Publications
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A distributed pipeline for DIDSON data processing
Technological advances in the field of ecology allow data on ecological systems to be collected at high resolution, both temporally and spatially. Devices such as Dual-frequency Identification Sonar (DIDSON) can be deployed in aquatic environments for extended periods and easily generate several terabytes of underwater surveillance data which may need to be processed multiple times. Due to the lar
Authors
Liling Li, Tyler Danner, Jesse Eickholt, Erin L. McCann, Kevin Pangle, Nicholas S. Johnson
Characterization of Sea Lamprey stream entry using dual‐frequency identification sonar
Effective methods to control invasive Sea Lampreys Petromyzon marinus in the Laurentian Great Lakes often rely on knowledge of the timing of the Sea Lamprey spawning migration, which has previously been characterized using data gathered from traps. Most assessment traps are located many kilometers upstream from the river mouth, so less is known about when Sea Lampreys enter spawning streams and wh
Authors
Erin L. McCain, Nicholas S. Johnson, Peter J. Hrodey, Kevin L. Pangle
Acoustic telemetry observation systems: challenges encountered and overcome in the Laurentian Great Lakes
The Great Lakes Acoustic Telemetry Observation System (GLATOS), organized in 2012, aims to advance and improve conservation and management of Great Lakes fishes by providing information on behavior, habitat use, and population dynamics. GLATOS faced challenges during establishment, including a funding agency-imposed urgency to initiate projects, a lack of telemetry expertise, and managing a flood
Authors
Charles C. Krueger, Christopher Holbrook, Thomas R. Binder, Christopher Vandergoot, Todd A. Hayden, Darryl W. Hondorp, Nancy Nate, Kelli Paige, Stephen Riley, Aaron T. Fisk, Steven J. Cooke
Real-time water quality monitoring at a Great Lakes National Park
Quantitative polymerase chain reaction (qPCR) was used by the USEPA to establish new recreational water quality criteria in 2012 using the indicator bacteria enterococci. The application of this method has been limited, but resource managers are interested in more timely monitoring results. In this study, we evaluated the efficacy of qPCR as a rapid, alternative method to the time-consuming membra
Authors
Muruleedhara Byappanahalli, Meredith B. Nevers, Dawn Shively, Ashley Spoljaric, Christopher Otto
Site-scale disturbance best predicts moss, vascular plant, and amphibian indices in Ohio wetlands
Loss of wetland habitats and their associated biological communities is a major environmental concern. Quality assessment indices (QAIs) and indices of biological integrity (IBIs) are useful for assessing the responses of taxa to wetland habitat quality and land use in the surrounding landscape. We synthesized the results of our previous predictive modeling studies of five IBIs and QAIs for commun
Authors
Martin A. Stapanian, Mick Micacchion, Brian Gara, William Schumacher, Jean V. Adams
Fish community responses to submerged aquatic vegetation in Maumee Bay, Western Lake Erie
Submerged aquatic vegetation (SAV) in clearwater systems simultaneously provides habitat for invertebrate prey and acts as refugia for small fishes. Many fishes in Lake Erie rely on shallow, heavily vegetated bays as spawning grounds and the loss or absence of which is known to reduce recruitment in other systems. The Maumee River and Maumee Bay, which once had abundant macrophyte beds, have exper
Authors
Jacob Miller, Patrick Kočovský, Daniel Wiegmann, Jeffery G. Miner
Using turbidity measurements to estimate total phosphorus and sediment flux in a Great Lakes coastal wetland
Coastal wetlands around the Laurentian Great Lakes in North America have the potential to intercept surface water coming off of the landscape and reduce the amount of nutrients and sediment entering the lakes. However, extensive coastal wetland areas have been isolated behind dikes and thus have limited interaction with nutrient-rich waters that contribute to harmful algal blooms and other water-q
Authors
Joseph J. Baustian, Kurt P. Kowalski, Alex Czayka
Measuring and evaluating ecological flows from streams to regions: Steps towards national coverage
Living aquatic communities are largely determined and maintained by the volume and quality of flowing waters, both within lotic systems and in receiving waters of coastal systems. However, flow is one of the most frequently and extensively altered features of rivers and streams; alteration effects are likely to be exacerbated by climate change. Lotic systems vary and different fish species need di
Authors
James E. McKenna, Howard W. Reeves, Paul Seelbach
Identifying and eliminating sources of recreational water quality degradation along an urban coast
Restoration of highly degraded urban coastal waters often requires large-scale, complex projects, but in the interim, smaller-scale efforts can provide immediate improvements to water quality conditions for visitor use. We examined short-term efforts to improve recreational water quality near the Grand Calumet River (GC) in the Laurentian Great Lakes. Identified as an Area of Concern (AOC) by the
Authors
Meredith B. Nevers, Muruleedhara Byappanahalli, Dawn Shively, Paul M. Buszka, P. Ryan Jackson, Mantha S. Phanikumar
From top to bottom: Do Lake Trout diversify along a depth gradient in Great Bear Lake, NT, Canada?
Depth is usually considered the main driver of Lake Trout intraspecific diversity across lakes in North America. Given that Great Bear Lake is one of the largest and deepest freshwater systems in North America, we predicted that Lake Trout intraspecific diversity to be organized along a depth axis within this system. Thus, we investigated whether a deep-water morph of Lake Trout co-existed with fo
Authors
Louise Chavarie, Kimberly L. Howland, Les N. Harris, Michael J. Hansen, William J. Harford, Colin P. Gallagher, Shauna M. Baillie, Brendan Malley, William M. Tonn, Andrew M. Muir, Charles C. Krueger
Hierarchical modeling assessment of the influence of watershed stressors on fish and invertebrate species in Gulf of Mexico estuaries
The northern Gulf of Mexico (GoM) spans five U.S. states and encompasses estuaries that vary greatly in size, shape, upstream river input, eutrophication status, and biotic communities. Given the variability among these estuaries, assessing their biological condition relative to anthropogenic stressors is challenging, but important to regional fisheries management and habitat conservation initiati
Authors
Jonathan Miller, Peter C. Esselman, Ibrahim Alameddine, Kristan Blackhart, Daniel R. Obenour
Stomach contents and stable isotopes analysis indicate Hemimysis anomala in Lake Ontario are broadly omnivorous
Hemimysis anomala is a recent invader to North American aquatic ecosystems and is spreading rapidly throughout the Great Lakes region. This is the first littoral mysid in the North American Great Lakes; and, as such, the ecosystem effects are unknown and could be substantial. These effects depend on the role of Hemimysis in the food web and, therefore, on its diet. We examined the stomach contents
Authors
T. M. Evans, R. Naddafi, Brian C. Weidel, Brian F. Lantry, M. G. Walsh, B. T. Boscarino, O. E. Johannsson, L. G. Rudstam