Professor, School of Freshwater Sciences
PhD, Fisheries and Wildlife, Michigan State University, 1974
MS, Fisheries and Wildlife, Michigan State University, 1972
BS, Biology, Alma College, 1970
- Fisheries ecology
- Biological oceanography
Recent and selected publications
Houghton CJ, Bronte CR, Paddock RW, and Janssen J. 2010. Evidence for allochthonous prey delivery to Lake Michigan’s Mid-Lake Reef Complex: Are deep reefs analogs to oceanic sea mounts. Journal of Great Lakes Research 36: 666-673.
Lederer A, Janssen J, Reed T, Wolf A. 2008. Impacts of the introduced round goby (Apollonia melanostomus) on dreissenids (Dreissena polymorpha and Dreissena bugensis) and on macroinvertebrate community between 2003 and 2006 in the littoral zone of Green Bay, Lake Michigan. Journal of Great Lakes Research 34: 690-697.
Janssen J, Marsden JE, Bronte CR, Jude DJ, Sitar SP, and Goetz FW. 2007. Challenges to deep-water reproduction by Lake Trout: Pertinence to restoration in Lake Michigan. Journal of Great Lakes Research 33 (Suppl. 1): 59-74.
Beletsky D, Mason D, Schwab D, Rutherford E, and Janssen J. 2007. Biophysical model of larval yellow perch in Lake Michigan. Journal of Great Lakes Research 33: 842-866.
Janssen J, Jude DJ, Edsall TA, Paddock RW, Watrus N, Toneys M, and McKee P. 2006. Evidence of lake trout reproduction at Lake Michigan’s mid-lake reef complex. Journal of Great Lakes Research 32: 749-763.