Nitrogen Limitation of Shallow Lakes (VIDEO) Forschungsverbund Berlin This video is under embargo. Please login to access this video. Caption Scientists from the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) have analysed long-term data to prove that decreasing nitrogen in Berlin's Lake Müggelsee is the key to reducing algal blooms in summer. Credit IGB Usage Restrictions The video may only be used with appropriate caption and 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.