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Tuesday, January 30 • 6:00pm - 9:00pm
Poster Display. Change in the Fish Community After Restoration of the Little Rapids, St Marys River

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AUTHORS: Katherine Skubik, Dr. Ashley Moerke - Lake Superior State University

ABSTRACT: The St. Marys River is a Great Lakes Area of Concern where human impacts including the shipping industry have changed the morphology of the river and resulted in a destruction of most of the rapids and habitat losses of 90%. The Little Rapids is a historic spawning ground for fishes including Lake Whitefish, salmonids, and Lake Sturgeon in the St. Marys River that was impounded by a causeway on Sugar Island nearly a century ago. A $9 million restoration project funded by NOAA sought to restore flow to the area, create spawning habitat, and increase fish populations by removing two small culverts and replacing them with a 600-foot spanning bridge in November 2016. Pre-restoration (2013-2014) and post-restoration (2017) assessments monitored larval, sub-adult, and adult fishes in the Little Rapids area. Pre-restoration assessments of the Little Rapids sampled found little spawning activity, 98% lentic and primarily non-game species with the most common species being Shiners in the Little Rapids area. Post restoration monitoring preliminary results show increased spawning activity and fish use by lotic species with the most common species being Rainbow Smelt. The successful restoration of the Little Rapids is part of a larger goal of delisting the St. Marys River as a Great Lakes Area of Concern. 

Tuesday January 30, 2018 6:00pm - 9:00pm CST
Ballroom C & Foyer

Attendees (4)