Pavol Mereďa

ORCID: 0000-0003-3702-7015
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Botany and Plant Ecology Studies
  • Plant Pathogens and Fungal Diseases
  • Biochemical and Structural Characterization
  • Yeasts and Rust Fungi Studies
  • Plant and Fungal Species Descriptions
  • Plant Taxonomy and Phylogenetics
  • Botanical Research and Chemistry
  • Botanical Studies and Applications
  • Flowering Plant Growth and Cultivation
  • Plant Pathogens and Resistance
  • Lichen and fungal ecology
  • Plant and animal studies
  • Genomics and Phylogenetic Studies
  • Medicinal plant effects and applications
  • Plant Diversity and Evolution
  • Mediterranean and Iberian flora and fauna
  • Medieval European History and Architecture
  • Historical Studies of British Isles
  • Chromosomal and Genetic Variations
  • Genetic diversity and population structure
  • Bryophyte Studies and Records
  • Ecology and Vegetation Dynamics Studies
  • Cynara cardunculus studies
  • Species Distribution and Climate Change
  • Linguistic and Cultural Studies

Czech Academy of Sciences, Institute of Botany
2011-2024

Slovak Academy of Sciences
2008-2023

Institute of Botany of the Slovak Academy of Sciences
2017-2023

Three alien Solidago species of North American origin have become naturalized in Europe. While S. canadensis and gigantea are considered among the most aggressive plant invaders, altissima is rarely found. Here, detailed karyological variation cytogeography central Europe genetic relationships cytotypes elucidated their native other invaded areas. Almost 4,800 plants from 800 sites across were studied using flow cytometry complementary chromosome counting. A representative subset was...

10.23855/preslia.2025.129 article EN Preslia 2025-01-01

Abstract The Balkan Peninsula, with many endemic species, is known as one of the most important speciation and diversification centres in Europe. Here, we present a study western populations polymorphic European V. suavis s.l., which have been reported under name adriatica, but their taxonomic status position within genus remained uncertain. Viola s.l. nine close relatives sampled across Europe were subjected to molecular (sequencing nuclear ribosomal internal transcribed spacers amplified...

10.1080/14772000.2011.603903 article EN Systematics and Biodiversity 2011-08-19

Monitoring the occurrence of new alien species among native flora is first prerequisite for preventing their later invasive spread.During last decade, we recorded data regarding 25 taxa to Slovakia including 21 casual and 4 locally naturalised species, with ornamental plants predominating significantly.The Cenchrus flaccidus, Cotoneaster zabelii, Doronicum pardalianches Panicum virgatum are able spread habitats thus represent greatest risk plant in Slovakia.

10.3391/bir.2023.12.1.01 article EN cc-by BioInvasions Records 2023-01-01

Background and Aims Violaspecies are commonly grown for their ornamental flowers, but evolutionary history taxonomy often complicated have been poorly explored so far. This is a study of the polymorphic, typically blue-flowered species Viola suavis, concentrating on white-flowered populations uncertain taxonomic assignment that occur in Spain central south-eastern Europe. The aim was to resolve origin status intraspecific structure (post)glacial this species.

10.1093/aob/mcn117 article EN Annals of Botany 2008-07-11

Violasuavisvar.pannonica (Violaceae) from central Europe is described here as a new variety to science. It most similar the blue-flowered V.suavisvar.suavis and white-flowered V.suavisvar.catalonica V.suavissubsp.naqshii, but exhibits differences in several characters, such petal colour, spur shape, fimbriae length on stipules, bracteoles position peduncle lamina sinus shape. Although taxon often considered colour mutation of V.suavisvar.suavis, previous genetic analyses revealed that these...

10.3897/phytokeys.242.121734 article EN cc-by PhytoKeys 2024-05-09

Fallopia sect. Reynoutria members (knotweeds) represent one of the most invasive alien plants in Europe. However, several aspects their biology, including cytological variation are poorly understood. Specifically, some taxa have multiple ploidy levels and frequency cytotypes seeds seedlings does not correspond to that recorded adult plants. In this study, flow cytometry was used determine relative genome size 1,106 established knotweeds (960 populations) collected Western Carpathians...

10.23855/preslia.2023.241 article EN Preslia 2023-01-01

A new knotweed hybrid originating from the crossing of Fallopia compacta and F. sachalinensis is described based on plant material collected in Moravia region Czech Republic as ×moravica. In addition to Republic, has also been reported previously United Kingdom New Zealand; however, it was not distinguished ×bohemica, a between japonica sachalinensis, since its one parent (F. compacta) generally treated only variety japonica. ×moravica differs morphologically most similar hexaploid (2n = 6x...

10.11646/phytotaxa.572.2.1 article EN Phytotaxa 2022-11-10

Abstract Aim New areas are often simultaneously invaded by closely related alien species; however, between‐species differences in the course of their invasive spreading due to diverse ecological preferences have rarely been investigated. Here, we aim study species‐specific spatio‐temporal invasion patterns Solidago canadensis and S. gigantea . Location Slovakia—the Western Carpathian adjacent Pannonian regions. Taxon Invasive gigantea. Methods Our was based on revised herbarium specimens, a...

10.1111/jbi.14785 article EN Journal of Biogeography 2023-12-29

Hybridization between native and alien congeners may pose a serious threat to biodiversity negatively affect flora. Here we study Solidago ×niederederi, which originated became established in Europe as result of cross the S. canadensis virgaurea. The recent increase number records ×niederederi has highlighted need monitor its occurrence, spread behaviour. In present study, tested effectiveness flow cytometry for detecting hybrid plants ×niederederi. Sequences ITS region nrDNA rpS15-ycf1...

10.23855/preslia.2022.183 article EN Preslia 2022-01-01

Solidago ×niederederi Khek (1905: 22) is a hybrid between North-American S. canadensis Linnaeus (1753: 878) and European native virgaurea 880). was introduced to Europe in the 17th century (Kowarik 2003). It has spread invasively throughout since second half of 19th (Weber 1998), reaching, besides sites disturbed by human activity, also (semi)natural biotopes, as forest edges, abandoned meadows field margins which are often inhabited virgaurea. Their discovered for first time nature local...

10.11646/phytotaxa.438.1.8 article EN Phytotaxa 2020-04-02
Coming Soon ...