A Benthic Community Index for streams in the Northern Lakes and Forests Ecoregion
Jason T. Butcher, Paul M. Stewart, Thomas P. Simon
2003, Ecological Indicators (3) 181-193
Encompassing the northern glaciated section of the Midwest United States, the Northern Lakes and Forests Ecoregion is characterized by mixed conifer and deciduous forests and wetlands. Sites were randomly selected in the ecoregion using the Environmental Protection Agency's Environmental Monitoring and Assessment Program designed to develop an index of...
Effects of two classification strategies on a Benthic Community Index for streams in the Northern Lakes and Forests Ecoregion
Jason T. Butcher, Paul M. Stewart, Thomas P. Simon
2003, Ecological Indicators (3) 195-202
Ninety-four sites were used to analyze the effects of two different classification strategies on the Benthic Community Index (BCI). The first, a priori classification, reflected the wetland status of the streams; the second, a posteriori classification, used a bio-environmental analysis to select classification variables. Both classifications were examined by measuring...
Egg-to-fry survival of two strains of Atlantic salmon (Salmo salar) in stream incubators under laboratory conditions
James H. Johnson
2003, Journal of Freshwater Ecology (18) 499-500
Egg-to-fry survival of two strains of Atlantic salmon (Salmo salar) was evaluated under laboratory conditions in two commercial stream egg incubators. The survival was also examined based on egg developmental stage (i.e., green eggs, eyed egggs, advanced eggs). There was no significant difference in survival of eggs in the Jordan-Scotty...
Techniques and methods for estimating abundance of larval and metamorphosed sea lampreys in Great Lakes tributaries, 1995 to 2001
Jeffrey W. Slade, Jean V. Adams, Gavin C. Christie, Douglas W. Cuddy, Michael F. Fodale, John W. Heinrich, Henry R. Quinlan, Jerry G. Weise, John W. Weisser, Robert J. Young
2003, Journal of Great Lakes Research (29) 137-151
Before 1995, Great Lakes streams were selected for lampricide treatment based primarily on qualitative measures of the relative abundance of larval sea lampreys, Petromyzon marinus. New integrated pest management approaches required standardized quantitative measures of sea lamprey. This paper evaluates historical larval assessment techniques and data and describes how new...
Effects of repeated TFM applications on riffle macroinvertebrate communities in four Great Lakes tributaries
John W. Weisser, Jean V. Adams, Richard J. Schuldt, Gregg A. Baldwin, Dennis S. Lavis, Jeffrey W. Slade, John W. Heinrich
2003, Journal of Great Lakes Research (29) 552-565
As part of the sea lamprey control program in the Great Lakes, a suite of about 150 sea lamprey producing streams have been regularly treated with the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) every 3 to 5 years since 1958. State, provincial, and tribal agencies in the basin supported the use of TFM...
Ecological monitoring for assessing the state of the nearshore and open waters of the Great Lakes
Melanie A. Neilson, D. Scott Painter, Glenn Warren, Ronald A. Hites, Ilora Basu, D.V. Chip Weseloh, D. Michael Whittle, Gavin Christie, Richard Barbiero, Marc Tuchman, Ora E. Johannsson, Thomas F. Nalepa, Thomas A. Edsall, Guy Fleischer, Charles Bronte, Stephen B. Smith, Paul C. Baumann
2003, Environmental Monitoring and Assessment (88) 103-117
The Great Lakes Water Quality Agreement stipulates that the Governments of Canada and the United States are responsible for restoring and maintaining the chemical, physical and biological integrity of the waters of the Great Lakes Basin Ecosystem. Due to varying mandates and areas of expertise, monitoring to assess progress towards...
The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes region: An update
Douglas R. Spencer, Patrick L. Hudson
2003, Journal of Great Lakes Research (29) 89-104
An updated oligochaete species list for the Great Lakes region is provided. The list was developed through the reexamination of the taxa reported in a previous report in 1980, addition of new taxa or records collected from the region since 1980, and an update of taxonomy commensurate with systematic and...
Classifying sea lamprey marks on Great Lakes lake trout: observer agreement, evidence on healing times between classes and recommendations for reporting of marking statistics
Mark P. Ebener, James R. Bence, Roger A. Bergstedt, Katherine M. Mullet
2003, Journal of Great Lakes Research (29) 283-296
In 1997 and 1998 two workshops were held to evaluate how consistent observers were at classifying sea lamprey (Petromyzon marinus) marks on Great Lakes lake trout (Salvelinus namaycush) as described in the King classification system. Two trials were held at each workshop, with group discussion between trials. Variation in counting...
Classification of lentic habitat for sea lamprey (Petromyzon marinus) larvae using a remote seabed classification device
Michael F. Fodale, Charles R. Bronte, Roger A. Bergstedt, Douglas W. Cuddy, Jean V. Adams
2003, Journal of Great Lakes Research (29) 190-203
Lentic populations of larval sea lampreys (Petromyzon marinus) are suspected of being a major source of recruitment to parasitic stocks in some areas of the Great Lakes, and methods are needed to estimate habitat and population sizes. A deepwater electroshocker has been used to quantitatively assess larval sea lamprey populations...
Evaluation of strategies for the release of male sea lampreys (Petromyzon marinus) in Lake Superior for a proposed sterile-male-release program
C. A. Kaye, J.W. Heinrich, J.H. Genovese, L.H. Hanson, R.B. McDonald, J.W. Slade, W.D. Swink
2003, Journal of Great Lakes Research (29) 424-434
Successful implementation of a sea lamprey (Petromyzon marinus) control technique that uses sterilized males to reduce reproduction presently depends on the importation of large numbers of males outside of the target population. Strategies were examined for releasing male sea lampreys from Lakes Michigan and Huron into the Lake Superior spawning...
[Book review] Prairie Wetland Ecology--The Contribution of the Marsh Ecology Research Program, edited by H. R. Murkin, A. G. van der Valk, and W. R. Clark
Gary L. Krapu
2003, Great Plains Research (13) 162-163
Review of: Prairie Wetland Ecology: The Contribution of the Marsh Ecology Research Program by Henry R. Murkin, Arnold G. van der Valk, and William R. Clark, eds....
Comparative alteration mineral mapping using visible to shortwave infrared (0.4-2.4 μm) Hyperion, ALI, and ASTER imagery
B.E. Hubbard, J.K. Crowley, D. R. Zimbelman
2003, IEEE Transactions on Geoscience and Remote Sensing (41) 1401-1410
Advanced Land Imager (ALI), Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), and Hyperion imaging spectrometer data covering an area in the Central Andes between Volcan Socompa and Salar de Llullaillaco were used to map hydrothermally altered rocks associated with several young volcanic systems. Six ALI channels in the visible...
Evidence for chlorine recycling - Hydrosphere, biosphere, atmosphere - In a forested wet zone on the Canadian Shield
G.M. Milton, J.C.D. Milton, S. Schiff, P. Cook, T.G. Kotzer, L.D. Cecil
2003, Applied Geochemistry (18) 1027-1042
The ability to measure environmental levels of 36Cl by Accelerator Mass Spectrometry and 3H by 3He-ingrowth Mass Spectrometry has made it possible to use the pulses of these two isotopes released into the atmosphere during nuclear weapons testing as tracers of Cl and water movement in soils and groundwater. The...
Interactions of an insecticide, herbicide, and natural stressors in amphibian community mesocosms
M.D. Boone, S.M. James
2003, Ecological Applications (13) 829-841
Amphibians developing in wetlands embedded within or near agricultural lands may frequently encounter chemical mixtures. The objectives of our study were to determine the effects that post-application concentrations of an insecticide (carbaryl) and an herbicide (atrazine) have on body mass, development, and survival of two anuran species (southern leopard frog,...
New way of processing near-surface magnetic data: The utility of the comprehensive model of the magnetic field
D. Ravat, T.G. Hildenbrand, W. Roest
2003, The Leading Edge (22) 784-785
An overview is given of examples showing the utility of the Comprehensive Model (CM) approach in the processing of near-surface magnetic anomalies. Effectiveness of CM depends on the spatial and temporal matching of the main and external field variations that it attempts to approximate. Hence, data distribution as well as...
Determination of antibiotic residues in manure, soil, and surface waters
T. Christian, R.J. Schneider, H.A. Farber, D. Skutlarek, M. T. Meyer, H.E. Goldbach
2003, Acta Hydrochimica et Hydrobiologica (31) 36-44
In the last years more and more often detections of antimicrobially active compounds (“antibiotics”) in surface waters have been reported. As a possible input pathway in most cases municipal sewage has been discussed. But as an input from the realm of agriculture is conceivable as well,...
Cooper's hawk (Accipter cooperii)
Charles J. Henny
David B. Marshall, Matthew G. Hunter, Alan Contreras, editor(s)
2003, Book chapter, Birds of Oregon: A general reference
No abstract available....
The American Avocet (Recurvirostra americana)
P.M. Sanzenbacher, Susan M. Haig
David B. Marshall, Matthew G. Hunter, Alan Contreras, editor(s)
2003, Book chapter, Birds of Oregon: A general reference
No abstract available....
The Killdeer (Charadrius vociferus)
P.M. Sanzenbacher, Susan M. Haig
David B. Marshall, Matthew G. Hunter, Alan Contreras, editor(s)
2003, Book chapter, Birds of Oregon: A general reference
No abstract available....
Estimates of global cyanobacterial biomass and its distribution
Ferran Garcia-Pichel, Jayne Belnap, Susanne Neuer, Ferdinand Schanz
2003, Algological Studies (109) 213-227
We estimated global cyanobacterial biomass in the main reservoirs of cyanobacteria on Earth: marine and freshwater plankton, arid land soil crusts, and endoliths. Estimates were based on typical population density values as measured during our research, or as obtained from literature surveys, which were then coupled with data on global...
Elemental chemistry of four lichen species from the Apostle Islands, Wisconsin, 1987, 1995 and 2001
J. P. Bennett, C. M. Wetmore
2003, Science of the Total Environment (305) 77-86
Four lichen species sampled three times over a 15-year time span at four of the Apostle Islands, Wisconsin were analyzed for 16 chemical elements in order to determine time trends and spatial patterns. Factor analyses of the data revealed that elements associated with soils (Al, Cr, Fe, Na, Ni and...
Starvation resistance in lake trout fry
Thomas A. Edsall, Bruce A. Manny, Gregory W. Kennedy
2003, Journal of Great Lakes Research (29) 375-382
Newly hatched fry were acclimated to 7 or 12°C and either fed daily (controls) or denied food for varying lengths of time and then fed daily until the end of the study (day 91 at 7°C and day 43 at 12°C). Growth was reduced by delays in the onset of feeding of 27 or...
Current versus future reproduction: an experimental test of parental investment decisions using nest desertion by mallards (Anas platyrhynchos)
Joshua T. Ackerman, J.M. Eadie
2003, Behavioral Ecology and Sociobiology (54) 264-273
Past investment in offspring may be important in determining a parent's ability to reproduce in the future and, hence, should affect the relative value of current offspring. However, there have been surprisingly few clear tests of whether animals actually adjust parental care in response to diminished opportunities for future reproduction....
A multi-level pore-water sampler for permeable sediments
J.B. Martin, K.M. Hartl, D.R. Corbett, P.W. Swarzenski, J.E. Cable
2003, Journal of Sedimentary Research (73) 128-132
The construction and operation of a multi-level piezometer (multisampler) designed to collect pore water from permeable sediments up to 230 cm below the sediment-water interface is described. Multisamplers are constructed from 1 1/2 inch schedule 80 PVC pipe. One-quarter-inch flexible PVC tubing leads from eight ports at variable depths to a 1 1/2 inch tee fitting at the top of the PVC pipe....
Sampling designs for carnivore scent-station surveys
G.A. Sargeant, Douglas H. Johnson, W. E. Berg
2003, Journal of Wildlife Management (67) 289-299
Scent stations usually are deployed in clusters to expedite data collection and increase the number of stations that can be operated for a given cost. Presumed benefits of cluster sampling may not be realized, however, unless cluster sizes are chosen with respect to sampling variation within and among clusters. To encourage and facilitate the use...
