This work is intended to prepare a justification for the inclusion of Potamogeton praelongus in the third edition of the Red Book of the Omsk Region. The tasks include the analysis of the species distribution in the region, summarizing the original quantitative data about its tolerance to a number of aquatic factors in the West Siberian Plain, and clarification of its ecobiomorphological parameters. Over more than 60 years in the Omsk Region, the species was only reported in 5 lakes of the forest and forest-steppe zones, indicating that it is rare. We obtained the quantitative information about the condition of the species population only in 2023 in the lake Bugaly of the Bolsherechensky District. The population has an area of up to 0.28 km2. The species forms a monodominant community with a projective cover of up to 30%. The community is formed on grey and dark-grey thin-detritus silts in the depth range 1.2–3.0 m. According to hydrochemical tests, the water in lake Bugaly has рН = 6.9, total hardness 2.06 mg-eq/dm3, and total salt content 0.44 g/dm3. In the West Siberian Plain, P. praelongus was found in waters with рН between 6.3 to 7.6 with total hardness 0.26–6.40 mg-eq/dm3 and total salt content 0.03–1.10 g/dm3. The content of lead in the ecotopes of the species was 0.10–0.22 µg/dm3, nickel 0.76 µg/dm3, zinc 2.58–17.61 µg/dm3, cadmium 0.01–0.02 µg/dm3, chromium 0.43–0.44 µg/dm3, copper 0.84–5.97 µg/dm3, manganese 7.61–32.55 µg/dm3. The content of the soluble forms of iron was up to 1,585.0 µg/dm3, which suggests that the species is tolerant to iron. Based on the ecobiomorphological study performed, P. praelongus can be characterized as a perennial (vegetatively annual), polycarpous, long-shooted, stoloniferous, emergent-flowering, neutrophilic, typically freshwater, water hardness-indifferent, iron-tolerant, silt hydatophyte. Potamogeton praelongus might be recommended for inclusion in the coming issue of the regional Red Book with status 3(R) as a rare species.
cvetkovye gidromakrofity, ekologicheskaya tolerantnost', zhiznennaya forma, ohrana rasteniy, Zapadno-Sibirskaya ravnina
1. Voda. Metody opredeleniya schelochnosti i massovoy koncentracii karbonatov i gidrokarbonatov. // GOST R 52963-2008. Federal'noe agentstvo po tehnicheskomu regulirovaniyu i metrologii. M.: Standartinform, 2009. S. 362-392.
2. Golubev V.H. Ob izuchenii zhiznennyh form rasteniy // Botanicheskiy zhurnal. 1968. T. 53. № 8. S. 1085-1093.
3. Golubev V.H. Principy postroeniya i soderzhanie lineynoy sistemy zhiznennyh form pokrytosemennyh rasteniy // Byulleten' MOIP. Otdel biologicheskiy. 1972. T. 77. Vyp. 6. S. 72-80.
4. Dorofeev P.I. Iskopaemye Potamogeton (posobie dlya opredeleniya iskopaemyh plodov). L.: Nauka, 1986. 138 s.
5. Efremov A.N. Rdest dlinneyshiy Potamogeon praelongus Wulfen // Naturalist. 22.08.2022. https://www.gbif.org/ru/occurrence/4011647111
6. Efremov A.N., Evzhenko K.S. Konspekt vysshih vodnyh rasteniy Omskoy oblasti // Trudy Instituta biologii vnutrennih vod im. I.D. Papanina. 2021. Vyp. 93(96). S. 40–58.
7. Zhmylev P.Yu., Alekseev Yu.K., Karpuhina E.A., Balandin S.A. Biomorfologiya rasteniy: illyustrirovannyy slovar'. M.: Izd-vo MGU. 2002. 240 s.
8. Katanskaya V.M. Vysshaya vodnaya rastitel'nost' kontinental'nyh vodoemov SSSR. Metody izucheniya. L.: Nauka, 1981. 187 s.
9. Katanskaya V.M., Raspopov I.M. Metody izucheniya vysshey vodnoy rastitel'nosti // Rukovodstvo po metodam gidrobiologicheskogo analiza vod i donnyh otlozheniy. L.: Nauka, 1983. S. 129-218.
10. Kashina L.I. Semeystvo 24. Potamogetonaceae – Rdestovye // Flora Sibiri. T. 1. Novosibirsk: Nauka. Sibirskoe otdelenie, 1988. S. 93-105.
11. Kolichestvennyy himicheskiy analiz vod. Metodika vypolneniya izmereniy rN v vodah potenciometricheskim metodom. PND F 14.1:2:3:4.121-97. M.: Ministerstvo ohrany okruzhayuschey sredy i prirodnyh resursov Rossiyskoy Federacii, 2004. 14 s.
12. Kolichestvennyy himicheskiy analiz vod. PND F 14.1:2.253-09. M.: Lyumeks-marketing, 2013. 36 s.
13. Krasnaya kniga Omskoy oblasti. Omsk: Izd-vo OmGPU, 2005. 460 s.
14. Krasnaya kniga Omskoy oblasti. Omsk: Izd-vo OmGPU, 2015. 636 s.
15. Krylov A.G. Zhiznennye formy lesnyh fitocenozov. L.: Nauka, 1984. 184 s.
16. Lavrenko E.M. Ob urovnyah izucheniya organicheskogo mira v svyazi s poznaniem rastitel'nogo pokrova // Izvestiya AN SSSR. Seriya biologicheskaya. 1964. Vyp. 1. S. 32-46.
17. Lavrenko E.M. Ob urovnyah izucheniya organicheskogo mira v svyazi s poznaniem rastitel'nogo pokrova // Problemy sovremennoy botaniki. M.; L.: Izd-vo AN SSSR, 1965. T. 2. S. 364-378.
18. Lavrenko E.M., Sveshnikova V.M. O sinteticheskom izuchenii zhiznennyh form na primere stepnyh dernovinnyh zlakov. Predvaritel'noe soobschenie // Zhurnal obschey biologii. 1965. T. 26.3. S. 261-275.
19. Lavrenko E.M., Sveshnikova V.M. Ob osnovnyh napravleniyah izucheniya ekobiomorf v rastitel'nom pokrove // Osnovnye problemy sovremennoy geobotaniki. L.: Nauka, 1968. S. 10-15.
20. Lotova L.I. Botanika. Morfologiya i anatomiya vysshih rasteniy. M.: Lenard, 2017. 512 s.
21. Nikitin V.P. Paleokarpologiya i stratigrafiya paleogena i neogena Aziatskoy Rossii. Novosibirsk: Geo, 2006. 229 s.
22. Plantarium. Rasteniya i lishayniki Rossii i sopredel'nyh stran: otkrytyy onlayn atlas i opredelitel' rasteniy. 2007–2024. https://www.plantarium.ru
23. Rabotnov T.A. Ob ekologicheskoy nishe u rasteniy // Ekologiya. 1995. 3. S. 246-247.
24. Ramenskiy L.G. Vvedenie v kompleksnoe pochvenno-geobotanicheskoe issledovanie zemel'. M.: Sel'hozgiz, 1938. 620 s.
25. Ramenskiy L.G. Problemy i metody izucheniya rastitel'nogo pokrova. Izbrannye raboty. L.: Nauka, 1971. 334 c.
26. Sbornik metodik vypolneniya izmereniy. M.: Akvilon, 2012. 539 s.
27. Sviridenko B.F. Zhiznennye formy cvetkovyh gidrofitov Severnogo Kazahstana // Botanicheskiy zhurn. 1991. T. 76. № 5. S. 687-698.
28. Sviridenko B.F. Flora i rastitel'nost' vodoemov Severnogo Kazahstana. Omsk: Izd-vo OmGPU, 2000. 196 s.
29. Sviridenko B.F., Murashko Yu.A., Sviridenko T.V., Efremov A.N., Tokar' O.E. Soderzhanie tyazhelyh metallov v ekotopah gidromakrofitov Zapadno-Sibirskoy ravniny // Vestnik SurGU. 2017. Vyp. 4(18). S. 81-96.
30. Sviridenko B.F., Murashko Yu.A., Sviridenko T.V., Efremov A.N., Tokar' O.E. Soderzhanie zheleza v vode ekotopov gidromakrofitov Zapadno-Sibirskoy ravniny // Zaschita okruzhayuschey sredy v neftegazovom komplekse. 2018. № 1. S. 56-61.
31. Serebryakov I.G. Morfologiya vegetativnyh organov vysshih rasteniy. M.: Izd-vo Sovetskaya nauka, 1952. 390 s.
32. Serebryakov I.G. Osnovnye napravleniya evolyucii zhiznennyh form u pokrytosemennyh rasteniy // Byulleten' MOIP. Otdel biologicheskiy. 1955. T. 60. Vyp. 3. S. 71-91.
33. Fedorov A.A., Kirpichnikov M.E., Artyushenko Z.T. Atlas po opisatel'noy morfologii vysshih rasteniy. Stebel' i koren'. M.; L.: Izd-vo AN SSSR, 1962. 349 s.
34. Cvetnost' poverhnostnyh vod sushi. Metodika vypolneniya izmereniy fotometricheskim i vizual'nym metodami. RD 52.24.497-2005. https://clck.ru/3B4ccY
35. Cherepanov S.K. Sosudistye rasteniya Rossii i sopredel'nyh gosudarstv (v predelah byvshego SSSR). SPb.: Mir i sem'ya, 1995. 992 s.
36. Scharfetter R. Biographien von Pflanzensippen. Vien: Springer Verlag, 1953. 546 S.
