Minnesota Aquatic Invasive Species Research Center (MAISRC)
What sediment cores can tell us about Lake Mille Lacs, walleye, and spiny waterflea
Science doesn’t stop in the winter! This month, MAISRC researchers began work to get to the bottom of how spiny waterflea are impacting Lake Mille Lacs – the lake bottom, that is. The team, led by Donn Branstrator, extracted more than 200 years’ worth of sediment from frozen Lake Mille Lacs and will analyze several decades’ worth in order to learn more about the role that spiny waterfleas have had in disrupting the food web and contributing to the walleye crisis.
Once back at the lab, researchers will cut the sediment cores into thin strips which they can look at under a microscope to tell when spiny waterfleas arrived and what the food web looked like before and after. Stay tuned for findings from this research, and learn more about spiny waterfleas here.