Articles by Laurence Carvalho

Professor Laurence Carvalho is an ecologist in the Freshwater Restoration and Sustainability Group at UK Centre for Ecology & Hydrology (UKCEH) and an Honorary Professor at the University of Stirling.

One of the characteristic features of a lake is its colour.  You may have noticed that the water in many lakes in Bengaluru is green, and not blue, as you might have imagined it to be. This is due to the presence of algae. Algae are microscopic plants that contain chlorophyll which is the pigment that gives it a green colour. While some amount of algae is healthy for the lake ecosystem, excess algae can be harmful and is an indicator of a polluted and nutrient-rich lake. Lakes rich in nutrients such as nitrogen and phosphorus are called eutrophic lakes,…

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