Environmental conditions synchronize waterbird mortality events in the Great Lakes: Data

During 2010 to 2013, waterbird mortality surveillance programs used a shared protocol for shoreline walking surveys performed June to November at three areas in northern Lake Michigan. Timing (to day) and location (to transect) of carcass deposition and species affected were summarized. Using these observations, the broader goal of our study was to quantify the spatial synchrony of avian mortality events and explore whether within-year lake conditions (lake surface temperatures and the presence of algal masses) were related to the magnitude and periodicity of these mortality events. We generated the data on bird mortality, but we used publically-available data from the National Aeronautics and Space Administration for lake surface [...]