Lake trout rehabilitation in Lake Ontario
Joseph H. Elrod, Robert O’Gorman, Clifford P. Schneider, Thomas H. Eckert, Ted Schaner, James N. Bowlby, Larry P. Schleen
1995, Journal of Great Lakes Research (21) 83-107
Attempts to maintain the native lake trout (Salvelinus namaycush) population in Lake Ontario by stocking fry failed and the species was extirpated by the 1950s. Hatchery fish stocked in the 1960s did not live to maturity because of sea lamprey (Petromyzon marinus) predation and incidental commercial harvest. Suppression of sea...
Size limitation on zebra mussels consumed by freshwater drum may preclude the effectiveness of drum as a biological controller
John R. P. French III, Joy G. Love
1995, Journal of Freshwater Ecology (10) 379-383
The septa lengths of bivalve shells were used to estimate shell lengths of the largest zebra mussels (Dreissena polymorpha) crushed and consumed by freshwater drum (Aplodinotus grunniens) to determine if size limitation could preclude the effectiveness of drum as a biological controller of the zebra mussel. We examined gut samples...
Hatching, dispersal, and bathymetric distribution of age-0 wild lake trout at the Gull Island Shoal complex, Lake Superior
Charles R. Bronte, James H. Selgeby, James H. Saylor, Gerald S. Miller, Neal R. Foster
1995, Journal of Great Lakes Research (21) 233-245
We studied age-0 lake trout (Salvelinus namaycush) associated with spawning and nursery areas of the Gull Island Shoal complex in western Lake Superior. Post-emergent age-0 lake trout were captured on rocky spawning substrate with a 3-m beam trawl and at the nursery area with a bottom trawl from June to...
Density-independent survival of wild lake trout in the Apostle Islands area of Lake Superior
Charles R. Bronte, Stephen T. Schram, James H. Selgeby, Bruce L. Swanson
1995, Journal of Great Lakes Research (21) 246-252
The lake trout (Salvelinus namaycush) stock at Gull Island Shoal in western Lake Superior was one of only a few stocks of lean lake trout in the Great Lakes that survived overfishing and predation by the sea lamprey (Petromyzon marinus). Since the mid 1960s, the abundance of wild recruits measured...
Lake trout restoration in the Great Lakes: stock-size criteria for natural reproduction
James H. Selgeby, Charles R. Bronte, Edward H. Brown, Michael J. Hansen, Mark E. Holey, Jan P. VanAmberg, Kenneth M. Muth, Daniel B. Makauskas, Patrick Mckee, David M. Anderson, C. Paola Ferreri, Stephen T. Schram
1995, Journal of Great Lakes Research (21) 498-504
We examined the question of whether the lake trout restoration program in the Great Lakes has developed brood stocks of adequate size to sustain natural reproduction. Stock size criteria were developed from areas of the Great Lakes where natural reproduction has been successful (defined as detection of age-1 or older...
Lake trout rehabilitation in Lake Huron
Randy L. Eshenroder, N. Robert Payne, James E. Johnson, Charles Bowen II, Mark P. Ebener
1995, Journal of Great Lakes Research (21) 108-127
Efforts to restore lake trout (Salvelinus namaycush) in Lake Huron after their collapse in the 1940s were underway in the early 1970s with completion of the first round oflampricide applications in tributary streams and the stocking of several genotypes. We assess...
Comparison of lake trout-egg survival at inshore and offshore and shallow-water and deepwater sites in Lake Superior
Randy L. Eshenroder, Charles R. Bronte, James W. Peck
1995, Journal of Great Lakes Research (21) 313-322
We incubated lake trout (Salvelinus namaycush) eggs over winter at shallow (10 m) and deep locations (20 m) on Gull Island Shoal, Lake Superior; at a shallow-water (10 m) site off the mainland (Bark Point); and in flowing Great Lakes water at two laboratories. Survival to hatch was significantly higher...
Growth and survival of newly parasitic sea lampreys at representative winter temperatures
William D. Swink
1995, Transactions of the American Fisheries Society (124) 380-386
Larval sea lampreys Petromyzon marinus begin to metamorphose into their parasitic phase in July and migrate to the Great Lakes either in autumn, when they immediately feed on fish, or in spring after overwintering in the stream substrate. Survival and growth of newly parasitic autumn migrants (mean weight, 4.18 g) differed significantly...
Effect of gear selectivity on recommended allowable harvest with application to the Lake Erie yellow perch fishery
Charles P. Madenjian, Philip A. Ryan
1995, North American Journal of Fisheries Management (15) 79-83
Because the 57-mm-mesh gill net is the predominant gear in the Lake Eric fishery for yellow perch Perca flavescens, gear selectivity is an important factor operating in that fishery. The selectivity curve for age-groups 2–6 is roughly symmetrical with peak vulnerability at age 4; younger and older perch are substantially...
Differential effects of coyotes and red foxes on duck nest success
Marsha A. Sovada, A. Sargeant, J.W. Grier
1995, Journal of Wildlife Management (59) 1-9
Low recruitment rates prevail among ducks in the Prairie Pothole Region of North America, primarily because of high nest depredation rates. The red fox (Vulpes vulpes) is a major predator of duck eggs, but fox abundance is depressed by coyotes (Canis latrans). We tested the hypothesis that nest success of...
Introduction to the Proceedings of the 1994 International Conference on Restoration of Lake Trout in the Laurentian Great Lakes
James H. Selgeby
1995, Journal of Great Lakes Research (21) 1-2
Lake trout (Salvelinus namaycush) restoration in the Great Lakes began in the 1950s when stocking of artificially propagated lake trout was coupled with the first attempts at sea lamprey (Petromyzon marinus) control. A major milestone in the restoration process was recorded when a selective sea lamprey larvicide was identified in...
Availability of lake trout reproductive habitat in the Great Lakes
Thomas A. Edsall, Gregory W. Kennedy
1995, Journal of Great Lakes Research (21) 290-301
A decades-long program to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the four lower Great Lakes produced excellent fisheries supported by stocked fish. These fish spawned widely and small numbers of their offspring were collected intermittently from Lakes Michigan, Huron, and Ontario, but no self-sustaining stocks were established....
Planktivory by alewife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax) on microcrustacean zooplankton and dreissenid (Bivalvia: Dreissenidae) veligers in southern Lake Ontario
Edward L. Mills, Robert O’Gorman, Edward F. Roseman, Connie Adams, Randall W. Owens
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 925-935
The objective of this study was to describe the diet of young-of-the-year and adult alewife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax) in nearshore waters coincident with the colonization of Lake Ontario by Dreissena. Laboratory experiments and field observations indicated that alewife and rainbow smelt consumed dreissenid veligers and that the...
Use of a simulation model to reconstruct PCB concentrations in prey of Lake Ontario lake trout
Charles P. Madenjian, Michael D. Whittle, Joseph H. Elrod, Robert O’Gorman, Randall W. Owens
1995, Environmental Science & Technology (29) 2610-2615
No abstract available....
Removal of algae by the zebra mussel (Dreissena polymorpha) population in western Lake Erie: a bioenergetics approach
Charles P. Madenjian
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 381-390
A bioenergetics model for growth of a zebra mussel (Dreissena polymorpha) individual was verified with observations on zebra mussel growth in western Lake Erie. The bioenergetics model was then applied to the zebra mussel population in the western basin of Lake Erie to estimate the removal of phytoplankton by mussels....
Waterbird predation on fish in western Lake Erie: a bioenergetics model application
Charles P. Madenjian, Steven W. Gabrey
1995, Condor (97) 141-153
To better understand the role of piscivorous waterbirds in the food web of western Lake Erie, we applied a bioenergetics model to determine their total fish consumption, The important nesting species included the Herring Gull (Larus argentatus), Ring-billed Gull (L. delawarensis), Double-crested Cormorant (Phalacrocorax auritus), Great Blue Heron (Ardea herodias),...
Survival of lake trout eggs on reputed spawning grounds in Lakes Huron and Superior: In situ incubation, 1987-1988
Bruce A. Manny, Thomas A. Edsall, James W. Peck, Gregory W. Kennedy, Anthony M. Frank
1995, Journal of Great Lakes Research (21) 302-312
Lake trout reproduce widely in Lake Superior but little in Lake Huron. We examined whether survival of lake trout eggs and fry in either lake was reduced by physical disturbances and swim-up mortality. Eggs were collected from feral lake trout in Lake Superior and placed in 108 plastic incubators. A...
Comparison of flank margin cave development on San Salvador island, Bahamas, and Isla de Mona, Puerto Rico
J. Mylroie, J.L. Carew, E.F. Frank, Matthew C. Larsen
M. Boardman, editor(s)
1995, Conference Paper, Proceeding of the 7th Symposium on the Geology of the Bahamas
San Salvador Island, Bahamas is a 161 Km2 tectonically stable late Quaternary carbonate island located 600 km east-southeast of Miami FL. San Salvador contains numerous flank margin caves (phreatic karst features) that developed primarily in late Pleistocene eolianites. These caves developed during a short time in versy small fresh-water lenses....
USGS coastal studies in the northeastern Gulf of Mexico
Guy R. Gelfenbaum
Allan J. Clarke, editor(s)
1995, Conference Paper, Northeastern Gulf of Mexico physical oceanography workshop: proceedings of a workshop held in Tallahassee, Florida, April 5-7, 1994
No abstract available....
United States Geological Survey, programs in Delaware
Water Resources Division, U.S. Geological Survey
1995, Fact Sheet 008-95
National Research Program of the U.S. Geological Survey, Water Resources Division fiscal year 1994
Martha L. Nichols, editor(s)
1995, Open-File Report 95-356
This report provides current information about the National Research Program (NRP) of the U.S. Geological Survey's Water Resources Division (WRD) during fiscal year 1994. Organized by NRP's six research disciplines ecology, geomorphology and sediment transport, ground-water chemistry, ground-water hydrology, surface-water chemistry, and surface-water hydrology the volume contains a summary of...
Cartographic and digital standard for geologic map information, Part C: Principles, content, symbols, colors, patterns, and codes
Water Resources Division, U.S. Geological Survey
1995, Open-File Report 95-525-C
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...
Spectral response of greenhouse-grown soybean and loblolly pine to varying concentrations of arsenic
David A. Mouat, J. Lancaster, N.M. Milton
1995, Open-File Report 95-581
Water resources data, Oregon, water year 1994
L.E. Hubbard, T.A. Herrett, R.L. Kraus, G.P. Ruppert, M.L. Courts
1995, Water Data Report OR-94-1
No abstract available....
