Ábrahám Levente (szerk.): Válogatott tanulmányok VIII. - Natura Somogyiensis 23. (Kaposvár, 2013)
Salamon-Albert É.: Climatic conditions and habitats in Belső-Somogy, Külső-Somogy and Zselic as vegetation-based landscape regions IV. Precipitation envelopes of mesic deciduous woodlands
84 Natura Somogyiensis woodlands (K2, 676 mm) have the lowest, beech woodlands (K5, 689 mm) have the medium and pedunculate oak-hombeam woodlands (Kla, 710 mm) have the highest values as well as by the quarterly variables [BIOCLIM 16 to 19]. Monthly mean precipitation and seasonality [BIOCLIM 13 to 15] are even less suitable for habitat differentiation. Comparing mesic woodland habitats by their precipitation envelopes and their threshold values first and last, pedunculate oak-hombeam woodlands show the lowest minimum, highest maximum and widest range opposite to beech woodlands with their highest minimum, lowest maximum and narrowest range, sessile oak hornbeam woodlands are positioned between the two mesic woodland habitats by the yearly and quarterly indices. Types of these woodlands are definitely ordered by the range of precipitation variables in each, as pedunculate oak-hombeam woodlands are the most multifarious, sessile oak hornbeam woodlands have a medium precipitation variability and beech woodlands are represented on the lowest level of variability. Generally, there was a high level of superimposition between the summarized precipitation density of semi-natural habitats (Á-NÉR) and mesic deciduous woodlands (K) or habitat types (Kla, K2, K5) in each as it was verified by the lack of dissimilarity (see Fig. 1). More detailed differences in precipitation envelopes can be anticipated by the analysis of kernel densities as functional differentiation in climate surface and niche segregation of semi-natural habitats as a whole and each (Fig. 2). Results are introduced as ecological suitabilities or unconveniencies of semi-natural habitats (A-NER) and precipitation traits of the habitats (Kla, K2, K5). Number of peaks as the kernel function of precipitation can be characterized with one to five Gaussian distributions per variable. Climate envelope of semi-natural habitats as a whole (Á-NÉR) is supremely divided by five kernels on annual sum of precipitation [BIOCLIM 12] and precipitation of warmest quarter [BIOCLIM 18], Average segregation of ecological niches by three kernels are detected on precipitation of driest month [BIOCLIM 14], precipitation of wettest [BIOCLIM 16] and coldest quarter [BIOCLIM 19], The least effective variable in density functions by two kernels is the precipitation of wettest month [BIOCLIM 13] and the seasonality [BIOCLIM 15], Climate envelope of pedunculate oak-hombeam woodlands (Kla) as a whole is divided into three kernels on annual sum of precipitation [BIOCLIM 12] and precipitation of wettest [BIOCLIM 16] and warmest quarter [BIOCLIM 18] done into two kernels by the others [BIOCLIM 13, 14, 15, 17, 19]. Climate envelope of sessile oak-hombeam woodlands (K2) as a whole is divided into four kernels on annual sum of precipitation [BIOCLIM 12], it is done into three kernels on precipitation of warmest [BIOCLIM 18] and coldest quarter [BIOCLIM 19]. It is segragated into two kernels on precipitation of wettest [BIOCLIM 13] and driest month [BIOCLIM 14], seasonality [BIOCLIM 15] and precipitation of wettest [BIOCLIM 16] and driest quarter [BIOCLIM 17], There are three kernel density functions of variable in that an empty habitat kernel as a non-competitive precipitation niche for any mesic woodland is appeared at the lowest values, namely the precipitation of the driest month [BIOCLIM 14], the driest quarter [BIOCLIM 16] and the coldest quarter [BIOCLIM 19],
