Resurvey of the Corticolous Lichen flora of Epping Forest
DAVIES, L., PURVIS, O.W., CHIMINOIDES, J. (2002) Effects of NOx on epiphtyic lichens in London. In:
Effects of NOx and NH3 on lichen communities and urban ecosystems. (Eds. CEH Edinburgh) DEFRA.
DEPARTMENT FOR ENVIRONMENT, FOOD & RURAL AFFAIRS (2000). The Air Quality Strategy for
England, Scotland. Wales and Northern Ireland. Working Together for Clean Air. Cm4548 SE 20003/3
and NIA 7. The Stationery Office Ltd.
GREATER LONDON AUTHORITY (2002) Mayor's Draft Air Quality Strategy, (http://
www.1ondon.gov.uk)
HAWKSWORTH, D.L. & MCMANUS, P.M. (1992) Changes in the lichen flora on trees in Epping Forest
through periods of increasing and then ameliorating sulphur dioxide air pollution. Epping Naturalist
71: 92-101.
HAWKSWORTH, D.L., ROSE, F. & COPPINS, B.J. (1972) Changes in the lichen flora of England and
Wales attributable to pollution of the air by sulphur dioxide. In: Air Pollution and Lichens. (Eds.) Ferry,
B.W., Baddeley, M.S. and Hawksworth, D.L. Athlone Press.
HAWKSWORTH, D.L. & ROSE, F. (1970) Qualitative scale for estimating sulphur dioxide air pollution in
England and Wales using epiphytic lichens. Nature 227: 145-148.
JAMES, P.W., PURVIS, O.W. & DAVIES, L. (2002) Epiphytic lichens in London. Bulletin of the British
Lichen Society 90: 1-3.
JAMES, P.W., HAWKSWORTH, D.L. & ROSE, F. (1977). Lichen communities in the British Isles: a
conspectus. In Lichen Ecology (M.R.D. Seaward, Ed.): 295-413. London Academic Press.
KING'S COLLEGE, LONDON (ENVIRONMENTAL RESEARCH GROUP) (2002). Stage 4 Air Quality
Review & Assessment for the London Borough of Waltham Forest. Commissioned by London Borough
of Waltham Forest, (http://www.lbwf.gov.uk).
LAUNDON, J.R. (1970) London's Lichens. London Naturalist 49: 20-66.
PAULSON, R. & THOMPSON, PG. (1911) Report on the lichens of Epping Forest. First paper. Essex
Naturalist 18: 276-286.
PAULSON, R. & THOMPSON, P.G. (1913) Report on the lichens of Epping Forest. Second Paper. Essex
Naturalist IT. 90-105.
PAULSON, R. & THOMPSON, P.G. (1920). Supplemental report on the lichens of Epping Forest. First
paper. Essex Naturalist 19: 27-30.
PAULSON, R. (1918). Notes on the ecology of lichens with special reference to Epping Forest. Essex
Naturalist 18: 276-286.
PURVIS, O.W. (1989) Report on the lichens of Burnham Beeches and the impact of the proposed quarry
workings on its lichen communities. Report for the Corporation of London. Natural History Musuem (BM).
PURVIS, O.W., BAMBER, R., CHIMONIDF.S, J., DIN, V.,EROTOKRITOU, L., JEFFRIES, T. & JONES,
G. (2001) Burnham Beeches lichen monitoring: Phase 2. Report for the Corporation of London. Natural
Histoiy Museum (BM).
ROSE, F. & COPPINS, S. (2002). Site assessment of epiphytic habitats using behen indices. In: Monitoring
with Lichens - Monitoring Lichens. Eds. Nimis, P.L., Scheidegger C.,Wolseley,A. Kluwer Academic
Publishers
ROSE, E, & HAWKSWORTH, D.L. (1981) Lichen recolonisation in London's cleaner air. Nature: 289.
SANDERSON, NA. (1998) New Forest epiphytic lichen database. Volume 4. Part 3 Summary of Results.
Neil Sanderson Botanical Survey & Assessment, neilsand@dircon.co.uk.
76
Essex Naturalist (New Series) 20 (2003)