Investigation on lichen production of grassland communities of sandy soil II.

Lichen production was investigated on two types of sandy Grasslands over more than two years. Two maxima of production were observed, a minor one in spring and a major one in autumn. The degree of these depended on climatic factors. Path analysis was applied for determining (1) the order of importance of the climatic factors and (2) the role of these factors in the changes of the total lichen production of associations and their influence on the productivity of the two determinant species, viz., Cladonia magyarica and Cl. furcata. Lichen production should be investigated for a period longer than the vegetation period.