In this podcast interview, which is in Swedish language, I talk with ecologist Janolof Hermansson, who has for many years inventoried and studied lichens both in Dalarna in Sweden and in Russia about:

- what lichens are

- why it is so difficult to define their composition without modern technology

- what conditions they require to develop

- what their function in our ecosystem is

- how human activity impacts lichens

- what you need to go on your own lichen discovery adventure

- what it needs to increase our knowledge on lichens