Publications
Welcome to the Great Lakes Science Center's Publications page.
Filter Total Items: 2571
Assessing the impact of charr research past, present, and future
The 9th International Charr Symposium convened on 18–21 June 2018, in Duluth, Minnesota, USA to gather scientists with an interest in charr biology and management from the entire geographical range of the genus Salvelinus. The symposium was attended by 169 individuals from six countries, and included 99 oral and 32 poster presentations, 28 of which were published in the ensuing proceedings. Topic
Authors
Michael J. Hansen, Charles C. Krueger, Andrew M. Muir, Anders Klemetsen, Michael Power
Growth and mortality of invasive Flathead Catfish in the tidal James River, Virginia
Invasive species are a major threat to biodiversity of native fishes in North America. In Atlantic coastal rivers of the United States, large catfishes introduced from the Gulf of Mexico drainages have become established and contributed to native species declines. Flathead Catfish Pylodictis olivaris were introduced to the Chesapeake Bay drainage in the 1960s and 1970s in the James and Potomac riv
Authors
Corbin D. Hilling, Aaron J. Bunch, Jason A. Emmel, Joseph Schmitt, Donald J. Orth
Age truncation of alewife in Lake Michigan
Empirical evidence has shown increased variability in harvest and recruitment of exploited fish populations, which can result directly from exploitation or indirectly from interactions between external drivers and the internal dynamics of age-structured populations. We investigated whether predation in a freshwater system could affect a prey fish population, in the same way fishing affects targete
Authors
T. Vidal, Brian J. Irwin, Charles P. Madenjian, S. J. Wenger
Diel feeding behavior in a partially migrant Mysis population: A benthic-pelagic comparison
Populations that exhibit partial migration include migrants and non-migrants. For benthic-pelagic organisms that exhibit partial diel vertical migration (PDVM), migrants and non-migrants spend different amounts of time in benthic and pelagic foraging arenas over a diel cycle. For example, mysids exhibit PDVM and can feed on benthic and pelagic resources. Migratory individuals are assumed to underg
Authors
Brian O'Malley, Jason D. Stockwell
Spatiotemporal variability in energetic condition of alewife and round goby in Lake Michigan
Pelagic-oriented alewife (Alosa pseudoharengus) and benthic-oriented round goby (Neogobius melanostomus) are two important prey fishes in the Laurentian Great Lakes. In 2015, we evaluated their seasonal total energy (TE) across nine Lake Michigan transects. Round goby contained at least 48% more kilojoules of TE than alewife of equal length during spring and summer. TE varied spatially for both sp
Authors
David Bunnell, Steven A. Pothoven, Patricia Dieter, Lauren A. Eaton, David Warner, Ashley K. Elgin, Lyuba E. Burlakova, Alexander Y. Karatayev
First examination of diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the U.S.
Black carp (Mylopharyngodon piceus) were imported to the U.S. in the 1970s to control snails in aquaculture ponds and have since escaped from captivity. The increase in captures of wild fish has raised concerns of risk to native and imperiled unionid mussels given previous literature classified this species a molluscivore. We acquired black carp from commercial fishers and biologists, and examined
Authors
Barry C. Poulton, Patrick Kroboth, George Aiken, Duane Chapman, J. Bailey, Stephen E. McMurray, John S. Faiman
Sharp savanna-forest transitions in the Midwest followed environmental gradients but are absent from the modern landscape
Historically, closed eastern forests transitioned into open savannas and prairies in the US Midwest, but this transition is poorly understood. To investigate the eastern boundary of the prairie-forest ecotone, we conducted a case study of historic and modern vegetation patterns of the Yellow River watershed in northwest Indiana. Historic vegetation came from the Public Land Survey notes collected
Authors
Caitlin M. Broderick, Kelly A Heilman, Tamatha Patterson, Jody Peters, Jason S. McLachlan
First record of the non-indigenous parasitic copepod Neoergasilus japonicus (Harada, 1950) in the Lake Ontario Watershed: Oneida Lake, New York
Four specimens of the Asiatic parasitic copepod Neoergasilus japonicus (Harada, 1930) were collected from Oneida Lake, New York in September 2018; one specimen was from a white sucker Catostomus commersonii, another from a green sunfish Lepomis cyanellus, and two from a bluegill Lepomis macrochirus. The four adult female specimens were found attached to the base of the gills of their respective ho
Authors
Chris C. Marshall, Patrick Hudson, J. Randy Jackson, Joe K. Connolly, Jim M Watkins, Lars G. Rudstam
Densities, diets, and growth rates of larval Alewife and Bloater in a changing Lake Michigan ecosystem.
Variability in abiotic and biotic factors during larval stages has profound impacts on fish recruitment. In Lake Michigan, where the composition of lower trophic levels has undergone considerable changes in the past decade, managers are concerned that fish recruitment could be negatively affected. We hypothesized that spatial variation in Lake Michigan larval fish density and growth can be explain
Authors
Drew E Eppehimer, David Bunnell, Patricia Dieter, David Warner, Lauren A. Eaton, David J Wells, Edward S. Rutherford
Review: Endophytic microbes and their potential applications in crop management
Endophytes are microbes (mostly bacteria and fungi) present in plants. Endophytic microbes are often functional in that they may carry nutrients from the soil into plants, modulate plant development, increase stress tolerance of plants, suppress virulence in pathogens, increase disease resistance in plants, and suppress development of competitor plant species. Endophytic microbes have been shown:
Authors
James F. White, Kathryn L. Kingsley, Matthew T. Elmore, Satish Kumar Verma, Surendra K Gond, Kurt P. Kowalski
Subsurface water piping prevents meromixis in a deep volcanic crater lake (Dominica, West Indies)
Boeri Lake—a small (3.6 ha) but deep (39.6 m) crater lake on Morne Micotrin in Dominica, West Indies—presents a limnological enigma; it exhibits strong morphometric and circumstantial evidence for meromixis, yet it is not stratified. We tested the hypothesis that water seepage from Boeri Lake overcomes morphometric drivers of stratification and prevents the onset of meromixis. We compared water ch
Authors
Bryan M. Maitland, Brian O'Malley, Donald J. Stewart
State of lake ecosystem conference sub Indicator: Prey fish
Overall Assessment
Status: Fair
Trends
10-Year Trend: Unchanging
Long-term Trend (1973-2017): Undetermined
Rationale: Great Lakes prey fish community status remains ”Fair” based on diversity and percent native species, but individual lake status varied. Both diversity and percent native metrics were classified as “Good” in Lake Superior, but “Poor” in Lake Ontario (Table 1). Lakes Huron and Mich
Authors
Brian C. Weidel