<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Nine hundred and eight-nine relevés from calcareous petrophytic steppes in Ukraine and its adjacent territories were assessed with the help of expert systems to determine the syntaxonomic affiliation of the plant communities at class and order levels. At least 488 relevés belonging to the class <italic>Festuco-Brometea</italic> were analyzed using the TWINSPAN algorithm, and 8 distinctive clusters were obtained, recognized as alliances of the order <italic>Stipo pulcherrimae-Festucetalia pallentis</italic>. A new alliance, <italic>Bromopsido cappadocicae-Asphodelinion tauricae</italic>, was ascribed to the Crimean Mountains and the presence of two alliances, <italic>Diantho lumnitzeri-Seslerion albicantis</italic> and <italic>Genisto tetragonae-Seselion peucedanifoliae,</italic> was confirmed as new for this vegetation in Ukraine. Unlike in the Pannonian Basin, <italic>Bromo pannonici-Festucion csikhegyensis</italic> alliance communities mentioned in the literature do not occur in Ukraine. <italic>Centaureo carbonatae-Koelerion talievii</italic> has been provisionally transferred from <italic>Festucetalia valesiacae</italic> to the order <italic>Stipo pulcherrimae-Festucetalia pallentis</italic>. Furthermore, we distinguished alliances by their geographic locations and their climatic (thermoregime, cryoregime, light in communities) and edaphic (carbonate content, salinity, and acidity) features.</p>
</abstract>

Nine hundred and eight-nine relevés from calcareous petrophytic steppes in Ukraine and its adjacent territories were assessed with the help of expert systems to determine the syntaxonomic affiliation of the plant communities at class and order levels. At least 488 relevés belonging to the class Festuco-Brometea were analyzed using the TWINSPAN algorithm, and 8 distinctive clusters were obtained, recognized as alliances of the order Stipo pulcherrimae-Festucetalia pallentis. A new alliance, Bromopsido cappadocicae-Asphodelinion tauricae, was ascribed to the Crimean Mountains and the presence of two alliances, Diantho lumnitzeri-Seslerion albicantis and Genisto tetragonae-Seselion peucedanifoliae, was confirmed as new for this vegetation in Ukraine. Unlike in the Pannonian Basin, Bromo pannonici-Festucion csikhegyensis alliance communities mentioned in the literature do not occur in Ukraine. Centaureo carbonatae-Koelerion talievii has been provisionally transferred from Festucetalia valesiacae to the order Stipo pulcherrimae-Festucetalia pallentis. Furthermore, we distinguished alliances by their geographic locations and their climatic (thermoregime, cryoregime, light in communities) and edaphic (carbonate content, salinity, and acidity) features.

<italic>Stipo pulcherrimae-Festucetalia pallentis</italic> Pop 1968 of calcareous petrophytic steppes in Ukraine

Vasyl’ Stus Donetsk National University

Hacquetia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

 Pop 1968 of calcareous petrophytic steppes in Ukraine

Nine hundred and eight-nine relevés from calcareous petrophytic steppes in Ukraine and its adjacent territories were assessed with the help of expert systems...

Stipo pulcherrimae-Festucetalia pallentis Pop 1968 of calcareous petrophytic steppes in Ukraine

Published Online: Jul 08, 2021

Page range: 303 - 325

Received: Aug 06, 2020

Accepted: Jan 04, 2021

DOI: https://doi.org/10.2478/hacq-2021-0004

Keywords
calcareous bedrocks, petrophytic steppes, syntaxonomy, Ukraine, vegetation classification

© 2021 Yakiv Didukh et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Stipo pulcherrimae-Festucetalia pallentis Pop 1968 of calcareous petrophytic steppes in Ukraine

Published Online: Jul 08, 2021

Page range: 303 - 325

Received: Aug 06, 2020

Accepted: Jan 04, 2021

DOI: https://doi.org/10.2478/hacq-2021-0004

Keywordscalcareous bedrocks, petrophytic steppes, syntaxonomy, Ukraine, vegetation classification

© 2021 Yakiv Didukh et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
calcareous bedrocks, petrophytic steppes, syntaxonomy, Ukraine, vegetation classification