Habitat preference of Primula × brevistyla in the Cuha valley (Bakony Mountains, Hungary)

Bauer, N. and Cservenka, J. (2002) Habitat preference of Primula × brevistyla in the Cuha valley (Bakony Mountains, Hungary). Acta Botanica Hungarica, 44 (3-4). pp. 209-222. ISSN 0236-6495

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Abstract

Habitat characteristics of the Primula × brevistyla hybrid zone developed in the Zörög Hill (Bakony Mts, Transdanubian Middle Range) containing even backcrossed individuals uniquely in Hungary - and we might say that uniquely even in Europe - are presented here applying Borhidi's ecological indicator values. The intermediate feature of the relatively narrow (some ten metres wide) zone rich in hybrids is well represented by the obtained light-, humidity- and temperature spectra comparing to those of the adjacent areas. The habitat most favourable for the hybrids can be found in a nudum like hornbeam-oak wood association developed on a steep western slope. Beyond the assessment of ecological indicator values we also tried to reveal other factors playing role in the long-term survival of the hybrid population, from which by our studies a community structural factor, the low ground coverage and therefore the resulting weak competition proved to be the most significant.

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