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Turkey oak forests on sand (Fraxino orno-Quercetum cerridis) in Vértesalja (Hunga-ry)
34–57Views:349Here we evaluate the phytosociological characteristics of the turkey oak forests on sand (Fraxino orno-Quercetum cerridis) found at the northern foothills of the Vértes Hills, Hungary. Using the traditional Braun-Blanquet method, 20 vegetation samples were collected and compared with turkey oak forests growing in similar ecological situations in other parts of the country. The traditional and multivariate analyses showed that our samples were quite different from the compared forests, and only the forests in the Bakonyalja and the Pilis Mts showed some similarity with the compared forests. Our samples had the lowest proportion of Quercetea pubescentis-petraeae species among the compared forests, and the highest proportion of specialists (Corydalis pumila, Daphne laureola, Doronicum hungaricum, Lychnis coronaria, Physocaulis nodosus, Primula veris, Scutellaria columnae, Sorbus domestica and Veratrum nigrum). The samples were well separated from the compared forests and formed a distinct group.
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Oak-hornbeam and turkey oak forests growing on sand on the foothills of the Pilis Range (Corydali pumilae-Carpinetum, Fraxino orno-Quercetum cerridis)
79–105Views:327We studied the phytosociological characteristics of hornbeam and turkey oak dominated forests growing on sand at the southwestern foot of the Pilis Mountains. Here we present the results of analyses of 10 relevés of each community. The species composition of the hornbeam forest samples is characterized by a relatively high proportion of Fagetalia species. Notable species in the community are Aconitun vulparia, Berberis vulgaris, Epipactis helleborine agg., Galanthus nivalis, Geranium lucidum, Lilium martagon, Omphalodes scorpioides, Piptatherum virescens, Primula veris, Scilla vindobonensis, Sorbus aria agg., S. domestica, Veratrum nigrum, and Waldsteinia geoides. In the turkey oak forests, species characteristic of the class Quercetea pubescentis-petraeae have the highest proportion. Notable and locally typical species occurring in the community are Anthericum ramosum, Digitalis grandiflora, Iris variegata, Piptatherum virescens, Primula veris, Achillea distans, Dictamnus albus, Galanthus nivalis, Lonicera xylosteum, Scilla vindobonensis, Sorbus domestica, Veratrum nigrum, as well as Lunaria annua and Tilia tomentosa that are possibly introduced here. Based on the results of statistical analyses, the two forest communities are best identified with the associations named Corydali pumilae-Carpinetum and Fraxino orno-Quercetum cerridis, both occurring in the Transdanubian Mountain Range.
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Forests of the sand-hill region of the Danube–Tisza Interfluve (Convallario-Carpinetum Kevey 2008)
49–76Views:346The heavily fragmented and isolated pedunculate oak-hornbeam forests are remnants of the natural vegetation of the sand dune area of the Danube–Tisza Interfluve, where they are found mostly in interdunal depressions. To determine their main phytosociological characteristics, we collected and analyzed data from 25 stands. The results show that these forests are the most similar in species composition to the oak-hornbeam forests (Convallario-Carpinetum Kevey 2008) described from the Nyírség.
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White poplar riparian forests on the Csepel-sziget, Middle-Hungary (Senecioni sarracenici-Populetum albae Kevey in Borhidi & Kevey 1996)
57–78Views:396In this paper the white poplar riparian forests (Senecioni sarracenici-Populetum albae) growing on the Csepel-sziget and its vicinity are described and characterized based on 25 phytosociological relevés. These communities grow on loose fluvial sand and raw alluvial soils on the elevated parts of the lower river floodplain. They can readily be distinguished from willow gallery forests (Leucojo aestivi-Salicetum albae) which have no shrub layers and grow in habitats 1–1.5 m below the level of poplar forests on rather heavy and muddy soils. They differ also from the oak-ash-elm forests (Scillo vindobonensis-Ulmetum) growing in the upper floodplain. Certain – partly submontane – plants that are rare or completely absent in other parts of the Great Hungarian Plains may also occur in them, such as Anemone ranunculoides, Carex remota, Clematis recta, Crataegus × degenii, Crataegus nigra, Epipactis helleborine, Equisetum hyemale, Galanthus nivalis, Lathraea squamaria, Leucojum aestivum, Paris quadrifolia, Scilla vindobonensis, Vitis sylvestris. This association is classified in the sub-alliance Populenion nigro-albae Kevey 2008 in the syntaxonomical system.
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Distribution and conservation status of forest plant species in sand oak forests of the Danube–Tisza Interfluve
129–140Views:427In this article we summarise the floristic data collected during our research in oak forests in the northern part of ‘Kiskunság’ since 1998. Between 2020 and 2024, we systematically visited and mapped the forest stands in the region, which have been continuous since the First Military Survey (late 18th century). A total of 100 forest patches were identified as semi-natural pedunculate oak, covering a total of 865 hectares, and floristic data could be collected in 94 of them. The data were supplemented by scattered occurrences found during the survey. A total of 1207 occurrences of 96 forest and forest edge species were recorded in the stands. Of these, 214 occurrences of 81 species are new compared to the Hungarian Floristic Mapping data. Species were grouped according to habitat preference and regional vulnerability. In total, 23 species were classified as threatened and 37 as critically endangered. Without active conservation interventions, these species could become extinct in the ’Kiskunság’ within a few decades.