References
- Arts, T. 1994. Rhizoidal tubers and protonemal gemmae in European Ditrichum species. Journal of Bryology, 18: 43–61. doi: 10.1179/jbr.1994.18.1.43
- Bates, J.W. 2011. BBS Bryophyte Ecology Group. Bryophyte habitats survey. Recorders’ instructions – revised September 2011. Unpublished report, British Bryological Society.
- Bebber, D.P., Marriott, F.H.C., Gaston, K.J., Harris, S.A. & Scotland, R.W. 2007. Predicting unknown species numbers using discovery curves. Proceedings of the Royal Society B: Biological Sciences, 274: 1651–8.
- Bell, D., Long, D.G. & Hollingsworth, P.M. 2013. The use of DNA barcoding to address major taxonomic problems for rare British bryophytes. Unpublished report, Royal Botanic Garden Edinburgh.
- Blockeel, T.L., Bosanquet, S.D.S., Hill, M.O. & Preston, C.D. 2014. Atlas of British and Irish bryophytes. Newbury: Pisces Publications.
- Buckley, J.A. 1992. The Cornish mining industry: a brief history. Penryn: Tor Mark Press.
- Callaghan, D.A. 2012a. Bryophyte survey and condition assessment of Phoenix United Mine SSSI/SAC, Cornwall. Unpublished report to Natural England.
- Callaghan, D.A. 2012b. Bryophyte survey and condition assessment of Crow’s Nest SSSI/SAC, Cornwall. Unpublished report to Natural England.
- Callaghan, D.A. 2016. Ditrichum cornubicum at Crow’s Nest and Phoenix United Mine. Unpublished report to Natural England.
- Callaghan, D.A. & Bowyer, H. 2011. Chemical characteristics of the soil occupied by Cephaloziella massalongi and C. nicholsonii in Cornwall (UK). Journal of Bryology, 33(2): 170–3. doi: 10.1179/1743282011Y.0000000006
- Campbell, C., Kelly, D.L., Smyth, N., Lockhart, N. & Holyoak, D.T. 2017. Genetic variation in the Red-Listed moss Ditrichum cornubicum Paton (Ditrichaceae) and implications for its conservation. Journal of Bryology, 39(2): 141–51. doi: 10.1080/03736687.2016.1232041
- Davis, R.D. & Carlton-Smith, C.H. 1984. An investigation into the phytotoxicity of zinc, copper and nickel using sewage sludge of controlled metal content. Environmental Pollution Series B, Chemical and Physical, 8(3): 163–85. doi: 10.1016/0143-148X(84)90016-8
- Gál, J., Hursthouse, A., Tatner, P., Stewart, F. & Welton, R. 2008. Cobalt and secondary poisoning in the terrestrial food chain: data review and research gaps to support risk assessment. Environment International, 34: 821–38. doi: 10.1016/j.envint.2007.10.006
- Gaston, K.J. 2003. The structure and dynamics of geographic ranges. Oxford: Oxford University Press.
- Hill, M.O., Blackstock, T.H., Long, D.G. & Rothero, G.P. 2008. A checklist and census catalogue of British and Irish bryophytes. Cardiff: British Bryological Society.
- Hodgetts, N.G. 2011. A revised Red List of bryophytes in Britain. Field Bryology, 103: 40–9.
- Holyoak, D.T. 2000. Bryophyte interest and conservation importance of former metalliferous mine sites in Cornwall. English Nature Reports, No. 328. Peterborough: English Nature.
- Holyoak, D.T. 2003. Interim report to English Nature on Ditrichum cornubicum and other rare bryophytes at Phoenix United Mine SSSI and Crow’s Nest SSSI, East Cornwall, February 2003. Unpublished report to English nature.
- Holyoak, D.T. 2005. Status and conservation of Ditrichum cornubicum and other rare bryophytes at Phoenix United Mine SSSI and Crow’s Nest SSSI, East Cornwall: report to English Nature on work during 2003-2005. Unpublished report to English Nature.
- Holyoak, D.T. 2007. Short report to Natural England on bryophyte population monitoring and habitat management work carried out in Cornwall during January – April 2007. Unpublished report to Natural England.
- Holyoak, D.T. 2009. Surveys and habitat management for threatened bryophytes in Cornwall and Devon, 2009. Unpublished report.
- Holyoak, D.T. 2012. The bryophytes of Cornwall and the Isles of Scilly [accessed 5 February 2018]. Available at: http://www.cisfbr.org.uk
- Holyoak, D.T. & Lockhart, N. 2009. Notes on some rare and newly recorded bryophytes of metalliferous mine sites in Ireland. Journal of Bryology, 31(4): 267–82. doi: 10.1179/037366809X12469790518402
- Holyoak, D.T. & Lockhart, N. 2011. A survey of bryophytes and metallophyte vegetation of metalliferous mine spoil in Ireland. Journal of the Mining Heritage Trust of Ireland, 11: 3–16.
- Holyoak, D.T., Clements, R., Coleman, M.R.J. & MacPherson, K.S. 2000. Notes on the status and ecology of Ditrichum cornubicum. In: D.T. Holyoak, ed. Bryophyte interest and conservation importance of former metalliferous mine sites in Cornwall. English Nature Reports, No. 328. Peterborough: English Nature, pp. 40–50.
- IUCN. 2012. IUCN Red List Categories and Criteria, version 3.1. 2nd ed. Gland, Switzerland & Cambridge, UK: IUCN.
- IUCN. 2017. The IUCN Red List of Threatened Species, version 2017-3 [accessed 5 December 2017]. Available at: http://www.iucnredlist.org
- Johnson, C.C., Ander, E.L., Cave, M.R. & Palumbo-Roe, B. 2012. Normal background concentrations (NBCs) of contaminants in English soils: final project report. Nottingham: British Geological Survey.
- Kapustka, L.A., Eskew, D. & Yocum, J.M. 2006. Plant toxicity testing to derive ecological soil screening levels for cobalt and nickel. Environmental Toxicology and Chemistry, 25: 865–74. doi: 10.1897/04-645R.1
- Lockhart, N., Hodgetts, N.G. & Holyoak, D.T. 2012. Rare and threatened bryophytes of Ireland. Bangor: National Museums Northern Ireland.
- NE. 2008. Soil texture. Natural England Technical Information Note TIN037. Peterborough: Natural England.
- Paschke, M.W. & Redente, E.F. 2002. Copper toxicity thresholds for important restoration grass species of the western United States. Environmental Toxicology and Chemistry, 21: 2692–7. doi: 10.1002/etc.5620210207
- Paton, J.A. 1976. Ditrichum cornubicum, a new moss from Cornwall. Journal of Bryology, 9: 171–5. doi: 10.1179/jbr.1976.9.2.171
- Persson, H. 1956. Studies in copper mosses. Journal of the Hattori Botanical Laboratory, 17: 1–18.
- Pescott, O. 2016. Revised lists of nationally rare and scarce bryophytes for Britain. Field Bryology, 115: 22–30.
- Quantum GIS Development Team. 2018. Quantum GIS Geographic Information System. Open Source Geospatial Foundation Project. Available at: http://qgis.osgeo.org
- R Core Team. 2018. R: a language and environment for statistical computing. Vienna: R Foundation for Statistical Computing.
- Rooney, C.P., Zhao, F.J. & McGrath, S.P. 2006. Soil factors controlling the expression of copper toxicity to plants in a wide range of European soils. Environmental Toxicology and Chemistry, 25: 726–32. doi: 10.1897/04-602R.1
- Ross, S.M., Wood, M.D., Copplestone, D., Warriner, M. & Crook, P. 2007. UK Soil and Herbage Pollutant Survey. UKSHS Report No. 7. Environmental concentrations of heavy metals in UK soil and herbage. Bristol: Environment Agency.
- Shambrook, H.R. 1982. The Caradon and Phoenix Mining Area. British Mining No 20. Banbury: Northern Mine Research Society.
- Shaw, J. 1987. Evolution of heavy metal tolerance in bryophytes. II. An ecological and experimental investigation of the copper moss, Scopelophila cataractae (Pottiaceae). American Journal of Botany, 74: 813–21. doi: 10.1002/j.1537-2197.1987.tb08685.x
- Shaw, A.J. & Renzaglia, K.S. 2004. Phylogeny and diversification of bryophytes. American Journal of Botany, 91: 1557–81. doi: 10.3732/ajb.91.10.1557
- Sheppard, S.C. 1992. Summary of phytotoxic levels of soil arsenic. Water, Air and Soil Pollution, 64: 539–50. doi: 10.1007/BF00483364
- Smith, C.W., Aptroot, A., Coppins, B.J., Fletcher, A., Gilbert, O.L., James, P.W. & Wolseley, P.A. 2009. The lichens of Great Britain and Ireland. London: British Lichen Society.
- Stace, C. 2010. New flora of the British Isles. Cambridge: Cambridge University Press.
- Tyler, G. 1990. Bryophytes and heavy metals: a literature review. Botanical Journal of the Linnean Society, 104: 231–53. doi: 10.1111/j.1095-8339.1990.tb02220.x
- Whiting, S.N., Reeves, R.D., Richards, D., Johnson, M.S., Cooke, J.A., Malaisse, F., Paton, A., Smith, J.A.C., Angle, J.S., Chaney, R.L., Ginocchio, R., Jaffré, T., Johns, R., McIntyre, T., Purvis, O.W., Salt, D.E., Schat, H., Zhao, F.J. & Baker, A.J.M. 2004. Research priorities for conservation of metallophyte biodiversity and their potential for restoration and site remediation. Restoration Ecology, 12: 106–16. doi: 10.1111/j.1061-2971.2004.00367.x