Research Article

Variation in Nectar Volume and Sugar Concentration of Allium ursinum L. ssp. ucrainicum in Three Habitats

Table 1

Characteristics of the sampled forest stands.

Stand IDLocation; latitude (°); longitude (°); elevation (m); aspect; slope (°)Bedrock; soil type; soil pH (H2O; KCl) H: humus contentPlant association; status; dominant species in canopy layer (c); shrub layer (s); herb layer (h)Site descriptionStatus of Allium ursinum ssp. ucrainicum

Site 1
Orfű valley
West-Mecsek hills
N 46° 0 7 . 0 4 1 ; E 18°10.825′; 370 m; NE; 26°
Loess; brown forest soil with clay illuviation (luvisol); pH: 4.97; 4.05; H: 5.54%Sessile oak-hornbeam association: Asperulo taurinae-Carpinetum Soó et Borhidi in Soó, 1962; zonal; c: Carpinus betulus, Fagus sylvatica, Quercus dalechampii; s: scarce; h: Allium ursinum ssp. ucrainicum The middle of a typical occurrence of sessile oak-hornbeam forest.Optimal, cool and humid; dominant

Site 2
Tubes hill
Mid-Mecsek hills;
N 46°06.65 2 ;E 18°11.899′; 535 m; S-SW; 26°
Limestone; rendzina soil (leptosol); pH: 6.37; 5.91; H: 6.93%Silver lime-flowering ash rock forest association: Aconito anthorae-Fraxinetum orni (Borhidi-Kevey 1996); edaphic; c: Tilia argentea, Quercus cerris, Q. pubescens and Q. virgiliana, Fraxinus ornus s: Cornus mas h: Allium ursinum ssp. ucrainicum Close to the border of the calciphilous oak association (Tamo-Quercetum virgilianae).Not optimal, warm and dry; dominant

Site 3
Árpád peak
East-Mecsek hills
N 46°08.511′; E 18°15.386′; 410 m; NE; 8°
Loess; brown forest soil with clay illuviation (luvisol);pH: 4.44; 3.51;H: 2.29%Sessile oak-hornbeam association: Asperulo taurinae-Carpinetum Soó et Borhidi in Soó 1962; zonal; c: Quercus dalechampii, Carpinus betulus; s: sparse, Crataegus oxyacantha, h: Melica uniflora, Allium ursinum ssp. ucrainicum Next to the border of Turkey oak wood. This habitat is receiving relatively more irradiation from the direction of the Turkey oak wood.Not optimal, less humid, more acidic; mosaic appearance