Sampling strategies for estimating acute and chronic exposures of pesticides in streams
Charles G. Crawford
2004, Journal of the American Water Resources Association (40) 485-502
The Food Quality Protection Act of 1996 requires that human exposure to pesticides through drinking water be considered when establishing pesticide tolerances in food. Several systematic and seasonally weighted systematic sampling strategies for estimating pesticide concentrations in surface water were evaluated through Monte Carlo simulation, using intensive datasets from four...
Development of a passive, in situ, integrative sampler for hydrophilic organic contaminants in aquatic environments
D.A. Alvarez, J. D. Petty, J.N. Huckins, T. L. Jones-Lepp, D.T. Getting, J.P. Goddard, S.E. Manahan
2004, Environmental Toxicology and Chemistry (23) 1640-1648
Increasingly it is being realized that a holistic hazard assessment of complex environmental contaminant mixtures requires data on the concentrations of hydrophilic organic contaminants including new generation pesticides, pharmaceuticals, personal care products, and many chemicals associated with household, industrial, and agricultural wastes. To address this issue, we developed a passive...
CORRELATOR 5.2 - A program for interactive lithostratigraphic correlation of wireline logs
Ricardo A. Olea
2004, Computers & Geosciences (30) 561-567
The limited radius of investigation of petrophysical measurements made in boreholes and the relatively large distances between wells result in an incomplete sensing of the subsurface through well logging. CORRELATOR is a program for estimating geological properties between logged boreholes. An initial and fundamental step is the lithostratigraphic correlation of...
Historical channel-bed elevation change as a result of multiple disturbances, Soldier Creek, Kansas
K. E. Juracek
2004, Physical Geography (25) 269-290
Historical information on stream stage/discharge relations from eight U.S. Geological Survey (USGS) streamflow-gaging stations was used to analyze channel-bed elevation change along Soldier Creek, a stream affected by multiple disturbances in northeast Kansas. The analysis provided information on the spatial (location, type, magnitude) and temporal (timing, duration, trend, rate) dimensions...
Effect of stock size, climate, predation, and trophic status on recruitment of alewives in Lake Ontario, 1978-2000
Robert O’Gorman, Brian F. Lantry, Clifford P. Schneider
2004, Transactions of the American Fisheries Society (133) 855-867
The population of alewives Alosa pseudoharengus in Lake Ontario is of great concern to fishery managers because alewives are the principal prey of introduced salmonines and because alewives negatively influence many endemic fishes. We used spring bottom trawl catches of alewives to investigate the roles of stock size, climate, predation, and lake...
Population dynamics of bloaters Coregonus hoyi in Lake Huron, 1980-1998
Jeffrey S. Schaeffer
2004, Annales Zoologici Fennici (41) 271-279
I investigated population dynamics of bloaters Coregonus hoyi in Lake Huron using data collected during 1980-1998 from fixed-site trawl surveys. Bloaters were uncommon in 1980, but abundance increased during 1980-1992 through a series of strong year classes. High adult abundance appeared to suppress recruitment after 1992, and the population subsequently...
Escherichia coli sampling reliability at a frequently closed Chicago beach: monitoring and management implications
Richard L. Whitman, Meredith B. Nevers
2004, Environmental Science & Technology (38) 4241-4246
Monitoring beaches for recreational water quality is becoming more common, but few sampling designs or policy approaches have evaluated the efficacy of monitoring programs. The authors intensively sampled water for E. coli (N=1770) at 63rd Street Beach, Chicago for 6 months in 2000 in order to (1) characterize spatial-temporal trends, (2) determine...
Nesting ecology of waterbirds at Grays Lake, Idaho
J. E. Austin, W.H. Pyle
2004, Western North American Naturalist (64) 277-292
Montane wetlands provide valuable habitat for nesting waterfowl and other waterbirds in the western United States, but relatively little information is available about the nesting ecology of their waterbird communities. We describe the general nesting ecology of breeding waterbirds at a large, shallow montane wetland in southeast Idaho during 1997-2000....
Spawning by lake sturgeon (Acipenser fulvescens) in the Detroit River
N.M. Caswell, D. L. Peterson, B.A. Manny, G.W. Kennedy
2004, Journal of Applied Ichthyology (20) 1-6
Overfishing and habitat destruction in the early 1900s devastated lake sturgeon (Acipenser fulvescens) populations in the Great Lakes. Although a comprehensive restoration strategy for this species was recently drafted by the Michigan Department of Natural Resources, a lack of current data on Great Lakes sturgeon stocks has hindered rehabilitation efforts....
Modeling the suppression of sea lamprey populations by the release of sterile males or sterile females
Waldemar Klassen, Jean V. Adams, Michael B. Twohey
2004, Journal of Great Lakes Research (30) 463-473
The suppressive effects of trapping adult sea lampreys, Petromyzon marinus Linnaeus, and releasing sterile males (SMRT) or females (SFRT) into a closed system were expressed in deterministic models. Suppression was modeled as a function of the proportion of the population removed by trapping, the number of sterile animals released, the...
Foreword [to Canids: foxes, wolves, jackals, and dogs: status survey and conservation action plan]
L. David Mech
Claudio Sillero-Zubiri, Michael Hoffmann, David W. Macdonald, editor(s)
2004, Book chapter, Canids: foxes, wolves, jackals, and dogs: status survey and conservation action plan
Comparative survival and growth of Atlantic salmon from egg stocking and fry releases
James H. Johnson
2004, North American Journal of Fisheries Management (24) 1409-1412
First summer survival and subsequent growth of Atlantic salmon Salmo salar planted as eggs and fry in a tributary of Cayuga Lake, New York, were examined for 3 years. Atlantic salmon were planted in December 1999-2001 in 20 Whitlock-Vibert (W-V) egg incubators, each containing 300 eyed eggs. The following May,...
Economic and health risk trade-offs of swim closures at a Lake Michigan beach
Sharyl M. Rabinovici, Richard L. Bernknopf, Anne M. Wein, Don L. Coursey, Richard L. Whitman
2004, Environmental Science & Technology (38) 2737-2745
This paper presents a framework for analyzing the economic, health, and recreation implications of swim closures related to high fecal indicator bacteria (FIB) levels. The framework utilizes benefit transfer policy analysis to provide a practical procedure for estimating the effectiveness of recreational water quality policies. Evaluation criteria include the rates...
Characterization and comparison of phytoplankton in selected lakes of five Great Lakes area national parks
Meredith Becker Nevers, Richard L. Whitman
2004, Aquatic Ecosystem Health & Management (7) 515-528
Phytoplankton species have been widely used as indicators of lake conditions, and they may be useful for detecting changes in overall lake condition. In an attempt to inventory and monitor its natural resources, the National Park Service wants to establish a monitoring program for aquatic resources in the Great Lakes...
Elements of a predictive model for determining beach closures on a real time basis: the case of 63rd Street Beach Chicago
Greg A. Olyphant, Richard L. Whitman
2004, Environmental Monitoring and Assessment (98) 175-190
Data on hydrometeorological conditions and E. coli concentration were simultaneously collected on 57 occasions during the summer of 2000 at 63rd Street Beach, Chicago, Illinois. The data were used to identify and calibrate a statistical regression model aimed at predicting when the bacterial concentration of the beach water was above...
Implications of hydrologic variability on the succession of plants in Great Lakes wetlands
Douglas A. Wilcox
2004, Aquatic Ecosystem Health & Management (7) 223-231
Primary succession of plant communities directed toward a climax is not a typical occurrence in wetlands because these ecological systems are inherently dependent on hydrology, and temporal hydrologic variability often causes reversals or setbacks in succession. Wetlands of the Great Lakes provide good examples for demonstrating the implications of hydrology...
Microbial precipitation of dolomite in methanogenic groundwater
Jennifer A. Roberts, Philip C. Bennett, Luis A. Gonzalez, G.L. Macpherson, Kitty L. Milliken
2004, Geology (32) 277-280
We report low-temperature microbial precipitation of dolomite in dilute natural waters from both field and laboratory experiments. In a freshwater aquifer, microorganisms colonize basalt and nucleate nonstoichiometric dolomite on cell walls. In the laboratory, ordered dolomite formed at near-equilibrium conditions from groundwater with molar Mg:Ca ratios of <1; dolomite was...
Effect of Fe(III) on 1,1,2,2-Tetrachloroethane degradation and vinyl chloride accumulation in wetland sediments of the Aberdeen Proving Ground
Elizabeth Jones, Mary Voytek, Michelle Lorah
2004, Bioremediation Journal (8) 31-45
1,1,2,2-Tetrachloroethane (TeCA) contaminated groundwater at the Aberdeen Proving Ground discharges through an anaerobic wetland in West Branch Canal Creek (MD), where dechlorination occurs. Two microbially mediated pathways, dichloroelimination and hydrogenolysis, account for most of the TeCA degradation at this site. The dichloroelimination pathways lead to the formation of vinyl chloride...
Habitat selection by two species of burrowing mayfly nymphs in the Les Cheneaux Islands region of northern Lake Huron
Marc A. Blouin, Patrick Hudson, Margret Chriscinske
2004, Journal of Freshwater Ecology (19) 507-514
This study focused primarily on the habitat preferences of Hexagenia limbata andEphemera simulans, two species prevalent in northern Lake Huron, to gain a better understanding of the key components that determined their distribution and abundance. Both species preferred habitats based upon depth and sediment type. In addition, the burrowing activity of H. limbata was...
A Holocene history of dune-mediated landscape change along the southeastern shore of Lake Superior
Walter L. Loope, Timothy G. Fisher, Harry M. Jol, John B. Anderton, William L. Blewett
2004, Geomorphology (61) 303-322
Causal links that connect Holocene high stands of Lake Superior with dune building, stream damming and diversion and reservoir impoundment and infilling are inferred from a multidisciplinary investigation of a small watershed along the SE shore of Lake Superior. Radiocarbon ages of wood fragments from in-place stumps and soil O...
Organochlorine compounds in Lake Superior: Chiral polychlorinated biphenyls and biotransformation in the aquatic food web
Charles S. Wong, Scott A. Mabury, D. Michael Whittle, Sean M. Backus, Camilla Teixeira, David S. DeVault, Charles R. Bronte, Derek C.G. Muir
2004, Environmental Science & Technology (38) 84-92
The enantiomeric composition of seven chiral PCB congeners was measured in the Lake Superior aquatic food web sampled in 1998, to determine the extent of enantioselective biotransformation in aquatic biota. All chiral PCB congeners studied (CBs 91, 95, 136, 149, 174, 176, and 183) biomagnified in the Lake Superior aquatic...
Small boats disturb fish-holding marbled murrelets
Suzann G. Speckman, John F. Piatt, Alan M. Springer
2004, Northwestern Naturalist (85) 32-34
Disturbance of seabirds by people at nesting colonies can reduce reproductive success and alter population demographics (Vermeer and Rankin 1984). In response to disturbance, adult seabirds may increase the incidence of alarm postures and alarm calling (Burger and Gochfeld 1993), increase heart and breathing rates (Culik and others 1990; Wilson...
Basis for paleoenvironmental interpretation of magnetic properties of sediment from Upper Klamath Lake (Oregon): Effects of weathering and mineralogical sorting
J. G. Rosenbaum, R. L. Reynolds
2004, Journal of Paleolimnology (31) 253-265
Studies of magnetic properties enable reconstruction of environmental conditions that affected magnetic minerals incorporated in sediments from Upper Klamath Lake. Analyses of stream sediment samples from throughout the catchment of Upper Klamath Lake show that alteration of Fe-oxide minerals during subaerial chemical weathering of basic volcanic rocks has significantly changed...
Reach-scale cation exchange controls on major ion chemistry of an Antarctic glacial meltwater stream
Michael N. Gooseff, Diane M. McKnight, Robert L. Runkel
2004, Aquatic Geochemistry (10) 221-238
McMurdo dry valleys of Antarctica represent the largest of the ice-free areas on the Antarctic continent, containing glaciers, meltwater streams, and closed basin lakes. Previous geochemical studies of dry valley streams and lakes have addressed chemical weathering reactions of hyporheic substrate and geochemical evolution of dry valley surface waters. We...
Biotic and abiotic factors related to lake herring recruitment in the Wisconsin waters of Lake Superior, 1984-1998
Michael H. Hoff
2004, Journal of Great Lakes Research (30) 423-433
Lake Superior lake herring (Coregonus artedi) recruitment to 13-14 months of age in the Wisconsin waters of Lake Superior varied by a factor of 5,233 during 1984-1998. Management agencies have sought models that accurately predict recruitment, but no satisfactory model had previously been developed. Lake herring recruitment was modeled to...
