The distribution of mosses in habitat types depending from moisture in the vegetation communities of the Eastern Yakutia

Vegetation is one of the most dynamic components of the landscape, so the dependence of vegetation indicators on ecological and geographical indicators and factors is important and most studied in Natural Sciences. It is expected that climate change will have a big impact on the Northern ecosystems. The most important component of the vegetation of the cryolithozone, which is of fundamental importance for the ecological balance in mountain communities in close connection with the ecosystems of the Arctic, are mosses, and the main factor affecting the distribution of mosses by habitat types, and, accordingly, the behavior of mosses in cenoses, is the moisture regime.

The area under study is located at the junction of the Sette-Daban Ridge and the Suntar-Khayata Ridge to the Oymyakonsky plateau of the Verkhoyansky mountain system, in Eastern Yakutia. In order to identify the changes in the spectrum of plant communities, 5 sections of the profile were laid, four of which cover the vegetation of mountain areas and one – plain. During field work in the years 2015–2017, more than 110 of the main geobotanical descriptions of plant communities were made (Alpine tundra, swamps, forests, grasslands, etc.); more than 200 herbarium sheets of vascular plants, more than 1000 specimens of mosses, liverworts and lichens were collected. For bioplastics studies, more than 3 thousand specimens of mosses were collected, in particular at the adjacent territory. Floristic lists were compiled for the bryophytes of individual local floras, investigated with regard to their abundance, biomorf and the underlying rocks, macroand microrelief, permafrost landscapes, moisturizing and vertical zones to be entered in the computer database. In total, we analyzed 265 species of mosses, which are dominated by mesophytae (39,6 %), while xeromesophytes and mesohygrophytes (19 and 19.6 %) occupy the second and the third place; the fourth place is for hygrophytes (13 %), the share of xerophytes accounted for 6 %, and hydrophytes account for only 2.3 %. This number is typical for the bryoflora mountain systems of Eastern Siberia and is due to the climatic conditions of the region.

1. Yakutskaya ASSR. Atlas sel’skogo hozyajstva Yakutskoj ASSR / [redkol.: I.A. Matveev, i dr.]. M.: GUGK, 1989. 115 p.

2. Ivanov O.V., Kolesnikova M.A., Afonina O.M. et al. The database of the moss flora of Russia // Arctoa. 2017. V. 26, N 1. P. 1–10.

3. Ignatov M. S., Afonina O. M., Ignatova E.A. et al. Check-list of mosses of East Europe and North Asia. // Arctoa. 2006. N 15. P. 1–130.

4. Konspekt flory Yakutii. Sosudistye rasteniya / sost.

5. L.V. Kuznecova, V.I. Zaharova, Novosibirsk: Nauka, 2012. 272 p.

6. Abramova A.L., Savich-Lyubickaya L.I., Smirnova Z.N. Opredelitel’ listostebel’nyh mhov Arktiki SSSR. M.; L.: Izd-vo AN SSSR, 1961. 716 p.

7. Borisenko A.L. Brioflora Yugo-Vostoka Tomskoj oblasti: Avtoref. dis. … kand. biol. nauk. Tomsk, 2002. 23 p.

8. Ignatov M.S., Ignatova E.A. Flora mhov srednej chasti Evropejskoj Rossii: v 2 t. / Red. Ignatov M.S. V. 1: Sphagnaceae–Hedwigiaceae. M.: T-vo nauch. izdanij KMK, 2003. 608 p.

9. Ignatov M.S., Ignatova E.A. Flora mhov srednej chasti Evropejskoj Rossii: v 2 t. / Red. Ignatov M.S. V. 2: Fontinalaceae–Amblystegiaceae. M.: T-vo nauch. izdanij KMK, 2004. 352 p.

10. Mamatkulov U.K. Analiz brioflory Pamiro-Alaya. Dushanbe: Donish, 1989. 320 p.

11. Mamontov Yu.S. Flora mohovidnyh Omskoj oblasti: Avtoref. dis. … kand. biol. nauk. Tomsk, 2007. 18 p.

12. Savich-Lyubickaya L.I., Smirnova Z.N. Opredelitel’ listostebel’nyh mhov SSSR. Verhoplodnye mhi. L.: Nauka, 1970. 824 p.

13. Savich-Lyubickaya L.I., Smirnova Z.N. Opredelitel’ sfagnovyh mhov SSSR. L.: Nauka, 1968. 112 p.

14. Krasnaya kniga Respubliki Saha (Yakutiya). V. 1. Redkie i nahodyashchiesya pod ugrozoj ischeznoveniya vidy rastenij i gribov. M.: OOO «Reart», 2017. 411 p.

15. Ignatov M.S., Ignatova E.A., Fedosov V.E., Ivanov O.V., Ivanova E.I., Kolesnikova M.A., Polevova S.V., Spirina U.N., Voronkova T.V. Andreaeobryum macrosporum (Andreaeobryopsida) in Russia, with additional data on its morphology // Arctoa. 2016. V. 25, N 1. P. 1–51.

16. Sofronov R.R., Sofronova E.V. El’niki hrebta SetteDaban (bassejn r. Vostochnaya Handyga, Severo-Vostochnaya Yakutiya) // Nauka i obrazovanie. 2017. N 3. P. 111.

17. Ignatov M.S., Ignatova E.A., Ivanova E.I., Ivanov O.V., Bysyin N.A. On the distribution of Andreaeobryum in Russia // Arctoa. 2018. V. 27, N 2. P. 112–118.

18. Ignatova E.A., Ivanova E.I., Ignatov M.S. Moss flora of Sette-Daban Range (East Yakutia) // Arctoa. 2018. V. 27, N 2. P. 119–130.

19. Krasnaya kniga Rossijskoj Federacii (rasteniya i griby). M., 2008. P. 637–661.

20. Ivanova E.I., Ignatova E.A., Ignatov M.S. Moss flora of the Suntar-Khayata Reserve, Yakutia// Arctoa. 2016. V. 25, N 1. P. 131–140.

21. Ignatova E.A., Ivanova E.I., Ivanov O.I., Ignatov M.S. Mosses of the Muus-Khaya Mountain (Yakutia, Asiatic Russia) // Arctoa. 2011. V. 20, N 3. P. 211–226.

22. Nozhinkov A.E. Listostebel’nye mhi ravninnoj chasti Altajskogo kraya: Avtoref. dis. … kand. biol. nauk. Barnaul, 2004. 18 p.

23. Kuz’mina E.Yu. Flora listostebel’nyh mhov Koryakskogo nagor’ya: Avtoref. dis. … kand. biol. nauk. Sankt-Peterburg, 2003. 24 p.