No abstract

With this paper we continue a new annual series, the main purpose of which is to make significant floristic findings from Russia and neighboring countries more visible in Russia and abroad. In total, this paper presents new records for 38 vascular plant species from 7 Eurasian countries, obtained during field explorations, as well as during taxonomic revisions of herbarium materials. For the first time, new locality of Rochelia bungei is recorded for Europe and West Kazakhstan Region of Kazakhstan, Arnebia obovata for China and Kazakhstan, A. olgae for China, Ballota nigra for Kazakhstan and the Asian part of Russia, Potentilla chalchorum, P. tschimganica and P. doujonneana for Kyrgyzstan, Lappula heteracantha for Tajikistan, Hedysarum talassicum for Uzbekistan, Linaria grjunerae, Silene cserei for Siberia, Dianthus × courtoisii, Genista tinctoria, Verbascum phoeniceum for Eastern Siberia, Drosera × obovata, Pseudopodospermum strictum, Trollius austrosibiricus for the Altai Republic, Diarthron linifolium for the Republic of Buryatia, Dactylorhiza iberica, Epipactis condensata for the Republic of Daghestan, Platycladus orientalis for the Kabardino- Balkarian Republic, Diphasiastrum × zeilleri for the Republic of Mordovia, Typha latifolia for the Magadan Region, Senecio viscosus for the Novosibirsk Region, Solanum physalifolium for the Omsk Region, Echinops exaltatus for the Middle Volga, Lavandula angustifolia for the Samara Region, Galium affrenum for the Saratov Region, Bidens frondosa, Elatine triandra, Eleocharis klingei, Jacobaea grandidentata, Rhinanthus songaricus and Vicia megalotropis for the Tyumen Region, Bunias cochlearioides, Thalictrum ussuriense for the Inner Mongolia Autonomous Region of China, Isoëtes echinospora for the Yamal-Nenets Autonomous Area, Potentilla × bishkekensis for Issyk-Kul and Osh Regions of Kyrgyzstan.

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Typha shuttleworthii is the semi-aquatic plant in the modern areal which embraces mainly the ocean districts of Europe. The eastern border of the area of this species is located in Eastern Europe on the territory of Vyatka-Kama Cis-Urals (VKCU). Almost everywhere species is considered rare and is included in the Red Data Books in many European countries. However, on the territory of Russia, T. shuttleworthii is not protected. The rarity of this species makes it necessary to study its natural populations for their protection. In the paper, we present the materials on some biological and ecological features of the Typha shuttleworthii, growing on the territory of VyatkaKama Cis-Urals, where the species is represented by its extreme eastern populations. This species is offered to the protection on the territory of the European part of Russia within the Republic of Tatarstan and Udmurtia.

The ancient aeolian forms of relief, which are mainly covered with pineries and coniferous forests, are widely spread in the territory of Western Siberia. Anthropogenic transformation of these landscapes leads to the formation of technogenic deserts and sandy outcrops on soils of light mechanical structure generally because of the development of oil and gas extraction industry. Such transformed ecosystems are often met in the north of the West Siberian Plain within a subzone of northern taiga of the taiga natural zone and the zone of the forest-tundra. In 2016–2017, we explored three sites of sandy outcrops in the territory of Purovsky District of Yamalo-Nenets Autonomous Okrug (Tyumen region): in 27 km to the south from Muravlenko, in 32 km to the southwest from Gubkinsky and in 23 km to the East-southeast of New Urengoy. The first two sites are located within the northern taiga; the third site is at the southern border of the forest-tundra, in the area of its gradual transition to the northern taiga. Results of the conducted researches show the considerable changes in a number of physical and chemical properties of podsolic sandy soils of technogenic deserts in comparison with soils of undisturbed ecosystems. We have revealed statistically significant decrease in the acidity of the surface soil layer to 5–6 units рН due to the destruction of the top soil horizons and exposure of the illuvial and eluvial horizons having smaller acidity. Our researches show the reduction of maintenance of fine fractions – clay and dusty particles – in the transformed soils and, respectively, increase in content of sand up to 95–100%. Also we have revealed statistically significant reduction of soil moisture content in soils of sandy outcrops.  Thus, the soils of technogenic deserts are characterized by ease, flowability, they are usually not fixed by vegetation and easily are affected by wind. The ecotopes, which are formed on sandy outcrops, differ in extreme conditions. They can be mastered only by a small number of specialized species-erosiophiles, shifting to disturbed felted habitats with similar natural ecotopes with the friable sandy and sabulous sandy soils, often mobile soil typical of marine and lake shallows, river alluvium, taluses, slopes of ravines. On the periphery of sandy outcrops the shafts of falling up to 4,5–5,5 m high are formed. They constitute the real danger to natural undisturbed north taiga and forest-tundra ecosystems, burying them under sandy masses.