Phytocoenotic map to evaluate plant diversity in eastern Crimea

N. Ermakov, Yu.V. Plugatar, V.V. Korzhenevskiy, E. Ermakova
The large-scale vegetation map of steppe biome in Kazantip Nature Reserve (eastern Crimea) was developed for the assessment of ecological peculiarities of biotopes, phytocoenology and various parameters of resource-relevant plants, endangered plant species and communities. The basis for the study was 340 relevés of steppe communities. The classification of plant communities was carried out using the Braun-Blanquet approach. The plot records were classified by TWINSPAN. Syntaxa ecology was studied with DCA ordination. The spatial structure of steppe vegetation was studied using satellite image WorldView-2 (resolution 1.8 m). The total diversity of steppe biome plant communities was assigned to 8 classes 10 orders, 10 alliances and 18 informal units - communities. Results of DCA ordination and correlation analysis demonstrated an arrangement of vegetation associations along leading ecological factors. Axis 1 was interpreted as complex gradient of two factors - soil salinity and soil moisture regime. Axis 2 of the DCA was explained in terms of substrate type (petrophytic factor). Three ecological sets of syntaxa observed along leading axes were used as basic spatial categories for the map legend construction. Application of satellite images of high resolution (1.8 m) allowed developing the large-scale vegetation map representing the spatial vegetation structure of halophytic-steppe vegetation mosaic from certain plant communities to micro- and meso-combinations of vegetation types. The map was used for evaluation of ecology and distribution of Red Data Book plant species and plant communities and for monitoring.
Ermakov, N., Plugatar, Yu.V., Korzhenevskiy, V.V. and Ermakova, E. (2021). Phytocoenotic map to evaluate plant diversity in eastern Crimea. Acta Hortic. 1324, 225-232
DOI: 10.17660/ActaHortic.2021.1324.35
biodiversity, geobotanical mapping, plant ecology, vegetation conservation, steppe biome, biotop, Crimea

Acta Horticulturae