Ábrahám Levente (szerk.): Válogatott tanulmányok VII. - Natura Somogyiensis 22. (Kaposvár, 2012)
Salamon-Albert É.: Climatic conditions and habitats in Belső-Somogy, Külső-Somogy and Zselic as vegetation-based landscape regions III. Temperature envelopes of mesic deciduous woodlands
36 Natura Somogyiensis Discussion Previous studies suggest, that temperature variables could have a less significant role in the existence of woody habitat types in the landscape region, opposite to precipitation ones (Salamon-Albert et al. 2010a,b, 2011). According to our current results, some temperature variable was investigated forming significant difference to semi-natural regional envelope or among some type of mesic deciduous woodlands. In spite of relative narrow ranges of temperature variables, whole multipeak distributions were resulted for the regions, but the exception of BIOCLIM-3 the isothermality as the ratio of mean diurnal range/temperature annual range. Among temperature variables formulating range and seasonality, BIOCLIM-2 the mean diurnal temperature range resulted less complicated but significantly different habitat envelopes: sessile oak hornbeam woodlands (K2) and beech woodlands (K5) occur at low, pedunculate oak-hornbeam woodlands (Kla) does at medium and high values. BIOCLIM-4 resulted the most complicated regional and habitat envelopes containing four Gaussian multipeaks by the regional habitats as well as in the woodland types. Along yearly temperature seasonality scale habitats are placed in ascending order: pedunculate oak-hornbeam woodlands (Kla) are positioned at low and medium, beech woodlands (K5) at medium and sessile oak hornbeam woodlands (K2) at medium to high values of seasonality. The third member of temperature variety, BIOCLIM-7 show a similar shift of mesic woodlands to the temperature seasonality of the year by pedunculate oak-hornbeam woodlands (Kla) appear at lowest values, sessile oak hornbeam woodlands (K2) and beech woodlands (K5) does at medium and highest values of the range. Variables representing absolute minimum and maximum values, mesic woodland habitats are weakly diffrentiated by BIOCLIM-5 and BIOCLIM-6. There is a moderate shifting in pedunculate oak-hornbeam woodlands (Kla) to the higher values by the minimum temperature of coldest month additionally. Among mean variables of temperature, all of mesic woodland habitats are distributed identical to semi-natural woodland habitats by BIOCLIM-1 the mean annual temperature and BIOCLIM-8 the mean temperature of wettest quarter. By BIOCLIM-9 the mean temperature of driest quarter and BIOCLIM-11 the mean temperature of coldest quarter, pedunculate oak-hornbeam woodlands (Kla) are shifted into the higher values of the range, and significantly differed from by sessile oak hornbeam woodlands (K2) and beech woodlands (K5) by the latter one. Evaluating temperature preference described by habitat envelope, BIOCLIM-1 and BIOCLIM-5 is not relevant for habitat differentiation in any way. Various patterns represented by the multipeak ratios in habitat distribution is represented by BIOCLIM-8 the mean temperature of wettest quarter. By mean temperature variables a moderate shifting in habitat envelope of pedunculate oak-hornbeam woodlands (Kla) are indicated, sessile oak hornbeam woodlands (K2) and beech woodlands (K5) are differential from it but similar to each other. The most significant differentiation was resulted by range and seasonality variables (BIOCLIM-2, -4, -7), describing pedunculate oak-hornbeam woodlands (Kla) as a highly separated habitat type with higher diurnal but lower seasonal and yearly values in temperature envelopes.
