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A natural phenomenon turned nasty: Where, when, and why will cyanobacterial blooms be toxic?

My work focus on Microcystis botrys, a freshwater cyanobacterial species commonly found in lakes in southern Sweden. It is known to produce microcystins, toxins that could be hazardous to human health, pets, cattle, aquatic organisms, and that could be a treath to drinking water supplies. However, not all strains ("individuals") in a bloom produce microcystins, and strains that are "toxic" can produce a large vareity of microcystins, in different quantities. Therefore, Microcystis blooms are not necessarily harmful.

The main focus of this project is to study the intraspecific variation of microcystin-production in M. botrys. My current aim is to investigate whether "toxic" and "non-toxic" strains form separate subpopulations and if this is driven by selection/ecological differentiation rather than neutral evolution. Another task is to examine the genetic structure of populations (temporal and spatial distribution, dispersal patterns) and the potential ecological functions of microcystins (during competition of nutrients and other resources, protection against predators and/or parasites).

Expertise related to UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

  • SDG 6 - Clean Water and Sanitation
  • SDG 14 - Life Below Water


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Collaborations and top research areas from the last five years

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