Story: Lichens

Alpine lichens (Ist of 2) (1st of 2)

Alpine lichens (Ist of 2)

The crustose lichen Rhizocarpon geographicum has been used to calculate the age of some glacial moraine surfaces. By measuring the diameter of the largest lichens on a moraine, and by knowing how much the diameter increases each year, scientists can calculate how long the area has been free of ice cover.

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Photograph by Janet Ledingham

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How to cite this page:

Maggy Wassilieff, 'Lichens - Lichens in New Zealand', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/10992/alpine-lichens-ist-of-2 (accessed 23 January 2022)

Story by Maggy Wassilieff, published 24 Sep 2007