Changes in the hardwood groves of the Martonvásár Manor Park (Hungary) in the last 30 years

The subject of the present study is the monitoring of the hardwood groves at the Martonvásár Manor Park with the involvement of 20 earlier (recorded in 1980–1981) and 20 current (recorded in 2011–2012) phytocoenological relevés. The manor park was created in the first half of the 19th century. Since then the woods along the St László stream have developed into species-rich and semi-natural forests, which can be identified as related to the oak-ash-elm groves (Scillo vindobonensis-Ulmetum) of the Zámoly Basin and the Csepel Island. The results of the current monitoring repeated 30 years after the first survey show momentous changes in forest dynamics such as the ageing-related opening of the upper canopy and an intense closure of the lower canopy and shrub layer. The ratio of the invasive species doubled. Present findings may provide additional information for long-term forest ecology research, however, results could be considered as changes of a semi-natural hardwood forest with minimal human impact

A Velencei-­hegység tatárjuharos tölgyesei (Aceri tatarici-Quercetum pubescentis-­roboris Zólyomi 1957)

A Velencei-hegység lösztakaróját borító nyílt tölgyeseknek minden korábbinál részletesebb fitoszociológiai vizsgálatát végeztük el a hegység különböző részén gyűjtött 20 felvétel alapján. A kutatás során vizsgáltuk a faji összetételt és sokféleséget, a fitoszociológiai karakterfajok eloszlását, a flóraelemek gyako - riságának eloszlását, valamint az állományok természetességének állapotát. Az elemzési eredmények szerint a vizsgált állományok fajösszetételük mellett a felvételenkénti átlagos fajszámnak, a lágyszárúak felvéte - lenkénti számának, és a karakterfajok gyakorisági eloszlásának tekintetében is nagymértékben hasonlóak a közeli Mezőföld tatárjuharos tölgyeseihez. Lényeges eltérést a velencei-hegységi állományok alacsonyabb tel - jes fajszámában, a gyom jellegű és adventív fajok alacsonyabb, valamint a szubmediterrán flóraelemek maga - sabb arányában tapasztaltunk. Megállapítottuk, hogy a Velencei-hegység nyílt tölgyesei tatárjuharos tölgyesek ( Aceri tatarici-Quercetum pubescentis-roboris ), amelyek a mezőföldieknél erősebb szubmediterrán jelleget hordoznak, állapotuk viszont azokénál jelentősen természetszerűbb

Tatárjuharos tölgyesek (Aceri tatarici­-Quercetum pubescentis-roboris Zólyomi 1957) a Mezőföldön

Dolgozatunkban húsz mezőföldi tölgyes erdőmaradványon elvégzett összehasonlító fitocö- nológiai elemzés eredményeit mutatjuk be. A vizsgált állományok számos sajátossága, így az erdő különböző fényviszonyokat eredményező belső struktúrája, a sztyepfajok (Festucion rupicolae) és a mezofil erdei ele - mek (Fagetalia) együttes előfordulása, valamint a szárazgyepekre (Festuco-Brometea), illetve a száraz tölgye - sekre (Quercetea pubescentis-petraeae) jellemző fajok tekintélyes aránya, nagymértékű egyezést mutatott a Magyarországról leírt sztyeperdők ( Aceri tatarici-Quercetum pubescentis-roboris ) megfelelő paramétereivel. Az európai és eurázsiai flóraelemek mellett az állományokban jelentős arányban vannak jelen szubmediterrán, pontuszi és kontinentális elemek is. Mindezek alapján megállapítottuk, hogy a vizsgált állományok az erdőssz - tyep szubmediterrán erdőtípusát képviselik

Drained ash swamp (Veratro albi-Fraxinetum angustifoliae), a new association in the Nyírség, NE Hungary

This paper presents the phytosociological description of a drained swamp community, Veratro albi-Fraxinetum angustifoliae, so far found only in the Nyírség at Nyírábrány “Kis-kőrises”, “Mogyorósi-erdő”; Vámospércs “Jónásrész-Kőrises”; and Vámospércs “Jónásrész-Buzita”. The habitat of the community is transitional between that of alder swamps (Fraxino pannonicae-Alnetum glutinosae), and hardwood riparian forests (Fraxino pannonicae-Ulmetum). The community is characterised by high proportions of character species of Alnion glutinosae and Molinion coerulei as well as Quercetea pubescentis-petraeae s. l. whereas character species of the order Fagetalia are almost completely absent. It hosts several rare, often threatened species, such as Angelica palustris, Ophioglossum vulgatum, Trollius europaeus and Veratrum album

Top-forests (Veratro nigri-Fraxinetum orni) of the Bakony Mountains

Present study describes a new community type recently found in the Hungarian Mountain Range (Bakony). The so-called top-forests (Veratro nigri-Fraxinetum orni) are found in dolomite mountains where the steep southern and northern slopes are connected by a relatively flat surface, and the parent rock is covered by rendzina soil. The southern slopes are occupied by thermophilous oak woodlands (Orno-Quercetum pubescentis), the northern slopes are covered by oak-hornbeam (Carici pilosae-Carpinetum) and beech woodlands (Daphno laureolae-Fagetum). Top-forests (Veratro nigri-Fraxinetum orni) are found on flat ridges, and substitute for Turkey oak-sessile oak (Quercetum petraeae-cerris) and slope woodlands (Mercuriali-Tilietum). The community is characterised by xerophilous canopy and shrub layers and a mesophilous herb layer. It is placed in the Orno-Cotinion coenological group

Block forest (roso pendulinae-tilietum cordarae), a new forest community of the carpathian basin (Cerová Vrachovina, Slovakia)

A new plant association (Roso pendulinea-Tilietum cordatae), similar to the Poo nemoralis Tilietutm cordatae Firbas et Sigmud 1928 (Central European siliceous block field forest), has been dexcribed. This forest commuity develops on the periglacial block fields of southern Slovakia (cerová Vrchovina, syn.: Nógrád-Gömör basalt region). The community has been separated from the Mercuriali-Tilietum Zólyomi et Jakucs 1958 common in the submontane belt of the Pannonicum using phytocoenological comparative analyses.The ecological demand and the species combination cleary distinguish this association from the older forest communities described earlier from northern periglacial block fields of Hungary

Steppe woodlands with Tatarian Maple (Aceri tatarici-Quercetum pubescentis-roboris) on the great Hungarian plain and its neighbourhood. An unfinished synthesis with supplementary notes

This paper presents the so far only partially published research material of the late Bálint Zólyomi on one of his major fields of interest, the forest steppe vegetation. The phytosociological tables presented here were found in his bequest indicating that he was going to publish a grand synthesis on this topic, which, however, has not come true. Since no written text accompanied the original tables, a historical overview and a short explanation to the tables are also provided

CHECKLIST OF THE HIGH ER SYNTAXA OF HUNGARY

Within the working plan of the IAVS the elaboration of a consense list of the higher syntaxa of Europe is running. During several decades different surveyes of the phytosociological units of Hungary were published by R. Soó (e.g. 1964, 1968, 1971, 1973). The last one appeared in the 6. Volume of the Synopsis Systematico-Geobotanica Florae Vegetationisque Hungariae (Akadémiai Kiadó, Budapest) in 1980. After this date a number of important syntaxonomic works have been published from the Central and South-East European countries, (Pott, 1992, 1995; Grabherr et al., 1993; Valachovich et al., 1995; Moravec et al. 1995; Coldea, 1998). Results of these works were applied and critically treated for the Hungarian vegetation units by Borhidi and Borhidi and Kevey in 1996. Recently the Red Data Book of the Plant Communities of Hungary is published in Hungarian language in two volumes (editor Borhidi A. and Sánta A.,1999) with the contribution of 12 authors. The following checklist represents the up to date concept of the Hungarian phytosociologists and vegetation ecologists about the higher syntaxonomic units of Hungary

The acidophilous forests of the Mecsek and their relationship with the Balkan-Pannonian acidophilous forests

During the last decade, three new acidophilous forests associations were detected in the Mecsek Mts (SW Hungary), and described as acidophilous beech wood (Sorbo torminalis-Fagetum (A. O. Horvát 1963) Borhidi et Kevey in Kevey 2001), acido-mesophilous oak wood (Luzulo forsteri-Quercetum petraeae (A. O. Horvát 1963) Borhidi et Kevey 1996) and acido-xerophilous oak shrubland (Genisto pilosae-Quercetum polycarpae (A. O. Horvát 1967) Borhidi et Kevey 1996). In this article two further new associations are described: the acidophilous oakwood of the Mecsek (Viscario-Quercetum polycarpae Kevey, ass. nova) and the acido-mesophilous oakwood of western Hungary (Campanulo rotundifoliae-Quercetum petraeae (Csapody 1964) Kevey, ass. nova). These associations are related to the acidophilous forests of the Balkan Peninsula based on the infrequent presence of sub-Mediterranean species. A detailed comparative study of these new associations with the earlier known ones permitted to develop a reshaped classification of the syntaxonomy of these units, creating four new suballiances: within the frame of Quercion farnetto I. Horvat 1938 the suballiances Luzulo forsteri-Quercenion polycarpae Kevey, suball. nova and the typical Quercenion farnetto Kevey, suball. nova, in the frame of Quercion petraeae Zólyomi et Jakucs 1957 the suballiances Luzulo multiflorae-Quercenion petraeae Kevey, suball. nova and the Quercenion petraeae Kevey, suball. nova