Geochemical variations in Peoria Loess of western Iowa indicate paleowinds of midcontinental North America during last glaciation
D.R. Muhs, E. Arthur Bettis III
2000, Quaternary Research (53) 49-61
Peoria Loess deposited in western Iowa during the last glacial maximum (LGM) shows distinct geochemical and particle-size variations as a function of both depth and distance east of the Missouri River. Geochemical and particle-size data indicate that Peoria Loess in western Iowa probably had two sources: the Missouri River valley,...
Organochlorine and trace element contamination in wintering and migrating diving ducks in the southern Great Lakes, USA, since the zebra mussel invasion
Christine M. Custer, T. W. Custer
2000, Environmental Toxicology and Chemistry (19) 2821-2829
Because of the potential for increased trophic transfer of contaminants by zebra mussels (Dreissena sp.) to higher trophic levels, we collected four species of waterfowl (n = 65 ducks) from four locations in Lake Erie, Lake St. Clair, and Lake Michigan, USA, between 1991 and 1993 for organochlorine contaminant and...
Efficacy of hydrogen peroxide to control mortalities associated with bacterial gill disease infections on hatchery-reared salmonids
J.J. Rach, M.P. Gaikowski, R.T. Ramsay
2000, Journal of Aquatic Animal Health (12) 119-127
The efficacy of hydrogen peroxide to control mortalities associated with bacterial gill disease (BGD) was evaluated in three trials conducted at two Wisconsin Department of Natural Resources hatcheries. Microscopic examination of the fish gills before treatment revealed gill damage and the presence of bacteria indicative of BGD. In separate trials,...
Declining scaup populations: issues, hypotheses, and research needs
J. E. Austin, A. D. Afton, M.G. Anderson, R. G. Clark, Christine M. Custer, J.S. Lawrence, J.B. Pollard, J.K. Ringelman
2000, Wildlife Society Bulletin (28) 254-263
The population estimate for greater (Aythya marila) and lesser (Aythya affinis) scaup (combined) has declined dramatically since the early 1980s to record lows in 1998. The 1998 estimate of 3.47 million scaup is far below the goal of 6.3 million set in the North American Waterfowl Management Plan (NAWMP), causing...
Mode of occurrence of arsenic in four US coals
A. Kolker, Frank E. Huggins, C.A. Palmer, N. Shah, S.S. Crowley, G.P. Huffman, R. B. Finkelman
2000, Fuel Processing Technology (63) 167-178
An integrated analytical approach has been used to determine the mode of occurrence of arsenic in samples of four widely used US coals: the Pittsburgh, Illinois #6, Elkhorn/Hazard, and Wyodak. Results from selective leaching, X-ray absorption fine structure (XAFS) spectroscopy, and electron microprobe analysis show that pyrite is the principal...
A surface-associated activity trap for capturing water-surface and aquatic invertebrates in wetlands
Mark A. Hanson, Christiane C. Roy, Ned Euliss, Kyle D. Zimmer, Michael R. Riggs, Malcolm G. Butler
2000, Wetlands (20) 205-212
We developed a surface-associated activity trap (SAT) for sampling aquatic invertebrates in wetlands. We compared performance of this trap with that of a conventional activity trap (AT) based on non-detection rates and relative abundance estimates for 13 taxa of common wetland invertebrates and for taxon richness using data from experiments...
Trace elements, organochlorines, polycyclic aromatic hydrocarbons, dioxins, and furans in lesser scaup wintering on the Indiana Harbor Canal
T. W. Custer, Christine M. Custer, R. K. Hines, D. W. Sparks
2000, Environmental Pollution (110) 469-482
During the winter of 1993a??94, male lesser scaup (Aythya affinis) were collected on the heavily polluted Indiana Harbor Canal (IHC), East Chicago, IN, USA, and examined for tissue contaminant levels. Lesser scaup collected on the IHC had higher concentrations of cadmium (Cd), mercury (Hg), selenium (Se), polychlorinated biphenyls (PCBs), selected...
Effects of malaria (Plasmodium relicturm) on activity budgets of experimentally-infected juvenile Apapane (Himatione sanquinea)
N. Yorinks, C. T. Atkinson
2000, The Auk (117) 731-738
We used behavioral, physiological, and parasitological measures to document effects of acute malarial infections on activity budgets of experimentally infected juvenile Apapane (Himatione sanguinea). Five of eight birds died within 20 to 32 days after exposure to a single infective mosquito bite. Infected Apapane devoted less time to locomotory activities...
Nitrogen flux and sources in the Mississippi River Basin
D. A. Goolsby, W.A. Battaglin, Brent T. Aulenbach, R. P. Hooper
2000, Science of Total Environment (248) 75-86
Nitrogen from the Mississippi River Basin is believed to be at least partly responsible for the large zone of oxygen-depleted water that develops in the Gulf of Mexico each summer. Historical data show that concentrations of nitrate in the Mississippi River and some of...
Swimming performance of larval robust redhorse Moxostoma robustum and low-velocity habitat modeling in the Oconee River, Georgia
Carl R. Ruetz III, Cecil A. Jennings
2000, Transactions of the American Fisheries Society (129) 398-407
The robust redhorse Moxostoma robustum occurs in an 85-km stretch of the Oconee River, Georgia, downstream of a hydropower dam. The population consists primarily of older individuals and recruitment in recent years has been minimal. Operation of the hydropower dam may have affected recruitment negatively by displacing newly hatched larvae...
Progression and severity of gas bubble trauma in juvenile salmonids
M.G. Mesa, L.K. Weiland, A.G. Maule
2000, Transactions of the American Fisheries Society (129) 174-185
We conducted laboratory experiments to assess the progression and to quantify the severity of signs of gas bubble trauma (GBT) in juvenile chinook salmon Oncorhynchus tshawytscha and steelhead Oncorhynchus mykiss exposed to different levels of total dissolved gas (TDG), and we attempted to relate these signs to the likelihood of...
Use of field-applied quality control samples to monitor performance of a Goulden large-sample extractor/GC-MS method for pesticides in water
W.T. Foreman, Paul M. Gates, G.D. Foster, F. A. Rinella, S. W. McKenzie
2000, International Journal of Environmental Analytical Chemistry (77) 39-62
Since 1985, the Goulden large-sample extractor (GLSE) has been used to isolate a broad array of trace-organic contaminants from large volumes of water. In this study, field-applied quality control measures, including matrix and surrogate spikes and blanks, were used to monitor method performance from GLSE extraction through GC-MS analysis. The...
Patterns of artificial nest depredation in a large floodplain forest
Melinda G. Knutson, Steven J. Gutreuter, Erwin E. Klaas
2000, Journal of Wildlife Management (64) 576-583
We used artificial bird nests to examine the relative effects of local habitat features and the surrounding landscape on the probability of songbird nest depredation in floodplain forests of the Upper Mississippi River. We found that the probability of depredation increased with size of floodplain forest plots. In small plots,...
Influence of costocking on growth of young-of-year brook trout and rainbow trout
J. Jeffery Isely, Chris Kempton
2000, Transactions of the American Fisheries Society (129) 613-617
We examined the effects of costocking on growth of hatchery-produced young-of-year brook trout Salvelinus fontinalis and rainbow trout Oncorhynchus mykiss in the laboratory. Fry of both species (brook trout = 0.16 ± 0.01 g; rainbow trout = 0.18 ± 0.01 g; mean weight ± standard deviation) were stocked into 400-L recirculation raceways at a...
Chronological refinement of an ice core record at Upper Fremont Glacier in south central North America
P. F. Schuster, D. E. White, D. L. Naftz, L.D. Cecil
2000, Journal of Geophysical Research D: Atmospheres (105) 4657-4666
The potential to use ice cores from alpine glaciers in the midlatitudes to reconstruct paleoclimatic records has not been widely recognized. Although excellent paleoclimatic records exist for the polar regions, paleoclimatic ice core records are not common from midlatitude locations. An ice core removed from the Upper Fremont Glacier in...
Distribution of trace elements in selected pulverized coals as a function of particle size and density
C.L. Senior, T. Zeng, J. Che, M.R. Ames, A.F. Sarofim, I. Olmez, Frank E. Huggins, N. Shah, G.P. Huffman, A. Kolker, S. Mroczkowski, C. Palmer, R. Finkelman
2000, Fuel Processing Technology (63) 215-241
Trace elements in coal have diverse modes of occurrence that will greatly influence their behavior in many coal utilization processes. Mode of occurrence is important in determining the partitioning during coal cleaning by conventional processes, the susceptibility to oxidation upon exposure to air, as well as the changes in physical...
Origin of Amazon mudbanks along the northeastern coast of South America
M. A. Allison, M.T. Lee, A.S. Ogston, R.C. Aller
2000, Marine Geology (163) 241-256
Seismic profiles, sediment cores, and water column measurements were collected along the northeastern coast of Brazil to examine the origin of mudbanks in the Amazon coastal mud belt. These 10-60-km-long, shore-attached features previously had been observed to migrate along the 1200 km coast of the Guianas in response to wave...
The vulnerability of wetlands to climate change: A hydrologic landscape perspective
Thomas C. Winter
2000, Journal of the American Water Resources Association (36) 305-311
The vulnerability of wetlands to changes in climate depends on their position within hydrologic landscapes. Hydrologic landscapes are defined by the flow characteristics of ground water and surface water and by the interaction of atmospheric water, surface water, and ground water for any given locality or region. Six general hydrologic...
A new method for collection of nitrate from fresh water and the analysis of nitrogen and oxygen isotope ratios
S. R. Silva, C. Kendall, D.H. Wilkison, A.C. Ziegler, Cecily C.Y. Chang, R.J. Avanzino
2000, Journal of Hydrology (228) 22-36
A new method for concentrating nitrate from fresh waters for δ15N and δ18O analysis has been developed and field-tested for four years. The benefits of the method are: (1) elimination of the need to transport large volumes of water to the laboratory for processing; (2) elimination of the need for hazardous preservatives; and (3) the...
Downed wood in Micronesian mangrove forests
J. A. Allen, K. C. Ewel, B. D. Keeland, T. Tara, T. J. Smith III
2000, Wetlands (20) 169-176
Dead, downed wood is an important component of upland forest and aquatic ecosystems, but its role in wetland ecosystems, including mangroves, is poorly understood. We measured downed wood in ten sites on the western Pacific islands of Kosrae, Pohnpei, and Yap, all located within the Federated States of Micronesia. Our...
National Wildlife Health Center's Quarterly Mortality Report
K. A. Converse, Kimberli J.G. Miller, L. Glaser, T. Creekmore, A. Schrader
2000, Supplement to the Journal of Wildlife Diseases (36)
Invasion by a Japanese marine microorganism in western North America
M. McGann, D. Sloan, A.N. Cohen
2000, Hydrobiologia (421) 25-30
The earliest record in western North America of Trochammina hadai Uchio, a benthic foraminifer common in Japanese estuaries, is from sediment collected in Puget Sound in 1971. It was first found in San Francisco Bay in sediment samples taken in 1983, and since 1986 has been collected at 91% of...
Effects of whole sediments from Corpus Christi Bay on survival, growth, and reproduction of the mysid, Americamysis bahia (formerly Mysidopsis bahia)
G.M. Cripe, R.S. Carr, S.S. Foss, P.S. Harris, R. S. Stanley
2000, Bulletin of Environmental Contamination and Toxicology (64) 426-433
[No abstract available]...
Seasonal movements and pelagic habitat use of Murres and Puffins determined by satellite telemetry
Scott A. Hatch, P.M. Meyers, D.M. Mulcahy, David C. Douglas
2000, Condor (102) 145-154
We tracked the movements of Common Murres (Uria aalge), Thick-billed Murres (U. lomvia), and Tufted Puffins (Fratercula cirrhata) using surgically implanted satellite transmitters. From 1994–1996, we tagged 53 birds from two colonies in the Gulf of Alaska (Middleton Island and Barren Islands) and two colonies in the Chukchi Sea (Cape...
National Wildlife Health Center's Quarterly Mortality Report
K. A. Converse, Kimberli J.G. Miller, L. Glaser, T. Creekmore, A. Schrader
2000, Supplement to the Journal of Wildlife Diseases (36)
No abstract available....
