Massive algae blooms appear in spring in certain bodies of water only to vanish within a number of weeks. In this video, BERNHARD M. FUCHS analyzes the degradation of such algae, exploring which organisms are involved and what they actually do. * Employing methodologies involving ribosomal RNA, in situ hybridization and metagenome sequencing, Fuchs finds that a strikingly limited range of organisms (Flavobacteria) are active in this process and that their activities become increasingly complex over the duration of the algae bloom. * Showing how genetic information can be used to predict ecological activity, the work makes a significant contribution to our understanding of the vital role played by microorganisms. * This LT Publication is divided into the following chapters: 0:00 Question 0:27 Method 1:50 Findings 3:57 Relevance 6:08 Outlook