Dr. Fűköh Levente szerk.: Malakológiai Tájékoztató 16. (Eger, 1997.)
SÓLYMOS,P.-NAGY, A.: The recent mollusc fauna of the szársomlyó (S Hungary): spatial pattern and microclimate
Table 4. Numbers of individuals on the basis of totalised data of 4 soil samples per each area. Legend: (T) collected with thinning out. Species Areas Sum total Species 1 2 3 4 5 6 7 8 9 Sum total Cochlicopa lubricella (Porro, 1838) 37 4 53 94 Truncatellina cylindrica (Ferussac, 1807) 44 70 96 217 88 262 198 84 1059 Truncatellina callicratis (Scacchi, 1833) 3 11 3 114 146 106 675 216 1274 Truncatellina claustralis (Gredler, 1856) 6 6 Truncatellina sp.indet. 66 101 56 2 411 188 574 598 207 2203 Granaria frumentum (Draparnaud, 1801) 288 1983 2 299 168 327 519 403 3989 Chondrina clienta (Westerlund, 1883) 11 67 6 51 3 138 Pupilla triplicala (Stuclcr, 1820) 357 80 437 Vallonia costata (0. F, Müller. 1774) 8 4 348 209 569 Vallonia pulchella (0. F. Müller, 1774) 3 10 244 104 55 416 Acanthinula aculeata (0. F. Müller, 1774) 71 1 72 Zehrina de tri ta (0. F. Müller, 1774) 49 159 274 681 397 296 32 84 1972 Punctum pygmaeum (Draparnaud, 1801) 5 5 Vitrinapellucida (0. F. Müller, 1774) 25 21 15 5 14 80 Aegopinella minor (Stabile, 1864) 122 42 164 Oxychilus inopinatus (Ulicny, 1887) 1 6 3 • 9 8 57 4 5 93 Umax cinereoniger Wolf, 1803 T T Li max sp. indet. 1 1 Euconulus fluvus (0. F. Müller, 1774) 3 44 10 66 123 Cecilioides acicula (0. F. Müller, 1774) 54 54 Cochlodina larninata (Montagu, 1803) 3 T T 3 Laciniaria plicata (Draparnaud, 1801) 17 T 219 169 107 4 516 Helicella obvia (Menke, 1828) 204 421 31 26 2 7 136 827 Euomphalia strigella (Draparnaud, 1801) 50 24 : 6 82 Helix pomatia Linnaeus, 1758 3 T 11 3 1 • T 18 Total of individuals 452 842 2874 90 2048 1291 1975 3084 1539 14195 V. pulchella belongs to the open and P. pygmaeum belongs to the closed group. P. pygmaeum is an example for ecostation change as Bei Bienko (1930) propounded it for orthopteras. Most of the recent local investigations presented in this article are uncomparable to the long-term, geological-scale surveys which did not concentrate on such a small area. The locality of the investigations allows us to separate the transitions of the main groups into spatial pattern subtypes. The differences between the states can be explained by local climatic variations. 3.3. The origins of spatial pattern The spatial distribution of molluscs reflects the spatial distribution of the conditions on which their living depends. The most deciding elements of the environment are: the living parts (primarily plants), the rocks types, soil types, and the atmosphere close to the surface. These factors have strong interrelations. Giving this concept precision is much more difficult than recognizing it. Fig. 5. Map of the Szársomlyó with the location of the sampling areas (1-9).
