Neophytes in Pannonian hardwood floodplain forests - History, present situation and trends

Along the time gradient, there is a significant increase in the number and cover of neophytes between analyzed periods in the Pannonia. Plots from Slovakia had higher number and cover of neophytes in comparison with plots from Hungary from the same periods. Eight ecological factors were involved in the minimal adequate GLM - with six of them being significant and two being close to the significant level. In a broader analysis, where more ecological factors were included, time emerged as one of the most significant factors positively affecting the number of neophytes. The most important ecological factor is the amount of nutrients. Other significant factors are light, soil reaction, cover of herb layer and moisture.