Natural Reserve Chynoriansky luh floodplain, its ecology and biometry of dominant herb species
2006
Kuklová, M.,Slovak Academy of Sciences, Zvolen (Slovak Republic). Institute of Forest Ecology | Kukla, J.,Slovak Academy of Sciences, Zvolen (Slovak Republic). Institute of Forest Ecology
Fluvisols of the Nature Reserve (NR) Chynoriansky luh floodplain situated at the confluence of the rivers Bebrava and Nitra in W Slovakia have been formed from argillic, slightly carbonaceous alluvia deposed on gravel-sand terrace. In the neutral soils gleyed at depths of or equal 50 cm, the ground water fluctuates in general from 0.5-2.5 m. The group of forest types Ulmeto-Fraxinetum carpineum is dominated by the species Allium ursinum, locally associated with Hedera helix, Mercurialis perennis and Galeobdolon luteum species in the 5 phytocoenoses. The mean parameter values of these species (folloving the same sequence) were: numbers of shoots per square m 92 ± 42.7 s.d (standard deviation), 97 ± 103 s.d., 15 ± 10 s.d. and 27 ± 18 s.d., plant length 44.9 cm ± 7.3 s.d., 14.7 cm ± 2.9 s.d., 33.05 cm ± 7.4 s.d. and 31.0 cm ± 13.4 s.d., shoot weight 0.425 g ± 0.166 s.d., 0.240 g ± 0.092 s.d., 0.363 g ± 0.006 s.d. and 0.261 g ± 0.189 s.d., phytomass 42.2 g per square m ± 25.7 s.d., 27.68 g per square m ± 30.4 s.d., 6.3 g per square m ±5.3 s.d. and 9.5 g per square m ± 10.9 s.d., the energy content 17 742 J.g-1 ± 527 s.d., 18 967 J.g-1 ± 407 s.d., 16 871 J.g-1 ± 322 s.d. and 17 167 J.g-1 ± 102 s.d. The weight of the mean Allium ursinum shoot was 1.468 g, from which were aboveground organs 29%, bulbils 57% and roots 14%. The total primary production in Allium ursinum phytocoenoses was 145.4 g.square m, from which were aboveground organs 29%, bulbils 58% and roots 13%. The mean shoots lenght of Allium ursinum, Mercurialis perennis and Galeobdolon luteum species growing in the ecological conditions of 5th phytocoenoses differed on significance level P > 0.0001.
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