Stagnant roe deer population as a consequence of wild boar and red fox impact.

This publication presents the mapped bag records of roe deer (Capreolus capreolus L.), wild boar (Sus scrofa L.) and red fox (Vulpes vulpes L.) during the hunting seasons 1987/1988 and 1993/1994 for 54 districts in the land of North-Rhine Westphalia (Fig. 1 to 3). The intention is to show the geographical distribution of bags of species living together with regard to an immense increase in an 8 year period 1987/1988 until 1994/1995. For the principally wild boar region -17 districts in South and East-the bag records of rue deer as dependent animal were correlated sith those of sows and foxes fur each of the eight years as well as the records of woodland (Tab. 1). The 8 coefficient time-roms show the change of prognostication wild boar calculations and in comparison the high significant positive red fox correlations. The importance of woodland seems to decrease. Finally, 8 linear multiple regressions of roe deer bag with values of competitors and woodland present by standardized regression coefficients the change to higher significance from the 1989/1990 season (Tab. 2 and Fig. I). It must be assumed, that since that season the red fos causes considerable damage by preying upon fawns, whereas the wild boar causes unfavorable aftereffects on roe Jeer populations by driving them out of the habitat. When, with regard to the short 8 year bag-files, arguments for a biological equilibrium of these 3 species can be pointed our, in that case should carefully examined the hunting tags in the season 1994/1995 (Fig. 4).