While invasive zebra mussels consume small plant-like organisms called phytoplankton, MSU researchers Stephen Hamilton and Orlando Sarnelle discovered during a long-term study that zebra mussels can actually increase Microcystis, a type of phytoplankton known as “blue-green algae” or cyanobacteria, that forms harmful floating blooms. The study, titled Cascading effects: Insights from the U.S. Long Term Ecological Research Network, is one of five projects recently highlighted in a special feature in the Ecological Society of America’s journal, Ecosphere.