Ábrahám Levente (szerk.): Válogatott tanulmányok IX. - Natura Somogyiensis 24. (Kaposvár, 2014)
Szűcs D. - Kitti Horváth K. - Horváth Gy. F.: Comparing small mammal faunas based on barn owl (Tyto alba) pellets collected in two different lowland landscapes
314 Natura Somogyiensis According to post hoc Dunn-test, the proportion of this shrew was greater in a microregion of the Győr basin than in the two microregions of the Drava floodplain (CS vs. FVS: z = 2.83, P < 0.05; CS vs. NHS: z = 3.33, P < 0.01). In contrast, the relative frequency of the Lesser white-toothed shrew was significantly higher in the Drava flood- plain (H = 17.09,/’ < 0.01.). The post hoc test showed that the abundance of this species was significantly different in the comparison of two microregions of the Drava flood- plain and the Csomai-sík (DS vs. CS and FVS vs. CS: z = 3.19 - 3.23, P < 0.05). In the case of the field vole the Kruskal-Wallis ANOVA showed significant result (H = 13.79, P < 0.01) and difference of abundance was only reported by post hoc test between two microregions (FVS vs. CS: z = 3.03, P < 0.05). Furthermore, the European water vole had significantly higher relative abundance in the area of the Drava floodplain (FI = 13.31, P < 0.01). Dunn-test results considerably differened between microregions as well as in the case of Lesser white-toothed shrew (DS vs. CS and FVS vs. CS: z = 2.93 - 3.06, P < 0.05). Because of the exclusive presence of the root vole in the Győr basin, the statistical result was evident (H = 23.24, P < 0.05) and Dunn-test showed difference in one microregion of both landscapes (FVS vs. CS: z = 2.86, P < 0.05). Due to the differences of geographical distribution, the stripe-field mouse has higher proportion in the Drava floodplain than in the Győr basin (ANOVA: F = 5.87, P < 0.001). The post hoc LSD-test demonstrated that abundance differed significantly in the case of four sample pairs (microregions) (DS vs. CS: P = 0.0002; DS vs. KS: FVS vs. CS: P = 0.0011; FVS vs. CS: P = 0.0082; FVS vs. KS: P = 0.0161). For the other species there was no significant result of ANOVA between microregional landscapes. In addition, a faunistic assessment of shrews (Soricidae), voles (Arvicolinae) and mice (Murinae) was performed on this spatial scale. The proportion of three prey categories was shown in the map of the two mesoregions including the microregions (Fig. 6). Our results demonstrated that the Arvicolinae taxa had the largest share in the dietary composition, especially in the area of the NF1S, where these species showed a distribution over 59%. However, in one of the microregions of the Győr basin shrews gave about 50% of the whole sample because of extensive wetlands in that area, while voles only occurred with the relative rate of 30%. Significantly positive correlation was found between the frequency orders of each microregion by Spearman rank correlation analysis, which reflects the similarity of small mammal faunas on this spatial scale. The higher rank correlation value was Fig. 6: Frequency distribution of three taxa in microregions within the two landscapes
