Invasive Species

Environmental organizations from the United States and Canada have teamed up each year, as part of the Cooperative Science and Monitoring Initiative (CSMI) program, to assess conditions in one of the five Great Lakes. . Each year, the survey focuses on a series of research areas, such as phosphorus and nitrogen input and movement through the food web, phytoplankton and zooplankton populations, and...

USGS scientists worked with the National Oceanic and Atmospheric Administration (NOAA) to monitor growth of invasive zebra mussels ( Dreissena polymorpha ) in Lake Ontario with the goal of improving understanding on the effects these mussels have on the Lake food web.