Ábrahám Levente: Biomonitoring a Dráva folyó magyarországi szakasza mentén 2000-2004 - Natura Somogyiensis 7. (Kaposvár, 2005)
Horváth, Gy., Molnár, Dániel - Csonka, Gergely: Population dynamics and spatial pattern of small mammals in protected forest and reforested area - Kisemlősök populációdinamikája és térbeli mintázata védett erdei és újraerdősödő területen
198 NATURA SOMOGYIENSIS Table 5: Results of the homogeneity test (G-test) between the two sample areas September) Grid A vs. Grid В G-values Speies A% B% Sorex araneus Crocidura leucodon Clethrionomys glareolus Apodemus agrárius Apodemus flavicollis 5.61 1.12 38.20 13.48 41.57 2.77 2.77 13.88 69.44 11.11 0.98 0.72 11.80*** 41.33*** 18.75*** *:p< 0.5,**:p< 0.01, ***: Table 6: Results of the p< 0.001 homogeneity test (G-test) between the two sample areas (November) Grid A vs. Grid В G-values Speies A% B% Sorex araneus Crocidura leucodon Clethrionomys glareolus Apodemus agrárius Apodemus flavicollis 1.07 2.15 37.63 0 59.13 0 18.91 41.89 39.18 0 1.17 15.31*** 0.22 54.32*** 883.15*** *:p<0.5,**:p<0.01, ***:/?<0.001 Results of homogeneity tests for September showed that the distribution of striped field mouse was again inhomogenous, in preference for Grid B. Similar inhomogeneity was received for the bank vole too, but this species remained to be present in higher numbers in the closed alder gallery forest. The former homogenous distribution of the yellow-necked wood mouse now changed: individuals of the population rather occupied the closed forest, thus the G-test for the distribution of relative frequencies revealed significant difference. For shrews, the statistical analysis indicated homogenous distribution in the two areas (Table 5.). The unexpected results described earlier for November capture data were confirmed by the G-tests too. Striped field mice were present only in the regrowing plot by then, clearly indicated by significant inhomogeneity. The same result was obtained for the yellow-necked wood mouse, its individuals captured in November in the closed forest only. Finally, the most striking piece of result was that the distribution of the bank vole turned the other way round: higher percentages were found in the regrowing plot than in the closed forest (Table 6.). Significant difference was found for the distribution of the white-toothed shrew, found in greater numbers in the regrowing forest, thus it is assumed that it prefers the vegetation structure found there. In the monitoring years before 2003 when trapping was done only in the strictly protected forest, it was primarily the common shrew whose population size could be estimated a from capture-recapture data. In the sample area of the closed alder gallery forest shrew density decreased considerably in 2003, therefore insufficient capture-recapture data were obtained, so it was not possible to apply estimation methods (MARK/CAPTURE). However, from data collected in 2004, we could perform population size estimations of the three dominant species {A. agrárius, A. flavicollis, C. glareolus). From capture or life history matrix on Grid A, estimations were made for all three populations. Although the bank vole was present in higher numbers in Grid В in November 2004, it was still not possible to perform population estimation for this area. The success of estimations is greatly influenced by recapture rates, i.e. the success of capture-mark-recapture, thus there were of course months in the two other species too
