Syntaxonomy of steppe depression vegetation of Ukraine

Vegetation Classification and Survey

article

Viktor Shapoval¹  Anna Kuzemko² 

[1] Falz-Fein Biosphere Reserve "Askania Nova";M.G. Kholodny Institute of Botany

关键词: Althaeion officinalis;    Bern Convention;    Didukh ecological scales;    EUNIS;    expert system;    grasslands;    Myosuro-Beckmannion eruciformis;    steppe depressions;    syntaxonomy;    wetlands;   

DOI  :  10.3897/VCS/2021/62825

来源: Pensoft

【 摘 要 】

Aims: To revise the syntaxonomy of the vegetation of steppe depressions (pody), in particular (1) to identify the associations and to reveal their environmental, structural and compositional peculiarities; (2) to assign the associations to higher syntaxa; and (3) to correct nomenclatural aspects according to the ICPN. Study area: Steppe zone of Ukraine, Left-Bank of the Lower Dnieper basin. Methods: 641 relevés were included in the final analysis in the PCOrd program integrated into Juice software. Two expert systems (EVC and EUNIS-ESy) were used to assign relevés to vegetation classes and to EUNIS units. Results: The analysis resulted in nine clusters, which were interpreted as Festuco-Brometea (two units), Molinio-Arrhenatheretea (three units), Isoёto-Nanojuncetea (three units) and one derivate community of the Festuco-Puccinellietea. Detailed characteristics of the species composition, structure, distribution, and environmental conditions are provided for each unit. According to the DCA ordination, the leading factors of the syntaxa differentiation are soil moisture and fluctuating water level. Conclusions: We could clarify the placement of steppe depression vegetation in the system of syntaxonomic units of Europe. The previously described syntaxa of the rank of alliance (Myosuro-Beckmannion eruciformis), suballiance (Galio ruthenici-Caricenion praecocis), and six associations are validated. Two associations and two subassociations are described as a new to science. Taxonomic references: Euro+Med PlantBase (https://www.emplantbase.org), except Mosyakin and Fedoronchuk (1999) for Phlomis scythica Klokov & Des.-Shost. and Tulipa scythica Klokov & Zoz. Syntaxonomic references: Mucina et al. (2016) for syntaxa from alliance to class level; Dubyna et al. (2019) for associations. Abbreviations: DCA = Detrended Correspondence Analysis; DES = Didukh Ecological Scales; EUNIS = European Nature Information System; EVC = EuroVegChecklist; GIVD = Global Index of Vegetation-Plot Databases; ICPN = International Code of Phytosociological Nomenclature.

【 授权许可】

Unknown