TABLE 5.17 Allelopathic Effect of the Lichen Cladonia spp. on Tree Species

Tree species Lichen species Dry weight 32P uptake N content P content Jack pine Cladonia alpestris 56 62 85 81

Cladonia rangifera 60 56 83 71

White spruce Cladonia alpestris 58 48 77 62

Cladonia rangifera 64 43 79 54

Note: Values are expressed as percentage of the control trees without a lichen mulch. Source: After Fisher (1979).