Charles P Madenjian
Science and Products
Quantifying the Impacts of Climate Change on Fish Growth and Production to Enable Sustainable Management of Diverse Inland Fisheries
Fisheries managers in Midwestern lakes and reservoirs are tasked with balancing multiple management objectives to help maintain healthy fish populations across a landscape of diverse lakes. As part of this, managers monitor fish growth and survival. Growth rates in particular are indicators of population health, and directly influence the effectiveness of regulations designed to protect...
Forecasting Climate Change Induced Effects on Recreational and Commercial Fish Populations in the Great Lakes
Great Lakes fishery managers and stakeholders have little information regarding how climate change could affect the management and conservation of fish populations, including those of high recreational and commercial value. Scientists from the US Geological Survey (USGS) worked closely with state management agencies and the National Wildlife Federation to complete several objectives that...
Fox River walleye mercury isotope data
Adult walleye were caught in Fox River (Wisconsin) during April 2014. Age-0 walleye were caught in Fox River during October 2014. Total length, weight, age, and proportion of weight represented by water were determined for each of the walleye. Whole-fish homogenates were prepared during 2014-2015 and during 2017. Total mercury (HgT) concentration, methylmercury (MeHg) conc
Polychlorinated biphenyl concentrations in adult walleye from the Fox River (Wisconsin) population, 2014
Adult walleye (10 females and 10 males) were caught in Fox River (Wisconsin) during April 2014. Total length, weight, and age were determined for each of the walleye. Whole-fish homogenates were prepared during 2017. Lipid concentration and polychlorinated biphenyl (PCB) congener concentrations were determined in each of the homogenates during 2017-2018. For each sample, PCB
Status and trends of pelagic and benthic prey fish populations in Lake Michigan, 2020
Lakewide acoustic (AC) and bottom trawl (BT) surveys are conducted annually to generate indices of pelagic and benthic prey fish densities in Lake Michigan. The BT survey had been conducted each fall from 1973 through 2019 using 12-m trawls at depths ranging from 9 to 110 m and included 70 fixed locations distributed across seven transects; this...
Tingley, Ralph William; Bunnell, David; Warner, David; Madenjian, Charles P.; Armenio, Patricia Modeling round goby growth in Lake Michigan and Lake Huron with multi-model inference
Although the round goby Neogobius melanostomus has become established throughout the Laurentian Great Lakes, a multi-model inference (MMI) approach toward characterizing round goby growth in the Laurentian Great Lakes has yet to applied using otolith-derived data. Further, spatial variation in round goby growth among lakes has yet to be...
Duan, Youjian; Madenjian, Charles P.; Zhao, Yingming; Huo, Bin Dynamics of lake trout production in the main basin of Lake Huron
To inform lake trout (Salvelinus namaycush) fishery management in Lake Huron that has undergone rapid ecosystem changes, we quantified lake trout production dynamics by coupling age-structured stock assessment and fish bioenergetics models. Our approach revealed the connection between piscivore production and prey consumption, included growth...
He, Ji X.; Bence, James R.; Madenjian, Charles P.; Claramunt, Randall M. Long-term trends of Lake Michigan benthos with emphasis on the southern basin
Lake Michigan benthic macrofauna have been studied for almost a century, allowing for a unique analysis of long-term changes in community structure. We examined changes in abundances of three major taxonomic groups of benthic macroinvertebrates (Diporeia, Oligochaeta, and Sphaeriidae) in southern Lake Michigan from 1931-2015, and identified the...
Mehler, Knut; Burlakova, Lyubov E.; Karatayev, Alexander Y.; Elgin, Ashley K.; Nalepa, Thomas F.; Madenjian, Charles P.; Hinchey, Elizabeth K. 2019 Lake Michigan Lake Trout Working Group Report
This report provides a review on the progression of lake trout (Salvelinus namaycush) rehabilitation towards meeting the Salmonine Fish Community Objectives (FCOs) for Lake Michigan (Eshenroder et. al. 1995) and the interim goal and evaluation objectives articulated in A Fisheries Management Implementation Strategy for the Rehabilitation of Lake...
Madenjian, Charles P.; Bronte, Charles R.; Clark, Rick; Dickinson, Ben; Donner, Kevin; Gordon, Roger; Hanson, Dale; Janssen, John; Jonas, Jory; Kornis, Matthew; Lenart, Steve; Makauskas, Dan; Olsen, Erik; Redman, Becky; Schmidt, Laura; Smith, Jason; Treska, Ted 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...
Lennox, Robert J.; Bravener, Gale A.; Lin, Hsien-Yung; Madenjian, Charles P.; Muir, Andrew M.; Remucal, Christina K.; Robinson, Kelly F.; Rous, Andrew M.; Siefkes, Michael J.; Wilkie, Michael P.; Zielinski, Daniel P.; Cooke, Steven J. Factors affecting post-release survival of coded-wire tagged Lake Trout Salvelinus namaycush in Lake Michigan at four historical spawning locations
Since the 1950s, fishery agencies on Lake Michigan have pursued Lake Trout Salvelinus namaycush rehabilitation through Sea Lamprey Petromyzon marinus control, harvest regulations, and by stocking millions of fish annually. Stocking was prioritized at four historically important spawning locations beginning in 1985, and coded wire tags (CWTs) were...
Kornis, Matthew S.; Bronte, Charles R.; Holey, Mark E.; Hanson, S. Dale; Treska, Theodore J.; Jonas, Jory L.; Madenjian, Charles P.; Claramunt, Randall M.; Robillard, Steven R.; Breidert, Brian; Donner, Kevin C.; Lenart, Stephen J.; Martell, Archie W.; McKee, Patrick C.; Olson, Erik J. Shifting diets of Lake Trout in northeastern Lake Michigan
Prey fish communities in Lake Michigan have been steadily changing, characterized by declines in both the quantity and quality of Alewife Alosa pseudoharengus. To evaluate concurrent changes in the diet of Lake Trout Salvelinus namaycush in northeastern Lake Michigan, we analyzed stomach contents of Lake Trout caught during gill‐net...
Luo, Miles K.; Madenjian, Charles P.; Diana, James S.; Kornis, Matthew S.; Bronte, Charles R. 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...
Vidal, T.; Irwin, Brian J.; Madenjian, Charles P.; Wenger, S.J. Status and trends of prey fish populations in Lake Michigan, 2018
The U.S. Geological Survey Great Lakes Science Center has conducted lake-wide surveys of the fish community in Lake Michigan each fall since 1973 using standard 12 m bottom trawls towed along contour at depths of 9 to 110 m at each of seven index transects. The survey provides relative abundance and biomass estimates between the 5 m and 114 m...
Bunnell, David; Madenjian, Charles P.; Desorcie, Timothy J.; Armenio, Patricia; Adams, Jean V. Mercury isotopes reveal an ontogenetic shift in habitat use by walleye in lower Green Bay of Lake Michigan
In general, fish residing in rivers differ from fish residing in lakes in their mercury (Hg) isotope ratios. Specifically, fish residing in lakes typically show enriched values for the isotope ratios of δ202Hg (mass-dependent fractionation of isotope 202Hg) and Δ199Hg (mass-independent fractionation of isotope 199Hg) compared with fish...
Madenjian, Charles P.; Janssen, Sarah E.; Lepak, Ryan F.; Ogorek, Jacob M.; Rosera, Tylor J.; DeWild, John F.; Krabbenhoft, David P.; Cogswell, Stewart F.; Holey, Mark E. Absence of PCB hot spot effect in walleye Sander vitreus from lower Green Bay of Lake Michigan
Under certain conditions, polychlorinated biphenyl (PCB) concentration in individuals of one sex of an adult fish population may exceed that of the other sex by more than a factor of two. This phenomenon, known as the PCB hot spot effect, has been postulated to be contingent upon the following two conditions: (1) presence of a PCB hot spot in...
Madenjian, Charles P.; Dembkowski, Daniel J.; Isermann, Daniel A.; Batterman, Stuart A.; Chernyak, Sergei C.; Cogswell, Stewart F.; Holey, Mark E.