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  • Tomas Höök
  • Professor

Tomas received his BS, MS and PhD from the University of Michigan. After completing his PhD, he worked as a research investigator at the Cooperative Cooperative Institute for Limnology and Ecosystem Research. He has been a faculty at Purdue since 2008, and he also serves as Associate Director for Illinois-Indiana Sea Grant.

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  • Jay Beugley
  • Aquatic ecology specialist

Jay Beugly is an Aquatic Ecology Specialist and coordinates field and laboratory research in the lab. Jay received his BS from the Ohio State University and a MS from Ball State. On the side, he is working to complete his PhD at Purdue.

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  • Paris Collingsworth (Lab affiliate)
  • Research Assistant Professor

Paris earned a bachelor s degree in biology from Samford University, a master’s degree in zoology from Southern Illinois University and a Ph.D. in evolution, ecology and organismal biology from the Ohio State University. Prior to coming to Illinois-Indiana Sea Grant and Purdue, he did post-doctoral research at the US Geological Survey and the Cooperative Institute for Great Lake Research at the University of Michigan. His research focuses on ecosystem dynamics in the Laurentian Great Lakes. Working in these large systems, he uses ecological and statistical models as tools to develop a mechanistic understanding about how anthropogenic and natural stressors impact ecosystem structure and function. This research is interdisciplinary by nature and extensive requires collaborations with academic federal, provincial and state agency personnel from across the basin. Current projects include describing how food web structure changes along productivity gradients in Lakes Huron, Ontario, Erie and Michigan identifying sources of variation in the relationship between total phosphorus and chlorophyll concentrations in western Lake Erie and evaluating the ecological effects of hypoxia in central Lake Erie.

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  • Carolyn Foley
  • Research Associate

Carolyn's background is in invertebrate biology. Her research focuses on growth and survival of benthic macroinvertebrates like Diporeia and Hexagenia, as well as small-bodied fishes like round gobies and young yellow perch. Techniques employed include diet analysis, stable isotope analysis, and RNA:DNA. Carolyn is also the assistant research coordinator for Illinois-Indiana Sea Grant.

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  • Alex Gatch
  • MS student

Alex Gatch completed his BS in Biology at Hobart and William Smith Colleges in 2016. After graduating, he worked as a fisheries technician at Cornell University studying salmonid population dynamics in the Adirondack Mountains, NY. Alex then worked as a fisheries technician at the United States Geological Survey (USGS) on Lake Ontario, NY monitoring alewife and salmonid populations. For his MS research, Alex is developing methods to restore spawning reefs in the Great Lakes and evaluate how sediment cover affects egg viability.

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  • Scott Koenigbauer
  • MS student

Scott completed his BS in Ecology and Evolutionary Biology at the University of Michigan in 2017, where he participated in studies of a Japanese reef fish and lake sturgeon. As an intern at the University of Arkansas, he researched the trophic interactions between smallmouth bass and crayfish in Ozark streams. His MS research at Purdue investigates the variation of reproductive traits, such as egg size, particularly in yellow perch in Lake Michigan and inland lakes..

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  • Susanna LaGory
  • PhD student

Suse graduated from Michigan State University in 2014 with her BS in Fisheries and Wildlife. She spent the next year working as an intern with the native aquatics biologist for Colorado Parks and Wildlife in northeast Colorado. In 2015, Suse returned to the Great Lakes and began the MS program at the Annis Water Resources Institute (Grand Valley State University) in Muskegon, MI. Her master’s thesis research evaluated the impacts of seasonal environmental changes on mottled sculpin and brown trout in a small, coldwater stream. Suse’s PhD work at Purdue will focus on developing predictive habitat models for native freshwater mussels in collaboration with the Indiana DNR. These models will be used to inform mussel conservation efforts, identify potential areas for mussel species reintroduction, and prioritize monitoring and recovery efforts for at-risk mussel populations..

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  • Tim Malinich
  • PhD student

Tim Malinich is a PhD student in the Höök lab. Tim's interests include fisheries ecology & evolution and fish behavioral ecology. He is currently exploring the impacts of phenotypic plasticity on Yellow Perch (Perca flavescens). His thesis will examine the plastic changes on morphology in perch and potential impacts to maternal effects on perch eggs. His thesis work will utilize a combination of mesocosm and modeling studies. He currently has a M.S. degree in Biology from Central Michigan University where he examined the impacts of larval fish behavior on dispersal within the Great Lakes.

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  • Patricia Nease
  • MS student

Patricia Nease completed her BS in Fisheries and Aquatic Sciences at Colorado State University in 2017. While as CSU, she worked as a Biological Sciences Technician for the USGS in Fort Collins. Currently she is studying whether young of the year Largemouth bass utilize different trophic pathways based on macrophyte abundance in Indiana’s glacial lakes.

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  • Annie Scofield
  • Postdoctoral researcher

Annie earned her BS and MS in Earth Systems at Stanford University, where she focused in Marine Ecology and studied rocky intertidal communities at the Hopkins Marine Station. She then worked for Sea Education Association (SEA) teaching oceanography and marine biology aboard tall sailing ships. After a few years of adventures with SEA, she returned to school to complete a PhD at Cornell University. Her dissertation research focused on deep chlorophyll maxima and lower food web dynamics in the Laurentian Great Lakes. At Purdue University, she is continuing her work in the Great Lakes by studying food web ecology using stable isotope analysis.

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  • Taylor Senegal
  • MS student

Taylor Senegal completed his BS in Marine Biology at UC Santa Cruz in 2014. From 2014-2017, he worked for the Great Basin Institute at Lake Mead National Recreation Area as an aquatic invasive species (AIS) Research Associate. His MS research focuses on trophic pathways supporting fish production, specifically of yellow perch in Lake Michigan. He is also studying differences in morphology as related to habitat location and foraging strategy.

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  • Mitch Zischke (Lab affiliate)
  • Clinical Extension Assistant Professor

Mitch has a strong interest in the natural world, particularly fish. This stems from a desire to spend as much time outside, in or on water, as he can. To foster this interest, he completed a Bachelor of Science (Honors) majoring in Tropical Marine Science at the University of Queensland in Brisbane, Australia (where he is from). After finishing his BSc, he worked as fisheries management officer at the Australian Fisheries Management Authority - the national government department responsible for Australia's fisheries resources. After this, he returned to research where he completed a Ph.D. in Fisheries Science at the University of Queensland. He then worked with Fisheries Queensland, a state-level fisheries monitoring, assessment and management agency. In August 2014 he moved from Australia to West Lafayette, IN to start a postdoctoral position in the Fisheries and Aquatic Sciences research group at Purdue University.


Hiu-Yu Wang, PHD 2008.

Currently Assoc. Professor National Taiwan University

Greg Jacobs, MS 2008

Currently PhD student University of Georgia

Kristin Arend, Postdoctoral researcher.

Currently Fisheries Biologist Ohio Department of Natural Resources

James Roberts, PhD 2010.

Currently Fishery Biologist USGS

Daniel Ryan, MS 2010

Currently Fisheries Biologist Pennsylvania Fish and Boat Commission

Daisuke Goto, Postdoctoral researcher

Currently, Norway

Charlie Roswell, MS 2011

Currently, Fishery Biologist Illinois Natural History Survey

Chris Middaugh, MS 2011

Currently, Research Biologist Arkansas DNR

Christian Perry, MS 2011.

Currently, PostDoc Utah State

Lori Ivan, Postdoctoral researcher

Currently, Michigan State University

Alicia Roswell, Research Technician

Jonah Withers, MS 2013

Currently, Fishery Biologist USFWS

Lee Henebry, MS 2014

Andrew Honsey, MS 2014

Currently PhD student University of Minnesota

Jay Staton, Lab Technician

Currently, MS student Humboldt State

Tim Sesterhenn, Postdoctoral researcher

Currently Asst. Professor Morningside College

David Coulter, PhD 2015

Currently Post-Doc Southern Illinois University

Zach Feiner, PhD 2015

Currently Post-Doc Purdue University

Allison Hrycik, MS 2015

Currently PhD Student University of Vermont

Zoe Almeida, MS 2016

Currently PhD Student Ohio State University

Margaret Hutton Stadig, MS 2016

Currently Research Biologist Texas Parks and Wildlife

Nick Kalejs, MS 2017

Currently Fisheries Biologist Maine DNR

Sam Guffey, Lab Manager

Zach Feiner, PhD 2015 and Postdoctoral researcher

Currently Researcher Wisconsin DNR

Sarah Stein, PhD 2018

Ben Leonhardt, MS 2018

Currently Biologist US Fish and Wildlife Service