O. Gy. Dely szerk.: Vertebrata Hungarica 22. (Budapest, 1984)

Korsós, Z.: Comparative niche analysis of two sympatric lizard species (Lacerta viridis and Lacerta agilis) 5-14. o.

Table 1. Number of lizard specimens observed, captured or taken into the various analyses Number of Number of specimens taken into the analysis of activity 10 observed Recaptures p >> periods nteni Species Year observed mark aclima bles types ationa ories veloci he summer o o x: o specimens pc. % mien varia soil veget categ wind sprin summer stom; Lacerta viridis 1980 44 28 3 10. 7 _ 44 44 _ 19 24 _ Lacerta viridis 1981 total 38 82 18 46 5 8 27. 8 17.4 19 19 38 82 38 82 38 38 10 29 27 51 16 Lacerta agilis 1980 35 27 5 18.5 35 35 22 13 Lacerta agilis 1981 45 31 12 38.7 27 45 45 45 27 18 Lacerta agilis total 80 58 17 29.3 27 80 80 45 49 31 21 Determining the proportion of soil particles smaller than 0.002 mm In the samples (i.e. clay) we can obtain information on the mechanical composition or physical properties of the soil types. In the study area the clay content was between 21.20 - 34.44 %. This refers uniformly to adobe clayey adobe texture. Comparing the soil samples to the capture points of the lizards (i.e. determining whether the populations are distinguishable or not only on the basis of the soil texture where they occur), the relative frequency distributions coincide almost completely. The value of overlap is 91 %. Fig. 1. Niche volumes of the two species bordered by the microclimatic variables