Winter diet of lake herring (Coregonus artedi) in western Lake Superior
Jason Link, James H. Selgeby, Michael H. Hoff, Craig Haskell
1995, Journal of Great Lakes Research (21) 395-399
Lake herring (Coregonus artedi) and zooplankton samples were simultaneously collected through the ice in the Apostle Islands region of western Lake Superior to provide information on the winter feeding ecology of lake herring. Zooplankton constituted the entire diet of the 38 lake herring collected for this study. We found no...
Find the fish: using PROC SQL to build a relational database
Mary C. Fabrizio, Scott N. Nelson
1995, Book chapter, Client/server computing with the SAS system: tips and techniques
Reliable estimates of abundance and survival, gained through mark-recapture studies, are necessary to better understand how to manage and restore lake trout populations in the Great Lakes. Working with a 24-year data set from a mark-recapture study conducted in Lake Superior, we attempted to disclose information on tag shedding...
Lake trout (Salvelinus namaycush) populations in Lake Superior and their restoration in 1959-1993
Michael J. Hansen, James W. Peck, Richard G. Schorfhaar, James H. Selgeby, Donald R. Schreiner, Stephen T. Schram, Bruce L. Swanson, Wayne R. MacCallum, Mary K. Burnham-Curtis, Gary L. Curtis, John W. Heinrich, Robert J. Young
1995, Journal of Great Lakes Research (21) 152-175
Naturally-reproducing populations of lake trout (Salvelinus namaycush) have been reestablished in most of Lake Superior, but have not been restored to 1929-1943 average abundance. Progress toward lake trout restoration in Lake Superior is described, management actions are reviewed, and the effectiveness of those actions is evaluated; especially stocking lake trout...
Evidence that PCBs are approaching stable concentrations in Lake Michigan fishes
Craig A. Stow, Stephen R. Carpenter, Lisa A. Eby, James F. Amrhein, Robert J. Hesselberg
1995, Ecological Applications (5) 248-260
We examined PCB concentration data for seven species of Lake Michigan fishes to determine what trends were apparent °20 yr after PCB restrictions became effective. Total PCB concentrations in all seven species, lake trout (Salvelinus namaycush), rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta), chinook salmon (Oncorhynchus tshawytscha), coho salmon...
Application of brain cholinesterase reactivation to differentiate between organophosphorus and carbamate pesticide exposure in wild birds
M. R. Smith, N. J. Thomas, C. Hulse
1995, Journal of Wildlife Diseases (31) 263-267
Brain cholinesterase activity was measured to evaluate pesticide exposure in wild birds. Thermal reactivation of brain cholinesterase was used to differentiate between carbamate and organophosphorus pesticide exposure. Brain cholinesterase activity was compared with gas chromatography and mass spectrometry of stomach contents. Pesticides were...
Declining populations of the fingernail clam Musculium transversum in the upper Mississippi River
D. M. Wilson, T.J. Naimo, J.G. Weiner, R.V. Anderson, M.B. Sandheinrich, Richard E. Sparks
1995, Hydrobiologia (304) 209-220
We examined recent temporal trends in the abundance of fingernial clamsMusculium transversum (formerlySphaerium transversum) in the upper Mississippi River. Historical data on densities of fingernail clams were obtained from regional scientists and published literature. We also sampled benthos in six navigation pools in summer 1991, finding very...
Dicofol and DDT residues in lizard carcasses and bird eggs from Texas, Florida, and California
D.R. Clark, Edward L. Flickinger, Donald H. White, R. L. Hothem, A. A. Belisle
1995, Bulletin of Environmental Contamination and Toxicology (54) 817-824
Dicofol is an organochlorine agricultural pesticide used to control mites. The principal commercial dicofol product is known as Kelthane TM. More than 70% of dicofol product (about 3 million Ib or 1.4 million kg) sold annually in the U.S. is applied in California, Arizona, Texas, and Florida. Florida citrus and...
Baseline risk assessment for aquatic life for the Buffalo River, New York, Area of Concern
Dora R. Passino-Reader, Patrick L. Hudson, James P. Hickey
1995, Report
The Great Lakes National Program Office of the U.S. Environmental Protection Agency initiated the Assessment and Remediation of Contaminated Sediments (ARCS) program to address concerns of environmental degradation at 43 Areas of Concern in the Great Lakes. In our first report (Passino-Reader et al. 1992), we developed a generic...
Data on quantity and quality of water flowing in drainage systems of dry docks at Puget Sound Naval Shipyard, Bremerton, Washington, 1994
Edmund A. Prych
1995, Open-File Report 95-361
Data on the quantity and quality of ground water that drains into dry docks at the Puget Sound Naval Shipyard can be useful for planning environmental remediation work at the shipyard. Ground-water discharges into and total drain-water discharges from individual dry docks were computed from a single set of discharges...
Water resources data, New York, water year 1994. Volume 2. Long Island
A. G. Spinello, G. Pena-Cruz, K. McGrath, V. K. Eagen
1995, Water Data Report NY-94-2
Water resources data for the 1994 water year for New York consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This volume contains records for water discharge at 20 gaging...
Survival and population size estimation in raptor studies: A comparison of two methods
William R. Gould, Mark R. Fuller
1995, Journal of Raptor Research (29) 256-264
ABSTRACT.--The Jolly-Seber model is a capture-recapture model that can provide less-biased survival and population size estimates than those produced from simple counting procedures. Parameter estimation by simple counts and Jolly-Seber methods are based on certain assumptions that directly determine the validity of estimates. Evuluation of assumptions for parameter estimation is...
Locating waterfowl observations on aerial surveys
W.I. Butler, J.I. Hodges, R.A. Stehn
1995, Wildlife Society Bulletin (23) 148-154
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
Past and current trends of change in a dune prairie/oak savanna reconstructed through a multiple-scale history
K.L. Cole, R.S. Taylor
1995, Journal of Vegetation Science (6) 399-410
The history of a rapidly changing mosaic of prairie and oak savanna in northern Indiana was reconstructed using several methods emphasizing different time scales ranging from annual to millennial. Vegetation change was monitored for 8 yr using plots and for 30 yr using aerial photographs. A 20th century fire history...
A comparison of avian hematozoan epizootiology in two California coastal scrub communities
Paul E. Super, Charles van Riper III
1995, Journal of Wildlife Diseases (31) 447-461
Passerine birds within two California (USA) coastal scrub ecosystems, an island and a mainland site, were examined for hematozoa from 1984 to 1990. Island birds had a significantly lower hematozoan prevalence than mainland birds. This prevalence difference can be related to a lack...
Difference in the crab fauna of mangrove areas at a southwest Florida and a northeast Australia location: Implications for leaf litter processing
C.C. McIvor, T. J. Smith III
1995, Estuaries (18) 591-597
Existing paradigms suggest that mangrove leaf litter is processed primarily via the detrital pathway in forests in the Caribbean biogeographic realm whereas herbivorous crabs are relatively more important litter processors in the Indo-West Pacific. To test this hypothesis, we used pitfall traps to collect intertidal crabs to characterize the crab...
Impact of flooding on the densities of selected aquatic insects
A.C. Hendricks, L.D. Willis, C. Snyder
1995, Hydrobiologia (299) 241-247
Data from a four-year study of five aquatic insect species,Hydropsyche betteni, H. morosa, H. bronta, Isonychia bicolor, andEphoron leucon, were utilized to evaluate the impact of a 60-year flood and a few lesser floods. The survey began in August, 1984 and was terminated in October, 1987...
Can otolith microchemistry chart patterns of migration and habitat utilization in anadromous fishes?
D.H. Secor, A. Henderson-Arzapalo, P.M. Piccoli
1995, Journal of Experimental Marine Biology and Ecology (192) 15-33
Seasonal and ontogenetic patterns in estuarine and coastal migrations of anadromous fish species have important consequences to their survival, growth, recruitment, and reproduction. We tested the hypothesis that otolith (sagitta) microchemistry can document the environmental history of individual fish across an...
GIS for mapping waterfowl density and distribution from aerial surveys
W.I. Butler, R.A. Stehn, G.R. Balogh
1995, Wildlife Society Bulletin (23) 140-147
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
Migratory bird population changes in North Dakota
Lawrence D. Igl, Douglas H. Johnson
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
The status of migratory bird populations in North America has received increased attention in recent years. Much of this consideration has been on Neotropical migrants, especially those associated with eastern forests. The status of migratory bird populations in the Great Plains has received far less attention. During the past quarter-century,...
Preliminary results from the hydrodynamic element of the 1994 entrapment zone study
J.R. Burau, M. Stacey, J. W. Gartner
1995, Interagency Ecological Program Newsletter 12-17
This article discusses preliminary results from analyses of USGS hydrodynamic data collected as part of the 1994 Interagency Ecological Program entrapment zone study. The USGS took part in three 30-hour cruises and deployed instruments for measuring currents and salinity from April to June. This article primarily focuses on the analysis...
Water resources data, Maine, water year 1994
J.P. Nielsen, W.B. Higgins, R. G. Lippert
1995, Water Data Report ME-94-1
The Water Resources Division of the U.S. Geological Survey, in cooperation with State, Federal, and other local governmental agencies, obtains a large amount of data pertaining to the water resources of Maine each year. These data, accumulated during the many water years, constitute a valuable data base for developing an...
Water resources data, Louisiana, water year 1994
C.R. Garrison, W.M. Lovelace, P.A. Montgomery
1995, Water Data Report LA-94-1
Water resources data for the 1994 water year for Louisiana consists of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground water. This report contains records for water discharge at 64 gaging stations;...
Water resources data, Massachusetts and Rhode Island, water year 1994
R. A. Gadoury, R.S. Socolow, G.G. Girouard, L.R. Ramsbey
1995, Water Data Report MA-RI-94-1
Water resources data for the 1994 water year for Massachusetts and Rhode Island consists of records of stage, discharge, and water quality of streams; contents of lakes and reservoirs; and ground-water levels. This report contains discharge records for 83 gaging stations, month end contents of 4 lakes and reservoirs, water...
Water resources data, Kentucky, water year 1994
D.L. McClaim, F.D. Byrd, A.C. Brown
1995, Water Data Report KY-94-1
Water resources data for the 1994 water year for Kentucky consist of records of stage, discharge, and water quality of streams and lakes, and water levels of wells. This report includes daily discharge records for 98 stream-gaging stations and stage at 3 stations. It also includes water-quality data for 36...
State Soil Geographic (STATSGO) Data Base for the Conterminous United States
Gregory E. Schwarz, R. B. Alexander
1995, Open-File Report 95-449
USSOILS is an Arc 7.0 coverage containing hydrology-relevant information for 10,498 map units covering the entire conterminous United States. The coverage was compiled from individual State coverages contained in the October 1994 State Soil Geographic (STATSGO) Data Base produced on CD-ROM. The geo-dataset USSOILS.PAT relates (on the basis of a map unit identifier) the...
