Waller, L. E. Holland Bartels, L. G. Mitchell
1988, American Malacological Bulletin (6) 39-43
Glochidia of the endangered unionid mussel Lampsilis higginsi (Lea) are morphologically similar to those of several other species in the upper Mississippi River. Life history details, such as the timing of reproduction and identity of host fish, can be readily studied if the glochidia of L. higginsi...
Variations in abundance of young-of-the-year channel catfish in a navigation pool of the upper Mississippi River
L. E. Holland Bartels, M.C. Duval
1988, Transactions of the American Fisheries Society (117) 202-208
Spatial and temporal variations in the abundance of young-of-the-year channel catfish Ictalurus punctatus were determined over 3 years based on 154 trawls taken from Navigation Pool 7 of the upper Mississippi River. No significant spatial patterns in abundance or length of fish in the catch were found...
A double survey estimate for sighting probability of sea otters in California
James A. Estes, Ronald J. Jameson
1988, Journal of Wildlife Management (52) 70-76
We developed an estimator for the probability of sighting sea otters (Enhydra lutris) by shore- based counters, based on simultaneous double-surveys. We then estimated probability of sighting sea otters in California and evaluated the estimator's principal assumptions. The overall probability of sighting sea otters on 5 replicated double-surveys at each...
Fish hosts for glochidia of the endangered freshwater mussel Lampsilis higginsi Lea (Bivalvia: Unionidae)
D. L. Waller, L. E. Holland Bartels
1988, Malacological Review (21) 119-122
Laboratory tests of nine species of fish as hosts for glochidia of Lampsilis higginsi Lea indicated that four species were fully suitable: largemouth bass (Micropterus salmoides Lacepede), smallmouth bass (M. dolomieui Lacepede), walleye (Stizostedion vitreum vitreum Mitchill), and yellow perch (Perca flavescens Mitchill)....
Toxicity of six heterocyclic nitrogen compounds to Daphnia pulex
Cynthia M. Perry, Stephen B. Smith
1988, Bulletin of Environmental Contamination and Toxicology (41) 604-608
We determined the relative toxicities to the aquatic crustacean Daphniz pulex of six heterocyclic nitrogen compunds. These compounds were selected because they were detected in lake trout or walleyes and were commercially available. Stress to the daphnid populations may affect forage fish populations that depend either directly or...
A bioassay for production capacity assessment
J. W. Meade
1988, Aquacultural Engineering (7) 139-146
Given sufficient oxygen, fish production can be limited by a multiplicity of factors. Accurate determination of production capacity requires something other than an estimate of the biomass at which ambient un-ionized ammonia will reach a recommended, non-site-specific, maximum safe concentration. A chronic (1- to 2-month) bioassay can be used to...
Response of well aquifer systems to Earth tides: Problem revisited
Paul A. Hsieh, John D. Bredehoeft, Stuart Rojstaczer
1988, Water Resources Research (24) 468-472
Two recent works cause us to reexamine Bredehoeft's (1967) analysis of earthtide response of water wells. Narasimhan et al. (1984) raise several questions regarding Bredehoeft's (1967) analysis and suggest that the analysis is internally inconsistent. They argue that one cannot directly estimate the specific storage, which characterizes the drained behavior...
A magmatic model of Medicine Lake Volcano, California
J.M. Donnelly-Nolan
1988, Journal of Geophysical Research Solid Earth (93) 4412-4420
Medicine Lake volcano is a Pleistocene and Holocene shield volcano of the southern Cascade Range. It is located behind the main Cascade arc in an extensional tectonic setting where high-alumina basalt is the most commonly erupted lava. This basalt is parental to the higher-silica calc-alkaline and tholeiitic lavas that make...
Incidence of black-phase plumage in ferruginous hawks nesting in central North Dakota
P.M. Konrad, D.S. Gilmer
1988, Journal of Raptor Research (22) 92-93
Abstract has not been submitted...
Late Pleistocene drainage systems beneath Delaware Bay
H.J. Knebel, R.C. Circe
1988, Marine Geology (78) 285-302
Analyses of an extensive grid of seismic-reflection profiles, along with previously published sedimentary data and geologic information from surrounding coastal areas, outline the ancestral drainage systems of the Delaware River beneath lower Delaware Bay. Major paleovalleys within these systems have southeast trends, relief of 10-35 m, widths of 1-8 km,...
Hydrogeology of the Croton-Ossining area, Westchester County, New York
Richard J. Reynolds
1988, Water-Resources Investigations Report 87-4159
The hydrogeology of a 29-sq-mi area surrounding the village of Croton-on-Hudson, New York, is summarized on 6 sheets at 1:12 ,000 scale that show locations of wells and test holes, surficial geology, geologic sections, bedrock geology, land use, and soil permeability. The primary stratified-drift aquifer in this area is the...
Geomorphic measurements after a flood
1988, Book chapter, Flood geomorphology
Bedrock geology of the Vipond Park 15-minute, Stine Mountain 7 1/2-minute, and Maurice Mountain 7 1/2-minute quadrangles, Pioneer Mountains, Beaverhead County, Montana
E-an Zen
1988, Bulletin 1625
No abstract available....
Bacterial ethane formation from reduced, ethylated sulfur compounds in anoxic sediments
R.S. Oremland, Michael J. Whiticar, F.E. Strohmaier, R.P. Kiene
1988, Geochimica et Cosmochimica Acta (52) 1895-1904
Trace levels of ethane were produced biologically in anoxic sediment slurries from five chemically different aquatic environments. Gases from these locations displayed biogenic characteristics, having 12C-enriched values of δ13CH4 (−62 to −86%.), δ13C2H6 (−35 to −55%.) and high ratios (720 to 140,000) of CH4[C2H6+ C3H8]">CH4[C2H6+ C3H8]. Endogenous...
Oxygen isotope variations in granulite-grade iron formations: constraints on oxygen diffusion and retrograde isotopic exchange
Z.D. Sharp, J. R. O’Neil, E.J. Essene
1988, Contributions to Mineralogy and Petrology (98) 490-501
The oxygen isotope ratios of various minerals were measured in a granulite-grade iron formation in the Wind River Range, Wyoming. Estimates of temperature and pressure for the terrane using well calibrated geothermometers and geobarometers are 730??50?? C and 5.5??0.5 kbar. The mineral constraints on fluid compositions in the iron formation...
Sedimentology of the Argo and Gascoyne abyssal plains, NW Australia: Report on Ocean Drilling Program Leg 123 (Sept. 1–Nov. 1, 1988)
Jurgen Thurow
1988, Carbonates and Evaporites (3) 201-212
Ocean Drilling Program Leg 123 drilled two sites in the Indian Ocean in order to study the rifting and early spreading of one of the world’s oldest ocean basins.Site 765 was drilled in 5714 meters of water on the Argo Abyssal Plain northwest of Australia. The sedimentary succession...
Feeding ecology of canvasbacks staging on Pool 7 of the Upper Mississippi River
C. E. Korschgen, L. S. George, W. L. Green
M.W. Weller, editor(s)
1988, Book chapter, Waterfowl in winter
Foods consumed by canvasback ducks (Aythya valisineria), food availability, and energetic relationships were studied on Navigation Pool 7 of the upper Mississippi River in 1978, 1979, and 1980. Canvasbacks fed primarily upon winter buds of American wildcelery (Vallisneria americana) and tubers of stiff arrowhead (Sagittaria rigida). In 1980, waterfowl consumed...
Littoral foraging by red phalaropes during spring in the northern Bering Sea
J. Christopher Haney, Amy E. Stone
1988, The Condor (90) 723-726
Phalaropes demonstrate considerable plasticity in their choice of foraging habitats. The Red Phalarope (Phalaropus fulicaria) alternates use of pelagic environments in winter and migration (Taning 1933, Stanford 1953, Briggs et al 1984) with wet tundra habitats during the breeding season (Kistchinski 1975, Mayfield 1979, Ridley 1980). Foods available and taken...
Colony attendance and population monitoring of Black-legged Kittiwakes on the Semidi Islands, Alaska
Scott A. Hatch, Martha A. Hatch
1988, The Condor (90) 613-620
Patterns of colony attendance in Black-legged Kittiwakes (Rissa tridactyla) were studied over 5 years on the Semidi Islands, western Gulf of Alaska. A census period of 50 days, extending from first egg laying through final hatching, was appropriate because counts made then were subject to the least amount of daily...
Foraging by northern fulmars (Fulmarus glacialis) at a nearshore, anticyclonic tidal eddy in the northern Bering Sea, Alaska
J. Christopher Haney
1988, Colonial Waterbirds (11) 318-321
Northern Fulmars (Fulmar glacialis) fed on ice-associated macrofauna (probably gammarid amphipods) and pinniped offal concentrated by convergent flow at an eddy boundary near Northwest Cape on St. Lawrence Island, Alaska. The eddy was anticyclonic, measured approximately 1.5 by 2.25 km, and was generated by nearshore streaming induced by the cape’s...
Seasonal growth of the exotic submersed macrophyte Nitellopsis obtusa in the Detroit River of the Great Lakes
S. Jerrine Nichols, Donald W. Schloesser, James W. Geis
1988, Canadian Journal of Botany (66) 116-118
Seasonal growth and occurrence of an exotic submersed aquatic macrophyte, Nitellopsis obtusa, was monitored at the head of the Detroit River of the Great Lakes from June 1984 to April 1985.Nitellopsis obtusa first appeared in early July, increased in biomass from July to September, remained at relatively high biomass from September to...
Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam. Report C
D.E. Palmer, M.J. Parsley, L.G. Beckman
A.A. Nigro, editor(s)
1988, Report, Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam
No abstract available ...
Trout culture and dissolved gas supersaturation
W.V. Krise, J. W. Meade
1988, Salmonid (12) 7
Uranium-series age estimates and paleoclimatic significance of Pleistocene tufas from the Lahontan basin, California and Nevada
Y. Lao, L. Benson
1988, Quaternary Research (30) 165-176
An extended chronology of Lahontan basin lake levels based on uranium-series age estimates correlates with the global ice-volume record. Lake highstands occur at or shortly after times of maximum ice-sheet size. Moderate size lakes occur when the global ice volume is about 80% of its maximum. The data indicate that...
The information content of high-frequency seismograms and the near-surface geologic structure of "hard rock" recording sites
E. Cranswick
1988, Pure and Applied Geophysics PAGEOPH (128) 333-363
Due to hardware developments in the last decade, the high-frequency end of the frequency band of seismic waves analyzed for source mechanisms has been extended into the audio-frequency range (>20 Hz). In principle, the short wavelengths corresponding to these frequencies can provide information about the details of seismic sources, but...
