Sediment distribution on a storm-dominated insular shelf, Luquillo, Puerto Rico, U.S.A.
W. C. Schwab, R. W. Rodriguez, W.W. Danforth, M. H. Gowen
1996, Journal of Coastal Research (12) 147-159
A sea-floor mapping investigation designed to assess the sediment distribution, the movement of the nearshore sand supply, and the fate of sediment eroded from the shoreline was conducted using high-resolution sidescan-sonar, seismic reflection, and sediment sampling techniques on the northern insular shelf of Puerto Rico, off the town of Luquillo....
Frequency analyses for recent regional floods in the United States
Nick B. Melcher, Patsy G. Martinez
Housner G.W.Chung R.M., editor(s)
1996, Conference Paper, Proceedings of the Conference on Natural Disaster Reduction
During 1993-95, significant floods that resulted in record-high river stages, loss of life, and significant property damage occurred in the United States. The floods were caused by unique global weather patterns that produced large amounts of rain over large areas. Standard methods for flood-frequency analyses may not adequately consider the...
Effects of acid mine effluent on sediment and water geochemistry, Ruttan Cu-Zn mine
W.W. Shilts
1996, Bulletin of the Geological Survey of Canada 77-103
Waters were collected from the surface and bottom of four lakes as well as from the Churchill River and approximately 20 small ponds beside the Leaf Rapids-Ruttan mine-South Indian Lake road to determine geochemical variations related to tailings and waste rock disposal from the Ruttan Cu-Zn VHMS deposit. Using sonar...
Comparison of the uptake of dioxin-like compounds by caged channel catfish and semipermeable membrane devices in the Saginaw River, Michigan
Robert W. Gale, James N. Huckins, Jimmie D. Petty, Paul H. Peterman, Lisa L. Williams, Douglas Morse, Ted R. Schwartz, Donald E. Tillitt
1996, Environmental Science & Technology (31) 178-187
Elevated concentrations of planar, halogenated hydrocarbons have been linked to reproductive problems in a variety of fish-eating birds and mammals in the Great Lakes and in particular Saginaw Bay. Currently, there are no accurate procedures to assess bioavailability of these contaminants. Polychlorinated dibenzo-p-dioxins and dibenzofurans and mono- and non-ortho-chloro-substituted biphenyls...
Canvasback mortality from illegal hunting on the upper Mississippi River
Carl E. Korschgen, Kevin P. Kenow, James M. Nissen, John F. Wetzel
1996, Wildlife Society Bulletin (24) 132-139
To quantify the consequences of local hunting on illegal kill of canvasbacks (Aythya valisineria), we studied the behavior of hunters on a 646-ha area open to duck hunting (closed to canvasback hunting) on Lake Onalaska, Navigation Pool 7, Wisconsin, during the 1991 and 1992 waterfowl hunting seasons. Law enforcement officers...
Acute toxicity of three fire-retardant and two fire-suppressant foam formulations to the early life stages of rainbow trout (Oncorhynchus mykiss)
Mark P. Gaikowski, Steven J. Hamilton, Kevin J. Buhl, Susan F. McDonald, Cliff H. Summers
G. Linder, S. Krest, D. Sparling, E. Little, editor(s)
1996, Environmental Toxicology and Chemistry (15) 1365-1374
Laboratory studies were conducted with five early life stages of rainbow trout, Oncorhynchus mykiss, to determine the acute toxicities of five fire-fighting chemical formulations in standardized soft and hard water. Eyed egg, embryo–larvae, swim-up fry, and 60- and 90-d posthatch juveniles were exposed to three fire retardants (Fire-Trol LCG-R, Fire-Trol...
Predation rates by North Sea cod (Gadus morhua) - Predictions from models on gastric evacuation and bioenergetics
S. Hansson, L. G. Rudstam, J.F. Kitchell, P.E. Peppard, M. Hilden, Barry L. Johnson
1996, ICES Journal of Marine Science (53) 107-114
We compared four different methods for estimating predation rates by North Sea cod (Gadus morhua). Three estimates, based on gastric evacuation rates, came from an ICES multispecies working group and the fourth from a bioenergetics model. The bioenergetics model was developed from a review of literature on cod physiology....
Temporal and vertical distribution of total ammonia nitrogen and un-ionized ammonia nitrogen in sediment pore water from the upper Mississippi River
Bradley E. Frazier, Teresa J. Naimo, Mark B. Sandheinrich
1996, Environmental Toxicology and Chemistry (15) 92-99
We examined the temporal and vertical distribution of total ammonia nitrogen (TAN) and un-ionized ammonia nitrogen (NH3-N) in sediment pore water and compared the temporal patterns of TAN and NH3-N concentrations in overlying surface water with those in pore water. Pore water was obtained by core extraction and subsequent centrifugation....
Implanting intra-abdominal radiotransmitters with external whip antennas in ducks
C. E. Korschgen, Kevin P. Kenow, Annette Gendron-Fitzpatrick, William L. Green, F. Joshua Dein
1996, Journal of Wildlife Management (60) 132-137
We developed and evaluated a surgical procedure for implanting intra-abdominal radiotransmitters with external whip antennas in captive mallards (Anas platyrhynchos). Transmitters were implanted in the abdominal cavity and the antennas exited through the caudal abdominal wall and skin. Birds with implanted transmitters developed mild to moderate localized air sac reactions....
Evening flights of female northern pintails from a major roost site
R. R. Cox Jr., A. D. Afton
1996, Condor (98) 810-819
We monitored evening flights of female Northern Pintails (Anas acuta) from Lacassine National Wildlife Refuge (NWR) in southwestern Louisiana during winters of 1991-1992 and 1992-1993. We analyzed the influence of female age, winter, and date within wintering period on three flight parameters: distance, duration, and departure time. Flight distance and...
Prevention of zebra mussel infestation and dispersal during aquaculture operations
D. L. Waller, S.W. Fisher, H. Dabrowska
1996, Progressive Fish-Culturist (58) 77-84
The zebra mussel Dreissena polymorpha, an exotic invasive species, poses a major threat to North American fish management programs and the aquaculture industry. Fish hatcheries may become infected with zebra mussels from a variety of sources, including the water supply, fish shipments, boats, and equipment. The hatcheries could then serve as...
Authigenic feldspar as an indicator of paleo-rock/water interactions in Permian carbonates of the Northern Calcareous Alps, Austria
C. Spotl, M. Kralik, Michael J. Kunk
1996, Journal of Sedimentary Research (66) 139-146
Dolostones interbedded with Upper Permian evaporites at the base of the Northern Calcareous Alps contain abundant authigenic K-feldspar. Two petrographically, structurally, and isotopically distinct generations of K-feldspar can be distinguished: crystals composed of an inclusion. rich core and a clear rim, and optically...
A comparative analysis of clinging ability among pad-bearing lizards
Duncan J. Irschick, Christopher C. Austin, K. Petren, Robert N. Fisher, J. B. Losos, O. Ellers
1996, Biological Journal of the Linnean Society (59) 21-35
We examined clinging ability, subdigital pad area and body mass in 14 pad-bearing lizard species from three families to test three predictions: (1) clinging ability and pad area should be tightly correlated among species; (2) pad area and clinging ability should scale similarly to body mass among 14 species; and...
The decline of amphibians in California's Great Central Valley
Robert N. Fisher, H.B. Shaffer
1996, Conservation Biology (10) 1387-1397
Declines in amphibian populations are rarely reported on the community or ecosystem level. We combined broad-scale field sampling with historical analyses of museum records to quantify amphibian declines in California’s Great Central Valley. Overall, amphibians showed an unambiguous pattern of decline, although the intensity of decline varied both geographically and...
Electron-probe microanalysis of light elements in coal and other kerogen
R.M. Bustin, Maria Mastalerz, M. Raudsepp
1996, International Journal of Coal Geology (32) 5-30
Recent advances in electron microprobe technology including development of layered synthetic microstructures, more stable electronics and better matrix-correction programs facilitated routine microanalysis of the light elements in coal. Utilizing an appropriately equipped electron microprobe with suitable standards, it is now possible to analyze directly the light elements (C, O and...
Calculated volatilization rates of fuel oxygenate compounds and other gasoline-related compounds from rivers and streams
J. F. Pankow, R. E. Rathbun, J.S. Zogorski
1996, Chemosphere (33) 921-937
Large amounts of the 'fuel-oxygenate' compound methyl-tert-butyl ether (MTBE) are currently being used in gasoline to reduce carbon monoxide and ozone in urban air and to boost fuel octane. Because MTBE can be transported to surface waters in various ways, established theory was used to calculate half-lives for MTBE volatilizing...
Illite polytype quantification using Wildfire© calculated x-ray diffraction patterns
Georg H. Grathoff, D.M. Moore
1996, Clays and Clay Minerals (44) 835-842
Illite polytype quantification allows the differentiation of diagenetic and detrital illite components. In Paleozoic shales from the Illinois Basin, we observe 3 polytypes: 1Md, 1M and 2M1. 1Md and 1M are of diagenetic origin and 2M1 is of detrital origin. In this paper, we compare experimental X-ray diffraction (XRD) traces...
The Government Information Locator Service (GILS)
E. Christian
1996, Information Services and Use (16) 25-42
In coordination with the Information Infrastructure Task Force (IITF), the Office of Management and Budget (OMB) is promoting the establishment of an agency-based Government Information Locator Service (GILS) to help the public locate and access information throughout the Federal Government. This report presents a vision of how GILS will be...
Effects of soil moisture and temperature on overwintering survival of Curculio larvae (Coleoptera : Curculionidae)
Mark A. Ricca, Floyd W. Weckerly, Raymond D. Semlitsch
1996, American Midland Naturalist (136) 203-206
Few studies to date have investigated factors, other than mast crop size, that influence the dynamics of Curculio populations.W e examined the effects of varying levels of soil moisture (0.35, 0.4 and 0.5 g water/g soil) and temperature (8, 14 and 20 C) on over wintering survival of Curculio larvae...
Paleoslope, sea-level and climate controls on Upper Miocene platform evolution, Las Negras area, southeastern Spain
E. K. Franseen, R.H. Goldstein
Franseen E.K., editor(s)
1996, Book chapter, Models for carbonate stratigraphy from Miocene reef complexes of Mediterranean regions
Carbonate platforms in the Las Negras area (southeastern Spain) evolved from onlapping ramps to fringing reef complexes later draped by cyclic shallow marine strata. Although sea-level history and paleoclimate had an effect on platform evolution, substrate topography played a dominant role. The strata are divided into five depositional sequences of...
Modeling impact of small Kansas landfills on underlying aquifers
M. Sophocleous, N.G. Stadnyk, M. Stotts
1996, Journal of Environmental Engineering (122) 1067-1077
Small landfills are exempt from compliance with Resource Conservation and Recovery Act Subtitle D standards for liner and leachate collection. We investigate the ramifications of this exemption under western Kansas semiarid environments and explore the conditions under which naturally occurring geologic settings provide sufficient protection against ground-water contamination. The methodology...
Infestation of an introduced host, the European green crab, Carcinus maenas by a native symbiotic nemertean egg predator, Carcinonemertes epialti
M.E. Torchin, K. D. Lafferty, A. M. Kuris
1996, Journal of Parasitology (82) 449-453
The recent introduction of the European green crab, Carcinus maenas, to the west coast of the U.S. has provided an opportunity for host transfer of the symbiotic nemertean egg predator, Carcinonemertes epialti, from its native shore crab host, Hemigrapsus oregonensis to the exotic C. maenas. Two surveys of C. maenas...
The effect of scale on defining topographically suitable desert bighorn sheep habitat
D.D. Divine, D.W. Ebert, C. L. Douglas
1996, Desert Bighorn Council Transactions (40) 13-18
Geographic distribution: Ambystoma californiense (California tiger salamander)
M.R. Jennings
1996, Herpetological Review (27) 147
Metasomatic tourmalinite formation along basement-cover decollements, Orobic Alps, Italy
J. F. Slack, C.W. Passchier, J.S. Zhang
1996, Schweizerische Mineralogische und Petrographische Mitteilungen (76) 193-207
Cryptocrystalline tourmalinites that occur discontinuously for ???30 km along basement-cover de??collements of the Orohic Alps (Italy) formed by the metasomatism of aluminous cataclasites derived from Permian conglomerates and/or feldspathic sandstones. Using Al as an immobile element monitor, calculations show that the majority of tourmalinites in the region formed through the...
