Distribution of gastropod character species in some vegetation succession lines of the Great Hungarian Plain

Bába, Károly (2002) Distribution of gastropod character species in some vegetation succession lines of the Great Hungarian Plain. Malakológiai Tájékoztató, 20. pp. 75-81. ISSN 0230-0648

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Abstract

The distribution of terrestrial gastropods was investigated in details in 16 plant communities from four major vegetation succession lines of the Great Hungarian Plain. Collections were made in 226 sampling sites via utilization of the classic quadrate method (10x25x25). The regional species constancy index was determined in relation to the plant communities, namely constant between 50–100%, subconstant between 30–50% and accessory below 30%. The number of constant and subconstant species was between 2 and 8 in the starting communities and 7–10 in the final or closing communities (except the degraded loess succession lines). Dominance values for the constant species in the starting communities were between 67–99 %. Meanwhile values of 60–81 % could have been determined in the final communities for the same species types. Consequently the constant and subconstant species types were the most frequently occurring species considering species richness in the plant communities under investigation.

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