Carl R. Ruetz III, Ph.D


Grand Valley State University
Annis Water Resources Institute
(616) 331-3946

Dr. Carl Ruetz III

Research Interests & Approach:

I have a general interest in fisheries biology with emphasis on research questions related to population and community ecology. My research focuses on streams, lakes, and wetlands. In addition to fishes, benthic macroinvertebrates are often a focal study species. I enjoy both empirical and theoretical approaches to research, and I strive to include mathematical modeling in my research. I have a strong interest in experimental design and statistical analyses, which are critical for planning and executing empirical research.

My current research includes studies that delineate stock structure of fish populations through the use of genetic and otolith isotopic analyses, examine the distribution and status of long-lived fish species through acoustic telemetry, assess the long-term dynamics of fish populations in local lakes impacted by current and past anthropogenic activities, and investigate the role of fish predation in structuring stream food webs. Undergraduate and graduate students are an important component of my research program, and I pride myself in mentoring students.



  • Fisheries ecology & management
  • Experimental design & statistics
  • Population & community ecology
  • Stream ecology: invertebrate drift, leaf breakdown, and predator-prey interactions between fish and benthic macroinvertebrates

Honors & Awards:

  • Distinguished Graduate Mentoring Award, Center for Scholarly and Creative Excellence, Grand Valley State University, 2013
  • President, Michigan Chapter of the American Fisheries Society, 2008
  • Outstanding Faculty Mentor Award, Graduate and Professional Student Organization, Grand Valley State University, Fall 2007

General Information:

  • Curriculum Vitae 
  • Ph.D., Fisheries, 2001 - University of Minnesota
  • M.S., Forest Resources, 1997 - University of Georgia
  • B.S., Biology, 1994 - Lake Superior State University
  • Post-Doctoral Research Fellow - Florida International University

Page last modified June 28, 2018