International expert Professor Mark Seaward will be giving a fascinating talk about the importance of lichens in our world.
Lichens are a symbiotic relationship between a fungus and an algae. There are around 20,000-30,000 species worldwide. They are sensitive to environmental change, and are used as bioindicators for pollution, climate change, and in habitat management.
Mark has a strong interest in biomonitoring pollution, particularly heavy metals and radionuclides, for which he has been internationally honoured. This talk is for anyone with an interest in the natural world and is suitable for both a specialist and a non specialist audience. The talk will look at the value of lichens in our world, the problems they can cause to our ancient monuments and their value as biomonitors.