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Guide to using a lichen based index to nitrogen air quality (Identification Chart)

by Wolseley, P.A.; Leith, I.D.; Sheppard, L.J.; Lewis, J.E.J.; Crittenden, P.D.; Sutton, M.A.

Series : FSC IDENTIFICATION CHARTS
Publisher : Field Studies Council
Illustrations : colour illustrations

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Description:

This guide provides a simple method for determining gaseous nitrogen pollution that can be used by anyone interested in the impacts of gaseous N on sensitive habitats in the UK. It includes a simple identification key to epiphytic lichens growing on oak and birch that show sensitivity to, or tolerance of, atmospheric N pollution. The lichen species present at your location are used to calculate a lichen indicator score (LIS), which is then converted into a standardised nitrogen air quality index (NAQI), showing the nitrogen air quality at your location.