The main methods for surveying mussels in the Tollway corridor include:
– snorkeling to visually search for mussels
– grubbing – feeling in the substrate for buried mussels
– incidental encounters
Tiemann, J.S., M.J. Dreslik, S.J. Baker, and C.A. Phillips. 2016. Assessment of a short-distance freshwater mussel relocation as viable tool during bridge construction projects. Freshwater Mollusk Biology and Conservation 19:80-87
Highlights from our work:
- Approximately 60 percent of translocated mussels survived their first year, indicating this is likely an effective mitigation effort.
- Twenty-one threatened or endangered species and two sensitive habitat types have been found in the Rt 53 North Extension corridor historically, but thus far only 6 of the species have been found, 4 plants and 2 fishes.