Robert Šuvada

Verified

Robert verified their affiliation via an institutional email.

Learn more

Verified

Robert verified their affiliation via an institutional email.

Learn more

• PhD
• Researcher at Slovak Academy of Sciences

The group of lesser dandelions (Taraxacum sect. Erythrosperma) is represented by more than 215 species growing in mostly xerothermic habitats throughout Europe. The only known species with sexual reproduction in this section is the diploid T. erythrospermum. It occurs in southern parts of Europe and reaches its northern limit in central Europe. In...

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...

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...

The NaturaSat software integrates various image processing techniques together with vegetation data, into one multipurpose tool that is designed for performing facilities for all requirements of habitat exploration, all in one place. The display satellite imagery module allows the user to load and show all optical channels of satellite images acqu...

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...

Xanthium spinosum is a noxious weed spreading from South America to almost all the whole world. In this study, we focused on ecological demands and coenotic affinity of X. spinosum in Slovakia. Analyses were performed on the basis of 20 own, unpublished as well as published phytosociological relevés and Borhidi’s ecological indication values. The r...

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...

Deciduous thermophilous oak forests (phytosociological class Quercetea pubescentis) are among the most species-rich and most endangered forest communities in central Europe. Thanks to the varied topography, bedrock, biogeographical influences and rather well-preserved semi-natural and near-natural forest vegetation, Slovakia harbours a diverse heri...

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...

Taraxacum danubium is xerothermic species of Taraxacum sect. Erythrosperma occurring in Central Europe with the highest frequency in southeastern Czechia, northeastern Austria and southwestern Slovakia. Since its description in 1970 from Devínska Kobyla Hills in Slovakia the species was documented from numerous localities across the country, howeve...

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 present a revised and unified classification system of Quercetea pubescentis class in Slovakia. To assess target vegetation units we used a large data set of relevés of the Slovak forest vegetation obtained from national phytosociological database of Slovakia and private databases stored in Turbowin. Starting dataset consisted of 15 714 relevés...

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,...

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...

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...

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...

The paper presents the first Red List of vascular plants of the Carpathian part of Slovakia created according to the actual Guidelines for Application of IUCN Red List Criteria using also the up to now unofficial categories and additional (qualifying) criteria. It contains 1,001 taxa of native plants, archaeophytes and some neophytes representing a...

The aim of this article is to present the results of the bryfloristic and ecological research carried out in selected areas of the Slovak Karst National Park in 2008. We detected 29 xerothermic bryophytes in total. Furthermore, the ecological characteristics evaluation of the recorded bryophyte species according to various factors is included, and...

Hordeum geniculatum is considered as an obligate halophyte, but exact data about ecological requirements of the species are lacking. Therefore, species response curves of H. geniculatum were obtained for soil reaction and nutrients using Borhidi’s indicator values and LOESS smoother response model in the programme CANOCO. Our data showed that H. ge...

The Pilosella alpicola group comprises four morphologically distinct and geographically vicariant alpine taxa. We performed a thorough herbarium revision and literature survey to infer their distributional pattern(s). Pilosella alpicola s.s. occurs in the Alps in two disjunct areas: the Swiss Valais Alps and the Italian Dolomites. Historical record...

The genus Taraxacum sect. Erythrosperma is represented by one diploid species and several triploid microspecies in the territory of Slovakia. In comparison with the sect. Ruderalia it is not widespread and its occurrence is limited to areas with xerophilous and thermophilous vegetation. Besides some morphological characters on leaves particular mic...

Six taxa of the genus Taraxacum sect. Erythrosperma were analyzed morphometrically using multivariate methods. A total of 391 specimens from Slovakia, Hungary, Czech Republic and Austria were studied. This study aimed to explore if leaf shape can be used to differentiate diploids and triploids, to verify if triploid microspecies deserve separate ta...

The paper provides information on the current occurrence of association Hordeetum hystricis Wendelbg. 1943 in Slovakia, where the community occurs at the northern border of its distribution range. The changes and vegetation state in the past and today are compared and discussed. The association is characterized by high cover of Hordeum geniculatum...

Revision of Historical and Current Distribution of Pholiurus Pannonicus (Host.) Trin. in Slovakia Historical and current occurrence of the obligate halophyte Pholiurus pannonicus was studied in Slovakia during the period 2003-2009. The species had been occurring in the Podunajská nížina Lowland and the Východoslovenská nížina Lowland; 30 localities...

The recent stage survey of twelve saline communities from classes Thero-Suaedetea Vicherek 1973, Crypsidetea aculeatae Vicherek 1973, Festuco-Puccinellietea Soó 1968 and Artemisio-Festucetalia pseudovinae Soó 1968 is given. Data were obtained during field research in 2003-2009. Our results showed, that associations of Acorelletum pannonici Soó (193...

Studies of pollen, seed set and experimental hybridizations were carried out to clarify breeding behavior and gene flow pathways in Taraxacum sect. Erythrosperma. Seeds from hybridization (106 samples), open pollinated (34) and bagged (43) capitula were analyzed for breeding system using a flow–cytometric seed screen. In the section Erythrosperma,...

Three taxa of Dactylorhiza incarnata group were found out in the Slovak Karst Mts and the Aggtelek Karst Mts during 2007– 2008. Dactylorhiza incarnata subsp. incarnata was found in the Aggtelek Karst Mts. in the surroundings of Jósvafö, Szógliget, Perkupa villages, as well as between the Tornanádaska and Komjáti villages. In the Slovak Karst Mts it...

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...

Three taxa of Dactylorhiza incarnata group were found out in the Slovak Karst Mts and the Aggtelek Karst Mts during 2007–2008. Dactylorhiza incarnata subsp. incarnata was found in the Aggtelek Karst Mts. in the surroundings of Jósvafö, Szógliget, Perkupa villages, as well as between the Tornanádaska and Komjáti villages. In the Slovak Karst Mts it...

Recent occurrence of critically endangered species Chenopodium chenopodioides (L.) AELLEN in Slovakia was studied. The study was performed in Pannonian phytogeographical region (the Podunajská nížina district) in 2006–2009. Only three localities were found: Tvrdošovce, Bajč and Iža. We also present data about a halophytic association Atriplici pros...

The Pholiuro pannonici-Plantaginetum tenuiflorae WENDELBERGER 1943 community is only known from the Pannonian region. The community has been reliably documented in Austria, Slovakia, Hungary, Serbia and Romania. Because this plant community is known only from a relatively small area, details about its synecology are inaccurate. To fill the relevant...

Community Puccinellietum limosae, characteristic by dominant occurrence of Puccinellia species, has developed on flat plots of alkali soils. Twelve localities with this community were documented by phytosociological relevés in Slovakia until 1970s. During field survey of Slovak saline habitats in 2003 - 2008 we found no typical vegetation of this a...

Dry Grasslands in the Slovenský Kras MTS (Slovakia) and the Aggteleki-karszt MTS (Hungary) — A Comparison of Two Classification Approaches The paper brings numerical classification of 48 new phytosociological relevés of dry grassland vegetation from the Slovenský kras Mts and the Aggteleki-karszt Mts located on the border between Slovakia and Hunga...

The article brings the results of the bryofloristic and ecological study in the National Park Slovak Karst. Altogether 91 species were recorded. Out of rare taxa Dicranum bonjeanii, Grimmia anodon, Pleurochaete squarrosa and Rhodobryum ontariense were found. The presence of twelve bryophyte taxa from Slovak Karst is probably reported here for the f...