View of Starnberg Lake (IMAGE) Technical University of Munich (TUM) Caption With the help of aerial images -- such as this one showing the western shore of Lake Starnberg -- scientists are able to track the spread of certain aquatic plants. This information sheds light on the quality of the water (blue: bare sediment; green and yellow: sparse vegetation; dark red: dense vegetation). Credit Landesamt für Vermessung und Geodäsie Usage Restrictions Free for use for coverage on Technische Universitaet Muenchen with appropriate credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.