Hyvärinen, M/ Crittenden, PD 1996: Cation ratios in Cladonia portentosa as indices of precipitation acidity in the British Isles. - New Phytologist132(4): 521-532. [RLL List # 163 / Rec.# 9002] Keywords: ACID RAIN/ AIR POLLUTION/ CATIONS/ CLADONIA/ ELEMENT ANALYSIS/ HEATHLAND/ PH
Abstract: 7 fig. 2 tab.