Publications
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Spatiotemporal patterns in trophic niche overlap among five salmonines in Lake Michigan, USA
Native lake trout and introduced Chinook salmon, coho salmon, steelhead, and brown trout are major predators in Lake Michigan’s complex ecosystem and collectively support a valuable recreational fishery, but declines in their primary prey, alewife, have raised ecological and management concerns about competition and prey allocation. We applied niche overlap analysis to evaluate competition among s
Authors
Matthew S. Kornis, David B. Bunnell, Heidi K. Swanson, Charles R. Bronte
How "simple" methodological decisions affect interpretation of population structure based on reduced representation library DNA sequencing: A case study using the lake whitefish
Reduced representation (RRL) sequencing approaches (e.g., RADSeq, genotyping by
sequencing) require decisions about how much to invest in genome coverage and sequencing
depth, as well as choices of values for adjustable bioinformatics parameters. To empirically
explore the importance of these “simple” methodological decisions, we generated two
independent sequencing libraries for the same 142 indi
Authors
Carly F. Graham, Douglas R. Boreham, Richard G. Manzon, Wendylee Stott, Joanna Y. Wilson, Christopher M. Somers
Behavioral responses of sea lamprey to varying application rates of a synthesized pheromone in diverse trapping scenarios
Use of the first fish pheromone biopesticide, 3-keto petromyzonol sulfate (3kPZS) in sea lamprey (Petromyzon marinus) control requires an understanding of both how the amount 3kPZS applied to a trap relates to catch, and how that relationship varies among stream types. By conducting 3kPZS dose-response experiments over two years and across six varied trapping contexts, we conclude (1) that 3kPZS a
Authors
Nicholas S. Johnson, Sean A. Lewandoski, Bethany Alger, Lisa M. O'Connor, Gale Bravener, Peter J. Hrodey, Belinda Huerta, Jessica Barber, Weiming Li, C. Michael Wagner, Michael J Siefkes
RAPTURE (RAD capture) panel facilitates analyses characterizing sea lamprey reproductive ecology and movement dynamics
Genomic tools are lacking for invasive and native populations of sea lamprey (Petromyzon marinus). Our objective was to discover single nucleotide polymorphism (SNP) loci to conduct pedigree analyses to quantify reproductive contributions of adult sea lampreys and dispersion of sibling larval sea lampreys of different ages in Great Lakes tributaries. Additional applications of data were explored u
Authors
Nicholas Sard, Seth Smith, Jared Homola, Jeannette Kanefsky, Gale Bravener, Jean V. Adams, Christopher Holbrook, Peter J. Hrodey, Kevin Tallon, Kim T. Scribner
Phosphorus, nitrogen and dissolved organic carbon fluxes from sediments in freshwater rivermouths entering Green Bay (Lake Michigan; USA)
Transitional areas between ecosystem types are often active biogeochemically due to resource limitation changes. Lotic-to-lentic transitions in freshwaters appear active biogeochemically, but few studies have directly measured nutrient processing rates to assess whether processing within the rivermouth is important for load estimates or the local communities. We measured oxic fluxes of inorganic n
Authors
James H. Larson, William F. James, Faith A. Fitzpatrick, Paul C. Frost, Mary Anne Evans, Paul C. Reneau, Marguerite A. Xenopoulos
Evaluating catchability in a large-scale gillnet survey using hydroacoustics: Making the case for coupled surveys
Abundance estimates facilitate successful fisheries management. Fisheries agencies often monitor abundance through fishery independent standardized protocols generating relative measures such as catch-per-unit-effort (CPUE), where CPUE is assumed proportional to true abundance. Unfortunately, this assumption is rarely met as fish behavior and environmental conditions influence catchability and sam
Authors
Mark R. DuFour, Song S. Qian, Christine M Mayer, Christopher Vandergoot
Quantifying microplastics in Indiana’s Lake Michigan watershed and submerged aquatic vegetation
Environmental breakdown of plastics produces synthetic microfibers, a class of microplastics that are most prevalent in surface waters. A main source of these pollutants is wastewater treatment plants which discharge into surface waters, including those that flow into Lake Michigan. Microplastics can settle into aquatic sediment or exist for lengths of time in the swash zone of the lakes; they can
Authors
Julie R. Peller, Meredith B. Nevers, Muruleedhara Byappanahalli, Mary Anne Evans
Status and trends of pelagic prey fish in Lake Huron, 2018
Scientists from the U.S. Geological Survey’s Great Lakes Science Center conducted integrated acoustic and mid-water trawl surveys of Lake Huron annually from 2004-2018. The 2018 survey was conducted during September and included transects in Lake Huron’s main basin, Georgian Bay, and North Channel. Mean lake-wide pelagic fish density was 1532 fish/ha and mean pelagic fish biomass was 4151 g/ha in
Authors
Timothy P. O'Brien, Steve A. Farha, David Warner, Peter C. Esselman, Kristy Phillips, Steven Lenart, Chris Olds
Status and trends in the Lake Superior fish community, 2019
The Lake Superior fish community was sampled in 2019 with daytime bottom trawls at 76 nearshore and 35 offshore stations distributed throughout the lake. In the nearshore zone, 25,131 fish from 24 species or morphotypes were collected. The number of species collected at nearshore stations ranged from 0 to 15, with a mean of 5.6 and median of five. Nearshore mean biomass was 5.7 kg/ha which was sim
Authors
Mark Vinson, Lori M. Evrard, Owen Gorman, Caroline Lynn Rosinski, Daniel Yule
The effect of sediment cover and female characteristics on the hatching success of walleye
Natural and anthropogenic sources of sedimentation have the potential to degrade spawning habitat and negatively affect incubating fish embryos. Walleye Sander vitreus are lithophilic broadcast spawners that use specific spawning habitats that are vulnerable to degradation caused by deposition of suspended sediments. We measured the effect of different types of sediment cover on hatching success o
Authors
Alex Gatch, S.K. Koenigbauer, Edward F. Roseman, T. Hook
Potential changes to the biology and challenges to the management of invasive sea lamprey Petromyzon marinus in the Laurentian Great Lakes due to climate change
Control programs are implemented to mitigate the damage caused by invasive species worldwide. In the highly invaded Great Lakes, the climate is expected to become warmer with more extreme weather and variable precipitation, resulting in shorter iced‐over periods and variable tributary flows as well as changes to pH and river hydrology and hydrogeomorphology. We review how climate change influences
Authors
Robert J. Lennox, Gale A. Bravener, Hsien-Yung Lin, Charles P. Madenjian, Andrew M. Muir, Christina K. Remucal, Kelly F. Robinson, Andrew M. Rous, Michael J. Siefkes, Michael P. Wilkie, Daniel P. Zielinski, Steven J. Cooke
Sequence analysis and acoustic tracking individual lake sturgeon identifies multiple patterns of river-lake habitat use
Understanding the spatial ecology of sturgeon (Acipenseridae) has proven to be a challenge due to the life history characteristics of these fish, especially their long life span, intermittent spawning, and long‐distance migrations. Within the Huron‐Erie Corridor (HEC) of the Laurentian Great Lakes, habitat use of 247 lake sturgeon (Acipenser fulvescens ) was monitored over a three‐year period (201
Authors
Scott F. Colborne, Darryl W. Hondorp, Christopher Holbrook, Michael R. Lowe, James C. Boase, Justin A. Chiotti, Todd C. Wills, Edward F. Roseman, Charles C. Krueger