Change of composition and diversity of species and grassland management between different grazing intensity in Pannonian dry and wet grasslands
2011
Investigations were carried out in wet and dry pasture. Coenological recordings were taken in
three zones. The first zone (“A”) located 0-50 m near the stable, second zone (“B”) located 50-150 m
from the stable, while the third zone (“C”) located farther than 150 m. We have carried out analyses of
ecological and environmental factors and life form types. Based on our results for both dry and wet
grasslands, quadrates of “A” zone were well isolated from the rest of the zones. Overgrazing, which
involves considerable trampling, vanishes differences among vegetations, thereby promotes weed and
disturbance tolerant rich vegetation. The lowest species number and diversity could be found here. Due to
the nitrogen enrichment due to the constant presence of livestock, drier and less heat demanding habitat
developed in the “A” zones, according to the environmental indicators. Because of the change in
management, conservation and diversity values of “C” zone increased, however, according to nature
protection values it underperformed compared to “B” zone. According to the sample area, wet grasslands
from the sandy areas of Kiskunsag, preserve nature protection values and grass composition better
moving away from stables, due to less grazing pressure. Drier backgrounds tolerate stronger grazing
pressure.
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