LONG-TERM CHANGES IN THE FIELD LAYER OF OAK AND OAK-HORNBEAM FORESTS UNDER THE IMPACT OF DEER AND MOUFLON

被引:33
作者
CHYTRY, M
DANIHELKA, J
机构
[1] Department of Systematic Botany and Geobotany, Masaryk University, Brno, CZ-611 37
[2] Protected Landscape Area Pálava, Mikulov, CZ-629 01
来源
FOLIA GEOBOTANICA & PHYTOTAXONOMICA | 1993年 / 28卷 / 03期
关键词
GRAZING; MULTIVARIATE ANALYSIS; PHYTOSOCIOLOGICAL DATA; SPECIES EXCHANGE; VEGETATION ANIMAL INTERACTIONS;
D O I
10.1007/BF02853510
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The resampling of 46 phytosociological plots 39 years later is used to characterize changes in the field layer of oak and oak-hornbeam forests in the South-East of the Czech Republic, where high densities of fallow deer, red deer and mouflon are kept in game preserves. Detrended correspondence analysis is used to demonstrate the general pattern of change. Changes in particular species performance, cover of field and shrub layers, diversity, life form spectrum and performance of zoochores are described. It is suggested that with increasing grazing pressure, native forest species retreat while the performance of species preferring soils rich in nitrogen and species of ruderal habitats increases. Simultaneously, mesic species are gradually replaced by xeric ones. Possible causes of these changes are discussed.
引用
收藏
页码:225 / 245
页数:21
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