by Luca Marazzi * Why is it important to study algae? To start with, algae produce ~ 50% of the oxygen on planet Earth, they are food for small and large animals that in turn are eaten by people, but they also recycle nutrients and absorb CO 2 from the air; by existing and doing their own thing, these microorganisms provide these so called ecosystem services to human beings (Fig. 1). Moreover, as algae reproduce fast and are often adapted to specific environmental conditions, understanding how many species of algae, and which ones, live where and why give us cues as to the health of aquatic ecosystems, such as rivers, lakes, and wetlands. Fig. 1 . Simplified scheme of the role of algae in food webs (from my Ph.D. Thesis ). * Dr. Luca Marazzi is a freshwater ecologist working in Dr. Evelyn Gaiser’s research group in the School of Environment, Arts and Society at Florida International University. His main interest is how biodiversity, ecology, and dist
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