Rare xerophytic steppe plant communities and biotopes in the Krasna river valley (Lugansk region)

Didukh, Yа.P.; Chusova, Olga

doi:10.15407/ukrbotj71.03.275

Cited by 6 publications

(4 citation statements)

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“…It is on the southern edge of its area here and is found only in a few exclaves. The coenotic range of the communities is quite narrow (Golitsyin 1958, Didukh & Chusova 2014. This association combines communities that are typical for the Upper Oskol Region on slightly sodded chalky slopes with dominance of calciphilous shrubs and subshrubs.…”

Section: Euphorbio Cretophilae-jurinetum Brachycephalaementioning

confidence: 97%

“…K. Koch. Steppe species (Carex humilis, Stipa capillata L.) are also part of the floristic composition (Didukh & Chusova 2014). However, there are no such typical carbonatophiles as Hyssopus cretaceus, Scrophularia cretacea and Matthiola fragrans, and occurrence of Artemisia hololeuca and A. salsoloides is limited.…”

Section: Euphorbio Cretophilae-jurinetum Brachycephalaementioning

confidence: 99%

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Syntaxonomy of chalk outcrop vegetation of the order Thymo cretacei-Hyssopetalia cretacei

2018

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The order Thymo cretacei-Hyssopetalia cretacei Didukh 1989 combines chalk outcrop plant communities of the southwestern Central Russian Upland. Its specificity can be attributed to a rather peculiar and heterogeneous flora with a large number of endemic species. The question about its origin has caused a lively discussion, which has been going on since the late nineteenth century. Since 1989 works on the classification of these communities have frequently been carried out, but until today no unanimous decision could be reached. The purpose of our research was to conduct a critical analysis of the syntaxonomical structure of Cretaceous outcrop vegetation and to show its difference from the steppe vegetation of the class Festuco-Brometea Br.-Bl. et Tx. ex Soó 1947. The territory of our research covers the southwestern foothills of the Central Russian Upland and the Donetsk Range, located only within the steppe zone and characterised by Cenomanian chalk outcrops. In total 354 relevés were used for the analysis. The modified TWINSPAN classification was used for the analysis. Our research has shown that the order Thymo cretacei-Hyssopetalia cretacei includes twelve associations belonging to three alliances: Artemisio hololeucae-Hyssopion cretacei Romashchenko et al. 1996, Euphorbio cretophilae-Thymion cretacei Didukh 1989 and Centaureo carbonatae-Koelerion talievii Romashchenko et al. 1996.

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Section: Euphorbio Cretophilae-jurinetum Brachycephalaementioning

confidence: 97%

Section: Euphorbio Cretophilae-jurinetum Brachycephalaementioning

confidence: 99%

Syntaxonomy of chalk outcrop vegetation of the order Thymo cretacei-Hyssopetalia cretacei

2018

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“…В Україні інформацію щодо питання еколого-топологічної диференціації рослинного покриву висвітлено у попередніх наших працях (Didukh 1995, Didukh & Kontar 1999, Didukh & Pavlyuk 2008, Didukh & Rozenblit 2017, Rozenblit 2020a.…”

Section: вступunclassified

Методологія Досліджень Топологічної Диференціації Рослинного Покриву (На Прикладі Дністровського Каньйону)

Розенбліт,

Дідух

2023

CBJ

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Question: What research methods should be used to assess the topological differentiation of habitats (on the example of the Dniester canyon)? Locations: Dnister canyon, Ukraine. Methods: critical analysis of the literature sources and electronic resources. Nomenclature: Euro+Med Plantbase (https://www.europlusmed.org/), Mucina et al. 2016, Dubyna et al. 2021. Results:We outlined methodology (approaches, methods) for the ecological and topological differentiation of vegetation (habitates) evaluation and illustrated its use on the example of the Dniester canyon. We conducted critical analysis of the relevant terms and proposed a schematic structure of their relationships. The basic concept of the topological structure is the ecomere, which is represented by macrocombinations of habitats at the altitudinal-regional level, by mesocombinations at the catena-landscape level, and by microcombinations at the facies-local level. The Dniester Canyon is considered as a model of ecological and topological differentiation of the river valley catena which includes mesocombinations of slopes and floodplains. The main unit of the mesocombination is the links characterized by the proper phytocenoses (habitates). According to the influence of external factors series are distinguished, and geoseries are distinguished according to the changes in cenotic structure. Based on comparative analysis of ecological and coenotic profiles of various series and geoseries we identified 16 sigma syntaxa. Their nomination is given by the typical syntaxon. For example, specific petrophyte-grass (Poetosigmetum versicoloris) and shrub-forest (Corno-Quercosigmetum) ecomers are illustrated. Conclusions: Based on synphytoindicative assessment and modern mathematical methods (the main components of PCA-ordination and the "thermal" matrices of correlation dependence construction) we established the nature of interdependencies between changes in ecological indicator values and their influence on the plant communities (habitats) differentiation. The obtained results of the topological differentiation assessment and the quantitative (score) indicators are important for further monitoring, comparative analysis and forecasting of possible changes in the vegetation cover.

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“…Домінантними видами вважали види із проективним покриттям понад 30% у травостої. Для визначення отриманих синтаксонів було зроблено порівняння з опублікованими синтаксонами (Korotchenko, Didukh, 1997;Krasova, Smetana, 1999;Didukh, Korotchenko, 2003;Korotchenko et al, 2009a, b;Kutyna et al, 2011;Didukh, Vashenyak, 2012;Didukh, Chusova, 2014;Vynokurov, 2014а, b, 2016.…”

Section: матеріали та методиunclassified

Untitled

2019

Ukr. Bot. J.

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Following our recent lectotypification (with a specimen from G-DC) of the name Senecio praealtus Bertol. var. borysthenicus DC. validated by de Candolle based on Andrzejowski's and Besser's specimens from Ukraine, we provide here information on additional original specimens of that taxon (KW: Besser and Turczaninow historical collections), which is now recognized as Jacobaea borysthenica (DC.) B.Nord. & Greuter and which was until recently widely accepted as Senecio borysthenicus (DC.) Andrz. ex Czern. (Asteraceae). In particular, there are two isolectotypes in KW collected by Andrzejowski near Kyslyakivka (now Lymany, Mykolayiv Region, Ukraine), as well as some other specimens collected near Zaporizhzhya (Andrzejowski) and in southern Podolia (Besser and/or Andrzejowski). Some related Eastern European taxa of the taxonomically complicated Jacobaea vulgaris Gaertn. (= Senecio jacobaea L.) aggregate and misapplied names are discussed as well. The identity of the name Senecio divaricatus Andrz. (nom. illeg., non L.) is clarified; it is a synonym of Jacobaea borysthenica. It is also confirmed that Senecio podolianus Panigrahi is an illegitimate replacement name for S. borysthenicus. Jacobaea borysthenica seems to be closely related to J. andrzejowskyi (Tzvelev) B.Nord. & Greuter and J. vulgaris subsp. pannonica Hodálová & Mered'a; the two latter taxa morphologically differ from J. borysthenica but are very similar to each other and may be even conspecific. Further studies are needed for clarifying the complex evolutionary and biogeographical patterns within the J. vulgaris aggregate in Eastern Europe and adjacent areas.

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Rare xerophytic steppe plant communities and biotopes in the Krasna river valley (Lugansk region)

Cited by 6 publications

References 1 publication

Syntaxonomy of chalk outcrop vegetation of the order Thymo cretacei-Hyssopetalia cretacei

Syntaxonomy of chalk outcrop vegetation of the order Thymo cretacei-Hyssopetalia cretacei

Методологія Досліджень Топологічної Диференціації Рослинного Покриву (На Прикладі Дністровського Каньйону)

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