Colours of water, colours of algae

Authors

  • Elisa Berdalet Institut de Ciències del Mar (ICM-CSIC)

Keywords:

photosynthetic pigments, harmful algal blooms, HABs.

Abstract

A great diversity of pigments allow photosynthetic organisms to capture light energy to conduct photosynthesis. Pigments are a fingerprint of the evolutionary history of these organisms through successive endosymbioses and mutations, as well as a taxonomic classification tool. In this paper, the main groups of microscopic photosynthetic organisms found in aquatic habitats – microalgae and cyanobacteria – are briefly presented, with a specific mention of their pigment composition. These organisms form the basis of microbial food webs and they are fundamental for life on our planet. In some specific cases, however, the proliferation of certain organisms has negative effects on humans and the environment. These events are referred to as “harmful algal blooms” (HABs), which are often visible because the water takes on the colour of the photosynthetic pigments – the colour of the algae.

Keywords: photosynthetic pigments, harmful algal blooms, HABs.

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Author Biography

Elisa Berdalet, Institut de Ciències del Mar (ICM-CSIC)



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