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A new montane bryophyte species from the Mátra Mts, Hungary: Hymenoloma crispulum
11-18Views:217Due to the geomorphological situation and climatic conditions of Hungary, true montane climate is restricted to very few and small areas of higher elevation, with the highest peak (Mt Kékes, 1014 m) in the Mátra Mountains (North Central Hungary). During a bryofloristical survey in this region, a few cushions of a Boreo-arctic montane bryophyte species, Hymenoloma crispulum (Hedw.) Ochyra (syn.: Dicranoweisia crispula (Hedw.) Milde), was discovered at the steep northern slope of Mt. Kékes in an andesite boulder scree with cool and humid microclimate. H. crispulum is new to the Hungarian bryoflora and fits in well with other co-occurring vascular and cryptogamic taxa of northern-montane affinities. The population is very small and vulnerable, therefore it should be rated 'critically endangered' (CR) in an updated national red list.
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Dactylorhiza traunsteineri (Saut. ex Rchb.) Soó: an unexpected record in the Romanian flora
15-24Views:89Dactylorhiza Necker ex Nevski is a complex genus. The taxonomy of these dactylorchids is widely considered to be complicated due to relatively high morphological variability within species and high frequency of hybridization between species. During a floristic survey of the Valea Morii (Morii Valley, Malomvölgy) Nature Reserve in June 2017, a population of Dactylorhiza traunsteineri (Saut. ex. Rchb.) Soó, a species with uncertain presence in the Romanian flora was found. In the Morii Valley, this narrow-leaved marsh-orchid was encountered in fen-patches, in phytocoenoses of the plant association Orchido-Schoenetum nigricantis Oberd. 1957. Due to the cool and wet microclimate of the Morii Valley, many glacial relicts and other plant rarities (e.g. Tofieldia calyculata (L.) Wahlenb., Swertia perennis (L.), Liparis loeselii (L.) Rich., Ophioglossum vulgatum L. Schoenus nigricans L.) had been able to survive on strongly humid places on calcareous soils. This study reports the first occurrence of D. traunsteineri in Romania confirming the presence of a highly debated taxon. We also discuss the morphological features, habitat preference and conservation status of this new species in the Romanian Flora.
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Temperature and soil moisture regimes of the forested and non-forested dolines of the Bükk Mountains based on ecological indicator values
331-338Views:98In the study we aimed to investigate whether there are differences in the ecological conditions of the forested and non-forested dolines of the Bükk Mountains (northern Hungary). Transects for sampling the herb layer were established across three forested and three non-forested dolines in a north to south direction, traversing the deepest point of the dolines. Presence-absence data of each vascular herb and tree sapling were recorded in the plots. Borhidi’s indicator values for temperature (TB) and soil moisture (WB) were used to compare the ecological conditions along the slopes. Our results showed that there were remarkable differences between the temperature and moisture regimes of the forested and non-forested dolines. Both the temperature and moisture gradients were more pronounced along the slopes of the non-forested dolines than along the forested ones. These are due to the fact that forest cover together with the features of the regional climate of the area has a considerable mitigating effect both on the air temperature and soil moisture regimes of dolines.