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
HORVÁTH ET AL.: POPULATION DYNAMICS AND SPATIAL PATTERN 199 Fig. 3.: Estimated abundance values of striped field mouse {A. agrárius) and yellow-necked wood mouse (A. flavicollis) populations in Grids A and В of the sample area of Lankóci-forest in 2004 when data in the life history matrix proved to be insufficient for an estimation. The most estimations were obtained for the two Apodemus {A. agrárius and A. flavicollis) populations. Estimated population sizes were charted for each species, with data for Grids A and В shown in the same graph, the standard error of the estimation also indicated (Fig. 3.). Population size of the bank vole, thus, could be estimated for Grid A only. Quite similar results were obtained for August and September (August: 41 individuals/ha, September: 46 individuals/ha). In August it was the most fitting M th-estimator, (Mth: recapture probability is time-dependent and also depends on individual variability within the population), and in September the M 0-estimator (M 0 : recapture probability is constant in time) that proved to be suitable for population estimation. In November the estimated population size (11 individuals/ha) indicated well that individuals emigrate from the area, resulting in a population decline in the closed forest. When estimations were made from August and September data, high standard errors were obtained, thus variation coefficients produced percentages that were higher than acceptable (August: cv = 27.12 %, September: cv = 27.99 %), based on which the estimated values for these two months can not be regarded statictically acceptable. In November higher capture success produced acceptable estimation for this species, too (cv = 10.14 %) (Fig. 4.). Fig. 4.: Estimated abundance values of the bank vole (Clethrionomys glareolus) population in Grid A of the sample area of Lankóci forest
