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THAISZIA – JOURNAL OF BOTANY, Volume 34, 2024 – abstracts

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THAISZIA – JOURNAL OF BOTANY, Volume 34, 2024 – abstracts
vol. 34/1

Bernátová D., Paštová L., Kliment J. & Krahulec F. (2024): Papaver dubium in relic habitats in the Veľká Fatra Mountains. – Thaiszia – J. Bot. 34: 001–010. –

Abstract: The occurrence of Papaver dubium L. under overhangs in the Veľká Fatra Mts., Slovakia, is evaluated with respect to its morphology, chromosome number and habitat conditions. We consider its occurrence under overhangs in high altitudes as a relic from the end of Last Glacial or early Holocene.
Keywords: relic occurrence, overhangs, chromosome number, Papaver dubium, morphology.
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Churkova K. & Churkova B. (2024): Impact of fertilizing on biodiversity in pasture ecosystems. – Thaiszia – J. Bot. 34: 011–024. –

Abstract: Biodiversity in grazing systems determines production efficiency, system stability and resilience, and nutrient retention. In this relation during the period 2016-2018, a scientific research experiment was conducted on a natural grass stand of the Nardus stricta L. type at an altitude of 1400 m in the area of Chuchul (Bulgaria) of the following rates of fertilization: 1. Untreated (Control); 2. Annual fertilizing with N60P60; 3. First-year fertilizing with N60, and second and third with P60; 4. First-year fertilizing with P60, and second and third with N60; 5. First and second year fertilizing with N60, and third with P60; 6. First and second year fertilizing with P60, and third with N60; 7. First year fertilizing with N60, second year with P60, third year with N60; 8. First-year fertilizing with P60, second year with N60, third year with P60. The aim of the article is to analyze the impact of fertilizing with mineral fertilizers on the biodiversity of a pasture ecosystem and to propose an appropriate way of fertilizing to improve the species diversity of useful components in the grass stand. Biodiversity was determined by the indicator botanical composition of the grass stand, and the species diversity of the components in the grass stand by botanical groups was observed under eight variants of variable mineral fertilizing. It was found that the fertilization increased share of perennial grasses and motley grasses. The species Nardus stricta L., defining the type of pasture, was replaced from the more useful types of grasses, such as: Nardus stricta L., Agrostis capillaris L., Phleum alpinum L., Festuca ovina L., Festuca rubra L., Agrostis alba L., Chrysopogon gryllus L., Dactylis glomerata L., Lolium multiflorum L. The fertilizing effect is most significant in the third year, when both the representatives of grasses and legumes were significantly increased.
Keywords: pasture ecosystems, fertilizing, biodiversity, botanical composition.
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Iemelianova S. M. & Borsukevych L. M. (2024): Habitat preferences and phytocoenotic range of Reynoutria japonica Houtt. in Ukraine. – Thaiszia – J. Bot. 34: 025-054. –

Abstract: Based on vegetation plots extracted from phytosociological databases and literature sources, the current distribution of Reynoutria japonica in Ukraine was assessed in terms of habitat preferences and phytocoenotic affiliation. It has been found that R. japonica in Ukraine is spread across four habitat types: anthropogenic areas, floodplain forests, shrublands, and gravel bars. The most frequent occurrences of the studied species were found in anthropogenic habitats covered by mesophilous nitrophilous tall herbs. Within the floodplain habitats, R. japonica was most frequently found in temperate riparian willow-poplar forests and temperate riparian hardwood forests. R. japonica is much less frequently related to shrub habitats and gravel bars. It occurs with different covers, reaching its maximum values on anthropogenic sites. The analysis of the phytocoenotic range of species showed that it is a component of the vegetation belonging to the classes Epilobietea angustifolii, Salicetea purpurea, Alno glutinosae-Populetea albae, and Thlaspietea rotundifolii. The analysis of habitat types and plant communities with the participation of R. japonica in Ukraine showed that the species occurs in ecological environments closely related to those that are characteristic of the species in its native range – mesophylous soils, rich in nutrients, which is a favorable factor in the process of species accelerated adaptation to new territories.
Keywords: invasion, floodplain forest, man-made habitats, expert system, syntaxonomy, Ukraine.
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Eliáš P. Jr. & Kšiňan S. (2024): When the specialization is a curse: distribution of Lolium remotum Schrank in Slovakia. – Thaiszia – J. Bot. 34: 055–065. –

Abstract: Distribution of Lolium remotum in Slovakia, a typical linicolous weed, is presented in this paper. The species was recorded in 30 quadrants of the Central European mapping grid; the most of localities were found in the Carpathians which is related to the areas of flax cultivation for the linen industry. While in the 19th century it was relatively common in flax fields, after the First World War it began to decline (flax sown areas decreased by three quarters in former Czechoslovakia during the world economic crisis of 1929-1933). In the second half of 20th century, the synergistic effect of several agrotechnical measures (precise cleaning of the seed, simplification of crop rotation, deep autumn plowing and application of herbicides) manifested; only single locality was documented. At present, it belongs to the extinct species of Slovak flora (RE), it has not been detected for over 60 years.
Keywords: central Europe, flax specialists, flax weeds, occurrence, rare species.
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Dudáš M. (ed.), Eliáš P. Jr., Király G., Kobiv Y., Majerová M., Májeková J., Mikoláš V., Pliszko A., Schmotzer A. & Takács A. (2024): New floristic records from Central Europe 13 (reports 176-197). – Thaiszia – J. Bot. 34: 066-089. –

Abstract: The presented 13 th part of the series includes 22 new records of vascular plants from the territory of Central Europe. In Hungary, 5 species, Clerodendrum trichotomum, Morus indica, Oenanthe banatica, Rumex confertus and Torilis nodosa are mentioned. Single findings of alien Panicum virgatum in Poland as well as Euphorbia lathyris in Romania were recorded. In Slovakia, twelve species, Agrostemma githago, Carex hordeistichos, Camelina sativa subsp. zingeri, Consolida hispanica, Geranium lucidum, Lobularia maritima, Ranunculus pedatus, Reseda phyteuma, Rubus radula, Sagittaria latifolia, Sedum pallidum and Trifolium strictum were recorded. From the Ukrainian Carpathians 3 new records of Euphrasia minima subsp. tatrae, Neotinea ustulata and Salix herbacea were reported.
Keywords: alien, the Carpathians, chorology, Hungary, native species, new findings, Poland, red list species, Romania, Slovakia, vascular plants.
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