Briffa, K.R., Wigley, T.M.L., Davies, T.D., Landsberger, S., Schweingruber, F.H. and Johansson, S., 1995
“A tree-ring-based study of Sitka spruce growth in Afan Forest, South Wales: ring-width, wood density and chemical analysis.”
Chapter 9 in: Decline in Sitka Spruce on the South Wales Coalfield (Ed. M.P. Coutts), pp.75-94 Forestry Commission Technical Paper 9, Forestry Commission, Farnham, Surrey. (R)
(keywords: tree rings UK chemistry proxy climate change chemistry)
Briffa, K.R., Wigley, T.M.L., Davies, T.D., Landsberger, S., Schweingruber, F.H. and Johansson, S., 1989
“Sitka Spruce Decline, Afan 1 Forest, South Wales: Chemical, Wood Density and Ring-width Analyses.”
Final Report to N.E.R.C. - Contract No.GR3/6403A, 157pp Climatic Research Unit, University of East Anglia, Norwich.
(keywords: dendro tree rings UK regional methodology)