April Sip of Science - Keeping the Flying Carp Grounded: Optimizing Mississippi River Lock and Dams to Block Silver and Bighead Carp
Daniel Zielinski, Minnesota Aquatic Invasive Species Center, University of Minnesota
April 8th, 2015; 5:30 pm
River Room, Aster Cafe, 125 SE Main St. Minneapolis, Minnesota
RSVP for Sip of Science
Silver (Hypophthalmichthys molitrix) and bighead (H. nobilis) carps (collectively known as “Asian carp”) are reproducing as far north as Pool 19 near Keokuk, IA, and threaten to expand northward into Minnesota waters where few have been caught to date. In 2014, researchers at the University of Minnesota, led by Dr. Peter Sorensen, began work on a project aimed at optimizing the Upper Mississippi River lock and dam systems for blocking Asian carp through gate modifications while using acoustic deterrents in locks. The first objective of the project combines computational modelling with experimental swimming tests to identify changes to gate operation that might inhibit passage of Asian carp while having minimal impacts on native fish. The second objective seeks to develop and test acoustic deterrents to keep Asian carp out of lock chambers (sound is ideal for this effort as Asian carp are more sensitive to sound than most native fishes, and thus can be targeted in a species specific manner). This presentation will provide a brief primer on Asian carp in the US and details on how lock and dams might be turned into velocity and acoustic barriers for Asian carp, including the installation and function of an acoustic deterrent system at Lock and Dam #8 (Genoa, WI).
ABOUT THE SPEAKER
Dr. Zielinski is a Postdoctoral Research Associate at the Minnesota Aquatic Invasive Species Research Center specializing in ecohydraulics, underwater acoustics, and numerical modeling. With a Ph.D. in civil engineering from the University of Minnesota, much of his work has focused on the design of experiments aimed at quantifying behavioral responses of fish to acoustic and hydrodynamic stimuli and the development of advanced numerical models describing organism and physical transport processes.