Bryofloristický příspěvek z Tišnovska

Two larger-scaled bryofloristic excursions and inventories occurred in 2011 in the Tišnov region, Southern Moravia. These events that brought together a greater-than-usual density of bryologists into the interesting region at the edge of Českomoravská vrchovina foothills and the warm region of Southern Moravia yielded a total of 233 recorded bryophyte taxa. The earlier relatively well-documented area is notable for the occurrence of both montane and dealpine elements, as well as many thermophilous species. Plagiopus oederianus, Saelania glaucescens, Scapania aspera or S. gymnostomophila belong to the most interesting confirmed species of the montane character, whereas Asterella saccata, Didymodon cordatus, Seligeria calcarea and Trichostomum caespitosum were the notable thermophilous bryophytes recorded (T. caespitosum rediscovered at the locality after 64 years!), while Philonotis capillaris might represent the rare element of middle to lower altitudes. The region seems to suffer most severely from degradation of xero-thermophilous vegetation, mostly caused by the gradual succession of woods.