List name
Lichen habitat index - Metalliferous Habitats Index (MHI)
Owner
davidgenney@gmail.com
List type
Conservation list
Description
The lichen flora of heavy metal mines has been reviewed and an index developed (Simkin, in press). The index is applicable to British sites contaminated by heavy metals (particularly lead, zinc, cadmium and copper) as a result of mining activity and may include disused mines, smeltmills, hushes, opencuts, and also the alluvial gravels downstream of these. Such habitats can support a very high lichen diversity: a collective total of 626 taxa (excluding species that primarily grow on trees) has been recorded, including eight Threatened and 18 Near Threatened species. Saxicolous and terricolous species are the main interest, principally in areas sparse of vegetation. The index comprises 49 taxa that are preferentially found in metal-rich habitats, of which 27 are saxicolous and 22 terricolous (Table 6) and applies to individual mine sites or mine complexes that are ecologically coherent. Sites are assessed on the total number of recorded species in Table 6 (saxicolous and terricolous taxa combined). A site supporting 10 or more should be considered for notification. There is considerable variation between orefields but a single selection threshold applies. Where no sites within an orefield qualify, the richest site within the AoS should be considered.
Date submitted
2018-03-26
Date updated
2018-03-26
Is private
No
Included in species pages
No
Authoritative
No
Invasive
No
Threatened
No
Part of the sensitive data service
No
Region
Not provided
Metadata link
https://registry.nbnatlas.org/public/show/dr1780
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Rhizocarpon oederi
Rhizocarpon oederi (Weber) Körb.
 
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Sarcosagium campestre var. campestre
Sarcosagium campestre var. campestre (Fr.) Poetsch & Schied.
 
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Sarcosagium campestre var. macrosporum
Sarcosagium campestre var. macrosporum Coppins & P. James
 
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Steinia geophana
Steinia geophana (Nyl.) Stein
 
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Stereocaulon condensatum
Stereocaulon condensatum Hoffm.
 
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Stereocaulon dactylophyllum var. dactylophyllum
Stereocaulon dactylophyllum var. dactylophyllum Flörke
 
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Stereocaulon delisei
Stereocaulon delisei Bory ex Duby
 
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Stereocaulon glareosum
Stereocaulon glareosum (Savicz) H. Magn.
 
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Stereocaulon leucophaeopsis
Stereocaulon leucophaeopsis (Nyl.) P. James & Purvis
 
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Stereocaulon nanodes
Stereocaulon nanodes Tuck.
 
Action Supplied Name Scientific Name (matched) Image Author (matched) Common Name (matched)
Rhizocarpon oederi Rhizocarpon oederi (Weber) Körb.
Sarcosagium campestre var. campestre Sarcosagium campestre var. campestre (Fr.) Poetsch & Schied.
Sarcosagium campestre var. macrosporum Sarcosagium campestre var. macrosporum Coppins & P. James
Steinia geophana Steinia geophana (Nyl.) Stein
Stereocaulon condensatum Stereocaulon condensatum Hoffm.
Stereocaulon dactylophyllum var. dactylophyllum Stereocaulon dactylophyllum var. dactylophyllum Flörke
Stereocaulon delisei Stereocaulon delisei Bory ex Duby
Stereocaulon glareosum Stereocaulon glareosum (Savicz) H. Magn.
Stereocaulon leucophaeopsis Stereocaulon leucophaeopsis (Nyl.) P. James & Purvis
Stereocaulon nanodes Stereocaulon nanodes Tuck.
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