1 Introduction ................................................. 7
2 Aim and scope of the study .................................. 11
3 Study objects ............................................... 14
3.1 Study sites ............................................ 14
3.2 General characteristics of forest wetland types ........ 37
4 Methods ..................................................... 42
4.1 Changes of vegetation .................................. 42
4.2 Soil conditions ........................................ 45
5 Results ..................................................... 47
5.1 Changes of vegetation .................................. 47
5.1.1 Changes of vertical structures of
phytocenosis .................................... 47
5.1.2 Changes of species richness of vegetation ....... 51
5.1.3 Ecological indicator values ..................... 55
5.1.4 General changes of ground vegetation ............ 59
5.1.5 Detailed analysis of vegetation changes in
particular types of forest wetlands ............. 62
5.1.6 The dynamics of the DBH increase of stands as
the indicator of changes of species structure
of forest wetlands phytocoenosises .............. 70
5.2 The analysis of the succession of the vegetation on
the basis of the botanical composition of peat and
the stratigraphy of the deposit
5.3 Soil-water properties of habitats ...................... 85
6 Discussion .................................................. 96
6.1 Changes in the structure and in the species richness
of phytocoenosis ...................................... 105
6.2 Changes of ecological indicator values ................ 108
6.3 The pace and the direction of vegetation succession ... 110
6.4 Factors conditioning changes of the vegetation of
wetlands .............................................. 116
7 Conclusions ................................................ 118
References .................................................... 120
The photographs of chosen sample plots of forest wetlands ..... 125
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