| Author | APIS - Air Pollution Information System |
| Title | Guide to using a lichen-based index to assess nitrogen air quality |
| Type | Web Site/Page |
| Source | www.apis.ac.uk/nitrogen-lichen-field-manual |
| Review (by Malcolm Storey) | Online information about the lichen-based nitrogen pollution index. |
| Website url | www.apis.ac.uk/nitrogen-lichen-field-manual |
| Notes & Purpose | Status | Taxon | English | Classification |
|---|---|---|---|---|
| Current | [Lichenes] | lichens | Fungi |
Unless otherwise expressly stated, all original material on the BioInfo website by Malcolm Storey is licensed under the above Creative Commons Licence.