Research on Oneida Lake is a major component of the CBFS program led by Jackson (fish and fisheries) and Rudstam (limnology). Jennifer Arnold and Steve Oswald from Penn State and Paul Curtis from Cornell continued their work on colonial waterbirds in the lake, Rebecca Schneider and Todd Walter with PhD student Sol Lisboa studied groundwater phosphorus input, April Gu and her group worked on phosphorus release from sediments and polyphosphate accumulating bacteria, Roxanne Razavi and Suresh Sethi worked with mercury contamination in sport fish as affected by round goby, Karim Aly-Kassam with graduate student Leo Louis and two interns worked on the ecological calendar, and Alexander Karatayev, Lyuba Burlakova and Vadim Karatayev used Oneida Lake and similar data from three polymictic Belarusian lakes to study the long-term effects of zebra and quagga mussels on the ecosystem. The Oneida program depends on our dedicated long-term research staff Tom Brooking, Tony VanDeValk, Kristen Holeck, and Chris Hotaling. Oneida Lake is a site member of the Global Lakes Ecological Observatory Network (GLEON) and part of several research projects comparing data from lakes across the world. In 2021, the fisheries data was used by research groups at DFO Canada (Hossain, Koops), University of Wyoming (Fetzer, Shoemaker), and NOAA-GLERL (Rutherford, Mason, Zhang), working on the coupling between phosphorus and fish, and by University of Minnesota (Hansen) studying year-class formation in walleye.