HORIZONTAL STRUCTURE OF THE QUERCUS-SPECIES COENOPOPULATIONS IN AN OAK-HORNBEAM FOREST

The dispersion of individuals in coenopopulations of O. cerris and Q. petraea was examined in a temperature deciduous forest in southwest Slovakia [Czechoslovakia] using a rectangular grid pattern analysis. Several statistical and pattern analysis techniques were applied with different results. Frequency distribution of tree density was close to Poisson variate. Measures of aggregation used indicate a random dispersion pattern. Estimated ground maps and spatial-arrangement-maps constructed by methods of computer graphics discovered tendency to aggregation in the Q. cerris coenopopulation along a diagonal of the sampling area. The 2 spp. are distributed independently of one another.