Marsupella profunda: Difference between revisions
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'''''Marsupella profunda''''' ('''Western Rustwort''') is a [[Marchantiophyta|liverwort]] [[Endemism|endemic]] to Europe and known only from [[Portugal]], ([[Azores]] and [[Madeira]]), [[Spain]] ([[Canary Islands]]) and [[Great Britain]] ([[Cornwall]]).<ref name=JNCC>{{cite web|title=1390 Western rustwort|url=http://jncc.defra.gov.uk/protectedsites/sacselection/species.asp?FeatureIntCode=S1390|publisher=[[Joint Nature Conservation Committee]]|accessdate=28 January 2012}}</ref> |
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'''''Marsupella profunda''''' ('''Western Rustwort''') is a plant species of [[Marchantiophyta|liverwort]]. |
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==Distribution and habitat== |
==Distribution and habitat== |
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The species is rare in Britain; it is known from just |
The species is rare in Britain; it is known from just ten locations, all in Cornwall. These sites at [[Lower Bostraze and Leswidden SSSI|Lower Bostraze and Leswidden]], [[St Austell Clay Pits]] and [[Tregonning Hill]], are all protected as [[Sites of Special Scientific Interest]].<ref>{{cite web|title=Lower Bostraze And Leswidden|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/2000182.pdf|publisher=[[Natural England]]|accessdate=11 January 2012|year=1996}}</ref><ref name=StAustell>{{cite web|title=St Austell Clay Pits|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/2000425.pdf|publisher=[[Natural England]]|accessdate=11 January 2012|year=2000}}</ref><ref>{{cite web|title=Tregonning Hill|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/1007148.pdf|publisher=[[Natural England]]|accessdate=11 January 2012|year=1994}}</ref> |
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Within Cornwall, Western Rustwort is generally found growing on micaceous or clay waste substrates which are flat or gently sloping. Some patches occur on granitic rocks, usually where these are soft or crumbling. It appears to be a [[pioneer species]], the largest populations being found on surfaces showing the early stages of colonisation by other [[Bryophyta|bryophytes]] and by vascular plants.<ref name=StAustell /> |
Within Cornwall, Western Rustwort is generally found growing on micaceous or clay waste substrates which are flat or gently sloping. Some patches occur on granitic rocks, usually where these are soft or crumbling. It appears to be a [[pioneer species]], the largest populations being found on surfaces showing the early stages of colonisation by other [[Bryophyta|bryophytes]] and by vascular plants.<ref name=StAustell /> It disappeared from at least six Cornish sites between 1971 and 2005 due to shading from Common Gorse ''[[Ulex europaeus]]'' and Bramble ''[[Rubus fruticosus]]'' agg.<ref>{{cite book|last=Holyoak|first=David T|title=Bryophytes|year=2007|publisher=Croceago Press|location=Praze-an-Beeble|pages=72-104|edition=Second}}</ref> |
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==Conservation== |
==Conservation== |
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Revision as of 17:56, 28 January 2012
| Marsupella profunda | |
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| Species: | M. profunda
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| Marsupella profunda Lindb.
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Marsupella profunda (Western Rustwort) is a liverwort endemic to Europe and known only from Portugal, (Azores and Madeira), Spain (Canary Islands) and Great Britain (Cornwall).[1]
Distribution and habitat
The species is rare in Britain; it is known from just ten locations, all in Cornwall. These sites at Lower Bostraze and Leswidden, St Austell Clay Pits and Tregonning Hill, are all protected as Sites of Special Scientific Interest.[2][3][4]
Within Cornwall, Western Rustwort is generally found growing on micaceous or clay waste substrates which are flat or gently sloping. Some patches occur on granitic rocks, usually where these are soft or crumbling. It appears to be a pioneer species, the largest populations being found on surfaces showing the early stages of colonisation by other bryophytes and by vascular plants.[3] It disappeared from at least six Cornish sites between 1971 and 2005 due to shading from Common Gorse Ulex europaeus and Bramble Rubus fruticosus agg.[5]
Conservation
The species has several conservation designations. It is listed on Schedule 8 of the Wildlife and Countryside Act 1981, in Appendix 1 of the Bern Convention, and in Annex II of the European Community Habitats and Species Directive.
References
- ^ "1390 Western rustwort". Joint Nature Conservation Committee. Retrieved 28 January 2012.
- ^ "Lower Bostraze And Leswidden" (PDF). Natural England. 1996. Retrieved 11 January 2012.
- ^ a b "St Austell Clay Pits" (PDF). Natural England. 2000. Retrieved 11 January 2012.
- ^ "Tregonning Hill" (PDF). Natural England. 1994. Retrieved 11 January 2012.
- ^ Holyoak, David T (2007). Bryophytes (Second ed.). Praze-an-Beeble: Croceago Press. pp. 72–104.