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• Distribution and conservation status of forest plant species in sand oak forests of the Danube–Tisza Interfluve

  129–140

  Tamás Rédei

  Ágnes Árvai

  Sándor Barabás

  Melinda Kabai

  András Kun

  Barbara Lhotsky

  Attila Nándor Lukács

  András Mártonffy

  Anita Nagyné Harcsás

  Attila Rigó

  Kriszta Lilla Szabadi

  Virág Viszus

  Anikó Csecserits

  Views:

  426

  In 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.

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

  49–76

  Balázs Kevey

  Views:

  344

  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.

• Dry oak woods on the Szentendre Island

  147-178

  Balázs Kevey

  Éva Irén Bőhm

  Views:

  285

  The phytosociological characteristics of the oak woods on the Szentendre Island were first studied 70 years ago. We conducted a follow-up study to determine the phytosociological relationships of theses woods and assess their possible changes over time. We found that these woods are most similar in their phytosociological characteristics to the closed pedunculate oak forests occurring in the high floodplain in the Szigetköz area (Melico nutantis-Quercetum roboris) along the Danube. Our results also showed a marked increase in the proportion of natural weeds, introduced species and invasive aliens in the studied woods.

• Leucanthemella serotina in the Dráva Plain (Hungary)

  227-230

  Krisztián Kóczián

  János Csiky

  Views:

  483

  New stands of Leucanthemella serotina (L.) Tzvelev were found on the Hungarian side of the Dráva Plain. This legally protected species has not been found in the region for about 150 years. In the text, we report the maximum plant height, and thousand seed weight of the species as well as the species composition of its preferred habitats.