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Long-Term Changes in the Field Layer of Oak and Oak-Hornbeam Forests under the Impact of Deer and Mouflon

Milan Chytrý and Jiří Danihelka
Folia Geobotanica & Phytotaxonomica
Vol. 28, No. 3 (1993), pp. 225-245
Published by: Springer
Stable URL: http://www.jstor.org/stable/4181199
Page Count: 21
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Long-Term Changes in the Field Layer of Oak and Oak-Hornbeam Forests under the Impact of Deer and Mouflon
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Abstract

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.

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