To engage our community in between our annual symposia, PRRSUM is excited to announce the launching of a PRRSUM webinar series.

To livestream a webinar, please connect to the following WebEx link: https://umn.webex.com/umn/j.php?MTID=m9e6f902a8019b3727fb27d93023b161e

NOTE: To listen to the talk, you will need speakers associated with your computer.  All microphones will be muted during the presentation, but will be open during the Q&A at the end. 

We will initiate the webinar meeting room 15 minutes prior to the talk to troubleshoot audio issues. Please arrive early to test your setup if needed.

If you are interested in presenting a webinar (or would like to suggest a speaker), please email Barbara Heitkamp.


The Challenges of Urban Watersheds and Urban River Restoration
Wednesday, September 23rd (9.23.15) 12:00 pm (Central Time) 
Emily Bernhardt, Duke University

Abstract: TBA

Biography: Dr. Emily Bernhardt received her PhD in Ecology and Evolutionary Biology from Cornell University in 2001 and has been a member of the Duke faculty since 2004. The core of Emily's interests are in watershed biogeochemistry, with most of her current effort invested in understanding how the ways in which people live on and use the landscape alters the structure, function and chemistry of receiving streams and wetlands. She has written several well-cited publications synthesizing stream and river restoration efforts as well as urban river restoration efforts.

Now that's a beautiful stream...are there any fish? Habitat Restoration and the Role of Perception 
Wednesday, April 1st (4.1.15), 12:00 pm (Central Time) 
Hans Tritico, University of Mount Union

Abstract: Restoration projects are undertaken for a wide variety of reasons. One commonly stated reason is to improve fish habitat. This presentation will briefly review what is currently known about fish habitat selection and compare that body of knowledge to our current design practices. What we find through this comparison is that while fish choose habitat based on their unique perception of the environment, we tend to restore streams based on our own perception of their environment. One prescient example of how a fish’s perspective of its environment is dramatically different than our own is the existence of the lateral line system in most fish species. The lateral line system detects near field vibrations in the water. This system is used in a number of behaviors including orientation, positioning, and predator-prey interactions. It is also apparent that in a number of low visibility environments that the lateral line system is the primary way fish perceive their environment. Fish habitat in low visibility streams, which occur frequently across the Midwest, is therefore more strongly connected to the temporal flow conditions than to the visual layout of an aquatic environment. The existence of two distinct lenses (fish perception vs. human perception) means that stream restoration projects which include a stated goal of restoring fish habitat may increase their efficacy by working to align the two perspectives. To this end a number of researchers have been working to design instruments that will let us better understand the spatial and temporal flow variations as fish experience them. While changing perspectives may eventually mean some adjustments to our current design practices it also provides a new framework for achieving increased habitat restoration in agricultural and urbanized environments.

Biography: Dr. Hans Tritico is an assistant professor of Engineering at the University of Mount Union. Dr. Tritico’s research merges his two passions – engineering and fisheries ecology. His 13 years of research expertise are in stream restoration and fish passage engineer. He holds B.S. and M.S. degrees in civil engineering from the University of Michigan and Washington State University. He holds a joint Ph.D. in civil engineering and aquatic ecology from the University of Michigan. Dr. Tritico’s research has been funded by the National Science Foundation and the U.S. Department of Transportation, among others.


April 29th (4.29.14), 12:00 pm (Central Time)- A Story of River Redemption - How science is working to restore lost features and creatures in the urban Mississippi River - Mike Davis, Minnesota DNR

The history of water quality of the Mississippi River is a captivating one, reflective of how our choices as a society have impacted our country's largest drainage network.  Join us as Mike Davis, a malacologist with the Minnesota Department of Natural Resources, provides a context for understanding how Mississippi River water quality has evolved over the last century and how native freshwater mussels (with their unique life history!) contribute to this story.