Welsh Lichen Red List - Lichens of Wales
Welsh Lichen Red List - Lichens of Wales
Welsh Lichen Red List - Lichens of Wales
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Metallophytes<br />
Once <strong>Wales</strong> probably supported a significant assemblage <strong>of</strong> lichens associated with<br />
natural outcrops <strong>of</strong> heavy metal-rich rock. Due to the destruction <strong>of</strong> these outcrops by<br />
our mining activities the survival <strong>of</strong> metallophyte lichens is now almost entirely<br />
dependent on the conservation <strong>of</strong> old metal mine sites.<br />
Two special types <strong>of</strong> lichen are almost completely confined to these sites in <strong>Wales</strong>:-<br />
1. Those lichens that appear to in some way require heavy metals and only occur on<br />
heavy metal-rich substrates-the obligate metallophytes.<br />
2. Those lichens that tolerate heavy metals but elsewhere can be found in sites without<br />
such metals. Most <strong>of</strong> these species are probably poor competitors but can survive<br />
extreme conditions. In <strong>Wales</strong> they are mostly confined to metal-rich sites but elsewhere<br />
occur, for example, on exposed peat on the summit ridges <strong>of</strong> high mountains-the<br />
facultative metallophytes.<br />
The following species fall into one or other <strong>of</strong> these categories in <strong>Wales</strong> and any threatened<br />
site supporting more than 3 <strong>of</strong> these species should be subject to a detailed assessment.<br />
Acarospora sinopica Rhizocarpon cinereovirens<br />
Baeomyces placophyllus R. furfurosum<br />
Belonia incarnata R. oederi<br />
Epilichen scabrosa Sarcosagium campestre<br />
Gyalidea subscutellaris Steinia geophana<br />
Gyalideopsis crenulata Stereocaulon condensatum<br />
Lecanora epanora S. dactylophyllum<br />
L. gisleriana S. delisei*<br />
L. handelii S. glareosum<br />
L. subaurea S. leucophaeopsis<br />
Placopsis lambii S. nanodes<br />
Placynthiella hyporhoda S. pileatum<br />
Polyblastia agraria S. symphycheilium*<br />
Psilolechia leprosa Vezdaea spp.<br />
(* = species individually listed on Section 42 <strong>of</strong> the Natural Environment and<br />
Communities Act (2006) as being <strong>of</strong> principal importance in <strong>Wales</strong>)<br />
Rhestr o Gen Data Coch ar gyfer Cymru<br />
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