Zuzana Dítě

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• PhD.
• Researcher at Slovak Academy of Sciences

The classification was best interpreted at the level of 15 clusters. The vegetation changed along the salinity gradient from sub-halophytic grasslands (including Trifolion resupinati alliance of the Molinio-Arrhenatheretalia class and Beckmannion eruciformis and Festucion pseudovinae p. p. alliances of the Festuco-Puccinellietea class) and reed bed...

A remarkable population of Carex extensa (Cyperaceae) was found south of Lake Fert˝o (Neusiedler See) in Hungary in 2012. This species typically occurs in coastal salt marshes in Europe and was hitherto unknown from the Pannonian Basin. The locality is situated in a territory which has been embanked in 1911. Keeping also in mind that the vegetation...

Vegetation with the presence of Beckmannia eruciformis (L.) HOST (PoaceaePoeae) was studied using both published and authors' field data for the territory of the Pannonian Basin (Slovakia, Hungary and Romania). The analysis of the total of 95 phytosociological relevés enabled distinguishing seven different B. eruciformis vegetation types, belonging...

Inland saline habitats of the Pannonian Lowland exhibit a specific variety of grasslands determined by a soil salinity gradient. Changes in the hydrological regime and absence of management have resulted in heavy degradation of the vegetation. The impact of topsoil removal on salt steppes was tested by a 3-year small-scale manipulated experiment in...

We studied the vegetation development of the Pannonian salt steppes (class Festuco-Puccinellietea) for eight years on permanent plots in SW Slovakia. The saline grassland was ploughed up in 2002 to cultivate wheat and barley, and after two years it was left fallow. An open vegetation structure was typical for the initial stages, dominated by the ob...

Aim In salt-affected environments, salinity shapes ecosystem functions and species composition. Apart from salinity, however, we know little about how soil chemical factors affect plant species. We hypothesized that specific ions, most of which contribute to salinity, co-determine plant niche differentiation. We asked if the importance of ions diff...

The file of the electronic Expert system for the identification of habitats in Slovakia.

The habitat catalog of Slovakia presents a comprehensive overview of all habitats occurring in Slovakia, including their description, ecology, distribution and characteristic species composition. In addition, an electronic expert system was also created, which can assign the analyzed vegetation record to a specific habitat based on a similarity cal...

There is a long tradition in Europe of assigning ecological indicator values to plants and using these values in ecological research. A special case is that of the salt-tolerant species. Saline soils are extremely heterogeneous and their physical and chemical properties vary significantly with microrelief and between alternating dry/wet seasons. Th...

Monitoring the occurrence of new alien species among native flora is the first prerequisite for preventing their later invasive spread. During the last decade, we recorded data regarding 25 alien taxa new to Slovakia including 21 casual and 4 locally naturalised species, with ornamental plants predominating significantly. The locally naturalised sp...

Numerous features of the great diversity of saline environments in Romania (Southeastern Europe) have been investigated, although less explored regions still require field research. Tectonic movements and abundant fossil salt deposits have led to various isolated salt fountains, salty rocks and hypersaline ponds in the contact zone between the East...

Aims Ellenberg-type indicator values are expert-based rankings of plant species according to their ecological optima on main environmental gradients. Here we extend the indicator-value system proposed by Heinz Ellenberg and co-authors for Central Europe by incorporating other systems of Ellenberg-type indicator values (i.e., those using scales comp...

Temperate inland salt marshes, formerly used as meadows or pastures, are priority habitats in Europe and are threatened by intensifying anthropogenic activites. They are particularly important because of their biogeographical location on the North German Plain, which is the westernmost hotspot of continental halophytic vegetation in Eurasia. In spi...

Ranunculus polyphyllus is a Eurosiberian species of the Eurasian forest-steppe zone, extremely rare in the western part of its distribution range, in Central Europe. In Slovakia, this lowland semiaquatic plant has its westernmost border, where only a few historic locations are known, and which have not been confirmed since 1965: one on the Podunajs...

Ranunculus pedatus is a Eurasian species with a northern distribution edge in southern Slovakia. In the nineties of the 20 th century, it was assumed that the species probably occurs only near Štúrovo. Occurrence in the Hron and Ipeľ basins and several localities in the Podunajská nížina lowland between Komárno and Štúrovo was considered historical...

Halophytic vegetation on fossil salt deposits and salt springs is an extreme habitat occurring in isolated continental areas of temperate Europe. It has a relatively rich representation in the Transylvanian Basin of Romania; however, comprehensive research into this highly specialized vegetation is lacking. We provide the first phytosociological su...

As a result of water regulation in the past, periodically exposed natural habitats with vegetation of the class Isoëeto-Nanojuncetea in Slovakia and the surrounding Central European countries have recently become scattered. Many of its characteristic species have, however, found opportunities for living in secondary habitats such as water reservoir...

Little is known about the suite of ecological conditions under which characteristic species may continue to develop under the pressure of recent habitat deterioration. We aimed to determine the niche of three indicator species of the priority habitat Pannonic salt steppes and to find out how their vegetation composition, land use, and soil chemistr...

Several methods of tillage are among the practices most destructive to inland saline grasslands, and can result in their complete deterioration. Despite the high frequency of habitat destruction by these means, the recovery of the saline vegetation and regeneration abilities of halophytes are still not sufficiently known. The reaction of inland sal...

This paper presents the historical and recent distribution of Galatella cana in Slovakia. Revising herbarium specimens we have confirmed 7 localities of the species, five in Pannonian region (districts of Devínska Kobyla hills and Podunajská nížina lowland) and two of them the adjacent area of the Malé Karpaty Mts. Since the vast majority of sites...

After the Pannonian Sea has dried up, the Pannonian Basin has become a major depression in Central Europe. The continental climate and intensive groundwater evaporation from the upper layers of the soil caused the accumulation of salts and the formation of Solonchak and Solonetz soil. A mosaic of very specific halophytic vegetation has developed on...

There is a lack of a comprehensive study of eastern Adriatic salt marsh vegetation with special attention to plant–soil relationships that determine individual plant assemblages. We surveyed 41 sites of salt marshes on the Croatian coastline in order to classify their vegetation by numerical methods and to compare the resulting groups in terms of s...

We surveyed 17 locations of salt marshes along the Barents Sea coast in northern Norway (Finnmark, Nordkinnhalvøya and Varangerhalvøya), where 86 phytosociological relevés were recorded and analyzed. Two main vegetation groups were identified: Caricion glareosae and Puccinellion phryganodis, both alliances belonging to the class Juncetea maritimi,...

First two records of Eleusine indica in Slovakia are presented. This exotic grass species originating from the tropical Old World was found in the Podunajská nížina Lowland (Eupannonicum): in 2017 in Štúrovo and the next year in Bratislava, municipal part Karlova Ves. Both populations counted only three individuals grown in the pavement cracks. The...

During the exceptionally low water level of the Danube River in the 2018 vegetation season the third locality of Lindernia dubia was found in Slovakia. This alien species, native to North America, grew east of the Štúrovo town, in the confluence area of the rivers Danube and Hron. Its population counted ca. 50 plants which grew sporadically on the...

We studied historical and recent distribution of halophytic species Tripolium pannonicum subsp. pannonicum in Slovakia. In total, 60 localities were recorded, 49 sites are documented by herbarium vouchers and 11 sites were excerpted only from the literature and unpublished data. Historical data are shortly discussed and some traduced errors are exp...

The paper presents data on the distribution and habitat preferences of Polygonum arenarium subsp. arenarium in Slovakia. The study showed a rapid decrease in the number of localities in Slovakia in recent decades, due to destruction of sandy habitats. At present the taxon is considered to be very rare. We recorded it in stands of pioneer vegetation...

Between 2011 and 2016 we surveyed 42 sites of coastal salt marshes of Croatia. We confirmed the occurrence of several rare and endangered plant species. Ten of them are included in the Red List of Croatia; critically endangered (CR) Eleocharis uniglumis , Triglochin barrelieri and T. maritima , endangered (EN) Carex divisa and C. extensa , vulnerab...

Historical and current occurrence of perennial grass Melica altissima was studied in Slovakia during 2011–2017. The species occurrence was scarce in five phytogeographical districts studied (the Podunajská nížina, Ipeľsko-rimavská brázda region, Malé Karpaty Mts., Považský Inovec Mts., Spišská kotlina Basin); we recorded 11 native localities in tot...

North of the town Štúrovo near Diva settlement a rare halophyte, Triglochin maritima was found. It grows in stands of the association Puccinellietum limosae which occupies the lowest-lying shallow depressions. The site is intensively grazed by cattle, semi-ruderalized stands of the alliance Potentillion anserinae prevail. Although the area is known...

Questions: How do published syntaxonomical data of exposed salt lake plant communities from particular countries correspond with our field data sampled throughout the Pannonian Basin? How do the soils and the duration of flooding affect the pattern of individual vegetation types? Is there geographical variation in the vegetation of soda pans within...

Juncus castaneus and Juncus triglumis are umbrella species of moist calcareous tundra and arctic-alpine initial fens (the Caricion atrofusco-saxatilis alliance), being considered as relicts from the glacial times in Central-European mountains. Here we report their new recent records from the Western Carpathians, where they are extremelly rare, and...

Ludwigia palustris has always been a very rare species in Central Europe. In Slovakia, its occurrence remained unconfirmed for over 60 years and it was therefore considered extinct. The paper reports its rediscovery on two sites in SE Slovakia. Both localities were found in the Latorica River catchment area in 2015 when persistent summer droughts e...

Our contribution provides information on historical and recent occurrence of Scorzonera parviflora in Slovakia. The species was documented or published from 23 localities; most of them were found in the Podunajská nížina lowland, less frequently in the Záhorská nížina lowland. Isolated sites are situated in the Turčianska kotlina and Hornádska kotl...

Abstract: In Slovakia there are four documented historical sites of Cochlearia pyrenaica. The species was originally considered as Cochlearia tatrae, only in 2000 it was recognized as a new species for Slovakia and the Western Carpathians. Recently it is known only from two closer lying locations in the Veľká Fatra Mts. The remaining two sites were...

The article summarizes new information on the occurrence of 142 vascular plant taxa (including four hybrids) infrequent in the Veľká Fatra Mts. Among them 101 are autochthonous and 39 allochthonous to the flora of Slovakia, while origin of two taxa remains unclear. We recorded new sites of one endangered (EN: Utricularia minor) and three vulnerable...

Historical and current occurrence of halophytic species Carex divisa was studied in Slovakia during 2003–2014. It is known only in the Podunajská nížina Lowland, SW Slovakia, where 19 sites were found in total including historical and recent locations. Recently, the number of records decreased markedly and we confirmed only 9 localities. Due to the...

This contribution provides the first survey of vegetation with Puccinellia distans along the highways of northern Slovakia. Based on phytosociological relevés recorded on the route no. 18 on the section between Važec and Mengusovce settlements the vegetation corresponds with the association Puccinellio-Chenopodietum glauci of the alliance Coronopod...

This contribution presents the historical and recent occurrence of Galatella punctata (Waldst. et Kit.) Nees in Slovakia. We have confirmed 11 localities of the species, many of the historical occurrences were not found in the last decade, on the other hand, we have discovered new localities of the species. Galatella punctata grows on alluvial mead...

Occurrence of two rare Trifolium species was confirmed during research of saline pastures in the Východoslovenská nížina Lowland in 2014. We confirmed Trifolium angulatum and Trifolium retusum in the Kopčianske slanisko National Nature Reserve near Zemplínske Kopčany village (SE Slovakia); the stand containing both species was developed on area ca...

Inland saline habitats of the Pannonian Lowland are highly threatened by drainage and lack of regular management, especially on their northern distribution limit. We studied the impact of abandonment on the dynamics and survival of saline vegetation through a 4-year field experiment on permanent plots in SW Slovakia (the northern part of the Pannon...

Historical and current occurrence of obligate halophyte Plantago tenuifl ora was studied in Slovakia during 2001–2015. Th e species occurs in the Podunajská nížina and Východoslovenská nížina lowlands; 34 localities were documented including historical and current sites as well. Although the species was confi rmed in both above-mentioned lowland ar...

The paper is aimed to describe the occurrence and ecology of Bassia laniflora. The study showed that the species occurred in 57 localities at all in five Slovak phytogeographical districts (Ipeľsko-rimavská brázda region, Devínska Kobyla hills, Borská nížina lowland, Podunajská nížina lowland and Východoslovenská nížina lowland); only 14 sites have...

We studied historical and recent occurrence of halophilous dandelion Taraxacum bessarabicum (Hornem.) Hand.-Mazz. in Slovakia. Herbarium specimens from 16 public herbaria were revised and field research during 2010–2015 was carried out. In total, circa 60 localities were recorded, 29 sites are documented by herbarium vouchers and 31 sites were exce...

Two new and one historical site of Cyperus glomeratus were discovered in SW Slovakia along the left bank of the river Danube. After 60 years, this is the second record of the species in the country. We provide details about the historical and current distribution of C. glomeratus in Slovakia based on herbarium revision and field survey on the Slova...

We present new phytosociological and chorological data of five rare and endangered plant species of Slovakia: Chlorocyperus glomeratus, Dichostylis micheliana, Lindernia procumbens, Heleochloa alopecuroides and Scirpus radicans. All of them are characteristic species of periodical wetland habitats. We observed them in 2015, when optimal wheather ci...

In this paper we document a gradual loss of grassland habitats in Palárikovo cadastre (south-western Slovakia) from the half of the 19th century to the recent. During this period the area of grasslands decreased more than 90 % in the observed region. Based on the available data we also document a gradual deterioration of saline vegetation included...

A new site of the critically endangered species Peucedanum arenarium (Apiaceae) was found in the surroundings of the village of Modrany (the Podunajská nížina Lowland) in 2013. The species was growing in xerothermic, relatively species-rich vegetation of Festucion vale-siaceae alliance on loess. Phytosociological relevé includes 35 vascular plant s...

Schoenoplectus triqueter a critically endangered species of the Slovak flora was rediscovered after 25 years. We found the species on a hitherto unknown site on the left bank of the Danube River (Veľkolélske rameno river oxbow) near the settlement Veľký Lél. The species occurred separately in seven micropopulations along the river branch in narrow...

2016): Coastal newcomer on motorways: the invasion of Plantago coronopus in Hungary. – Studia bot. hung. 47(2): 319–334. Abstract: Our study presents Plantago coronopus, a new species of the Hungarian alien fl ora. We describe its taxonomical and morphological peculiarities, ecological and coenological background of its introduction and naturalisat...

Trichophorum alpinum is one of the rarest relic species of the Slovak flora. Up to now, its occurrence was documented on seven localities. Five of them from the Borská nížina lowland (Záhorie region), one from foothills of the Malá Fatra Mts and one from the Vysoké Tatry Mts. Since the 1990s the species has persisted only at one locality in the Vys...

Flea Sedge (Carex pulicaris) is a very rare species in Slovakia, recently confirmed only from six localities in the northern regions of Orava and Liptov. Its recent occurrence in the Borská nížina Lowland in the south-west of the country has not been confirmed with the last known populations possibly extinct. We provide data about a new locality of...

We present new locality of Carex bohemica in Slovakia. After revision of the material in 11 herbaria we found out that the species is recorded in a total of eight locations in W and SE Slovakia, exclusively on the Borská and Východoslovenská nížina Lowlands. Currently we confirmed only three of these locations. Two of them are situated on the Borsk...

The phytosociology and ecology of Scorzonera parviflora stands were studied in the Pannonian Basin and Western Balkans. In total, we used 60 relevés (46 collected for this study and 14 from the literature) for the ordination analysis. Optimal conditions for S. parviflora are species-poor coastal habitats in regions with hot summers and with high so...

In this article are presented data referring to the distribution and phytocoeno-logy of Suaeda pannonica in Serbia. Between the years 2009 and 2013 we confirmed this species on four localities from the total of about 10 its known sites. It was found on the banks and bottoms of salt lakes Medura, Slano Kopovo, Rusanda and Okanj in Bačka and Banat. W...

A new locality of critically endangered Trifolium strictum was found in saline grasslands near Jatov settlement in 2013 one year after their ploughing. The species has rarely grown in a species-rich ruderal stage of former halophytic vegetation of the Festucion pseudovinae alliance. Next year, T. strictum occupied larger areas in mesic stands withi...

The understanding of some plant communities can often be ambiguous if studies from multiple countries are considered, because goals and methods in each country may differ. The presented work is based on a detailed review of historic and recent literature about the association Heleochlo¨etum alopecuroidis in the Pannonian Basin and tangentially the...

The fifth volume of the edition of Plant communities of Slovakia summarizes the results of the syntaxonomical revision of dry grasslands (Festuco-Brometea), fringe communities (Trifolio- Geranietea), lowland and mountain hay meadows and pastures (Molinio-Arrhenatheretea, Nardo-Agrostion tenuis, Violion caninae), acidophilous heathlands (Calluno-Uli...

A new unexpected occurrence of the sedge Carex extensa Gooden., which is typical of littoral salt marshes, was found on the Hungarian side of Lake Fertő in May 2012. The locality lies near the Hungarian-Austrian border to the south of Lake Fertő in the vicinity of Fertőszéplak at an elevation of 112–113 meters above sea level. The population of C....

Historical and current occurrence of obligate halophyte Artemisia santonicum subsp. patens was studied in Slovakia during 2001–2012. The species has been occurred in the Podunajská nížina Lowland and the Východoslovenská nížina Lowland; 35 localities were found in total. The data from the Záhorská nížina Lowland is erroneous. Recently the number of...

Juncus subnodulosus belongs to very rare taxa of the Slovak flora. Most of its historical locations were situated in the Podunajská nížina Lowland, but most of them were destroyed and the recent occurrence has been not confirmed. In this paper we publish two new locations of Juncus subnodulosus in the Podunajská nížina Lowland. The first location w...

A new locality of Herniaria incana Lam. (Caryophyllaceae), critically endangered species for Slovakia, was recorded east of the town Komárno. The plant is growing sporadically in the Nature Reserve “Pod Starým vrchom” near the village Šrobárová on abandoned loess plateau in the degraded vegetation of the Festucion valesiacae Klika 1931 alliance. Up...

Occurrence of Carex divisa is very rare in Slovakia, it is known only from the warmest areas of the Podunajská nížina Lowland, where is the northern limit of its distribution range. The species was historically documented in three associations of the Juncion gerardii alliance: Scorzonero parviflorae-Juncetum gerardii, Agrostio-Caricetum distantis a...

During the investigation of the halophytic vegetation in Vojvodina (northern Serbia) in 2012 the occurrence of Cyperus pannonicus Jacq. was confirmed. The species create stands of association Cyperetum pannonici Wendelberger on the shore of a small saline lake called Medura, east of the village Riđica. The population is a relatively large.

Dry grassland habitats are currently the most rare in the Danube basin, since the vast majority of which were previously converted to cropland and vineyards. Relatively preserved dry vegetation we discovered in the village of Modrany. Studied area represents a significant comb located northwest of the village Modrany and bounded by dimension 203.7...

The site Čistiny, near the village of Kamenný Most, known as an important remnant of halophytic vegetation, was declared a nature reserve in 2001. This study includes a checklist of the vascular plants found in the locality in 2012, with their Red List status, and includes the comparison with the older floristical surveys of the site. The results p...

The historical and recent distribution, ecology and phytosociology of perennial grass Beckmannia eruciformis was studied in Slovakia between 2002 and 2010. Altogether 22 natural and two secondary sites with presence of the species were found from published sources, herbaria and field research. Localities of its native occurrence have been concentra...

1. Biotopy slaných pôd Po zničení väčšiny slanísk sa zvyšky slanomilnej vegetácie uchýlili napr. do poľných depresií. Stali sa tak miestom posledných útočísk viacerých kriticky ohrozených druhov rastlín. Foto: D. Dítě Opis adefinícia biotopu/biotopov Slaniská sú nápadným prírodným fenoménom sosobitým vegetačným krytom. Ten je tvorený prevaž-ne vyso...

In wet years, field depressions are flooded, which provides refugia for many wetland plant species in shallow pools in intensively managed arable fields. During our field research of these habitats in the Podunajská nížina Lowland (SW Slovakia) in 2010, we found six critically endangered (Chenopodium chenopodioides, Heleochloa alopecuroides, H. sch...

Association Artemisio santonici-Festucetum pseudovinae SOÓ. in MáTHÉ 1933 corr. BORHIDI 1996 is considered as one of the most abundant plant communities of saline habitats in the Pannonian Plain. The paper presents information about its current distribution in Slovakia. The obtained results were compared with historical data. Vegetation changes and...