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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

  331-338

  Zoltán Bátori

  Anna E. Vojtkó

  László Erdős

  András Vojtkó

  Views:

  98

  In 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.

• Ceratocephala testiculata (Crantz) Roth and further data to the flora of the foothills of Bükk Mts.('Bükkalja', NE Hungary)

  81-142

  András Schmotzer

  Views:

  223

  This paper reports new floristic data of 367 taxa (365 species and two hybrids) from the foothill region of Bükk Mts. ('Bükkalja', NE-Hungary) based on 5470 field collected data records. The data was collected between 1997–2014 and supplemented with herbaria (altogether 344 herbaria sheets). Data evaluation was based on the comprehensive Bükk Flora of András Vojtkó and further papers. Altogether 45 species were registered as previously unreported from the area, whereas three species had old data (Acer negundo, Elaeagnus angustifolia, Xanthium strumarium). Out of the newly registered species six native species inhabits natural habitats (Carex flacca, Ceratocephala testiculata, Glycerrhiza echinata, Gypsophila paniculata, Kochia laniflora, Marrubium vulgare), whereas five species represents the weed flora (Anthemis ruthenica, Chenopodium ficifolium, Eragrostis pilosa, Senecio vernalis, Xanthium strumarium). The majority of the newly observed species are adventives. Five species were also regarded as recent introduction regionally, although they are native in the country (mostly lowland species: Crypsis alopecuroides, Limonium gmelini subsp. hungaricum, Salsola kali, Scirpoides holoschoenus, Trifolium angulatum). Typical threats observed are landscape and habitat degradation by invasive alien species out of which 11 are newly added. Mass occurrences were detected for the following invasive alien species: Bidens frondosa, Impatiens glandulifera, Phytolacca esculenta, Xanthium italicum. 43 species are also registered, which did not have recently published data from the area. These species include more native elements representing different habitat preferences (dry grasslands, wet meadows, forest and weeds). In case of 65 species the unravelled new occurrences increased significantly, thus contributed to the clarification of their distribution pattern. It was found that the floristic data accumulated on a decade-scale are not sufficient for the analysis of floristic trends, but could serve as a good basis for surveying floristic gradients between the mountainous and lowland areas.