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• Turkey oak forests on sand (Fraxino orno-Quercetum cerridis) in Vértesalja (Hunga-ry)

  34–57

  Balázs Kevey

  Norbert Riezing

  Views:

  167

  Here 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.

• Oak-hornbeam and turkey oak forests growing on sand on the foothills of the Pilis Range (Corydali pumilae-Carpinetum, Fraxino orno-Quercetum cerridis)

  79–105

  Balázs Kevey

  Éva Irén Bőhm

  Views:

  195

  We 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.

• Forests of the sand-hill region of the Danube–Tisza Interfluve (Convallario-Carpinetum Kevey 2008)

  49–76

  Balázs Kevey

  Views:

  229

  The 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.

• White poplar riparian forests on the Csepel-sziget, Middle-Hungary (Senecioni sarracenici-Populetum albae Kevey in Borhidi & Kevey 1996)

  57–78

  Balázs Kevey

  Views:

  231

  In 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.