Abstract
Scanning electron microscopy identified 47 stomatocyst morphotypes in the spring phytoplankton of the Angara River and its tributaries (Irkut, Kuda, Kitoy, Belaya, and Ida Rivers), with 5 morphotypes new for science. Most of the morphotypes are widespread. Among them, 28 have been previously recorded in Russian reservoirs, and 22 are characteristic of Lake Baikal, from which the Angara River originates.
References
- Bai, X., Piątek, J., Wołowski, K., Bu, Z. & Chen, X. (2020) New stomatocysts discovered in Sphagnum peatlands, central China. Phytotaxa 477 (2): 151–170. https://doi.org/10.11646/phytotaxa.477.2.2
- Baumann, E., de Jong, R. & Kamenik, C. (2010) A description of sedimentary chrysophyte stomatocysts from high-Alpine Lake Silvaplana (Switzerland). Nova Hedwigia 136: 71–86. https://doi.org/10.1127/1438-9134/2010/0136-0071
- Bazhenova, O.P., Mitrofanova, E.Yu. & Shakhoval, V.E. (2012) Stomatocysts of chrysophyte algae from bodies of water in territory near Irtysh River in Omsk Region and Lake Teletskoe in Gorny Altai, Russia. Contemporary Problem of Ecology 5: 423–429. https://doi.org/10.1134/S1995425512040026
- Bazhenova, O.P. (2021) Atlas of Stomatocysts of Chrysophyte Algae from Plankton of Water Bodies of the Omsk Irtysh Region. Omskblankizdat, Omsk, 124 pp. [in Russian]
- Bessudova, A., Likhoshway, Y., Firsova, A., Mitrofanova, E., Koveshnikov, M., Soromotin, A., Khoroshavin, V. & Kirillov, V. (2023) Small organisms in a large river: what provides the high diversity of scaled chrysophytes in the Ob River? Water 15 (17): 1–29. https://doi.org/10.3390/w15173054
- Bessudova, A.Y., Firsova, A.D. & Likhoshway, Y.V. (2024) Redescription of Chrysosphaerella baikalensis (Chrysophyceae, Chromulinales) with new data on the ultrastructure of its stomatocysts. Phytotaxa 669 (1): 67–74. https://doi.org/10.11646/phytotaxa.669.1.7
- Bessudova, A.Y., Firsova, A.D., Galachyants, Y., Mikhailov, I., Petrova, D., Nalimova, M. & Likhoshway, Y.V. (2025) The influence of tributaries on the diversity of scaled chrysophytes of the Angara River. Acta Biologica Sibirica. [In press]
- Bourrelly, P. (1957) Recherches sur les Chrysophycées. Revue Algologique, Mémoire Hors Série 1: 1–412.
- Carney, H.J. & Sandgren, S.D. (1983) Chrysophycean cysts: indicators of eutrophication in recent sediments of Frains Lake, Michigan, U.S.A. Hydrobiologia 101: 195–202.
- Charvet, S., Vincent, W.F. & Lovejoy, C. (2012) Chrysophytes and other protists in HighArctic lakes: Molecular gene surveys, pigment signatures and microscopy. Polar Biology 35 (5): 733–748. https://doi.org/10.1007/s00300-011-1118-7
- Cronberg, G. & Sandgren, C.D. (1986) A proposal for the development of standardized nomenclature and terminology for chrysophycean statospores. In: Kristiansen, J. & Andersen, A. (Ed.) Chrysophytes: aspects and problems. Cambridge University Press, Cambridge, UK, pp. 317–328
- Duff, K.E., Zeeb, B.A. & Smol, J.P. (1995) Altas of Chrysophycean Cysts. Kluwer Academic Publishers, Dordrecht, 189 pp. https://doi.org/10.1007/978-94-017-0809-8
- Firsova, A.D. & Likhoshway, Ye.V. (2006) Atlas of chrysophycean cysts of Lake Baikal. Nauka, Novosibirsk, 148 pp [in Russian]
- Firsova, A.D., Kuzmina, A.E., Tomberg, I.V., Potemkina, T.G. & Likhoshway, Ye.V. (2008) Seasonal Dynamics of Chrysophyte stomatocyst formation in the plankton of Southern Baikal. Biology Bulletin 35 (5): 507–514. [in Russian] https://doi.org/10.1134/S1062359008050129
- Firsova, A.D., Bessudova, A.Y. & Likhoshway, Y.V. (2017) New data of chrysophycean stomatocysts from Lake Baikal. Acta Biologica Sibirica 3 (4): 113–122. [in Russian] https://doi.org/10.14258/abs.v3i4.3637
- Firsova, A.D., Bessudova, A.Yu. & Likhoshway, Ye.V. (2018) Chrysophycean stomatosysts in tributaries of northern limit of Lake Baikal. Acta Biologica Sibirica 4 (4): 25–44. [in Russian] https://doi.org/10.14258/abs.444872
- Firsova, A.D., Bessudova, A.Y., Sorokovikova, L.M., Zhychenko, N.A., Istomina, N.A., Sezko, N.P. & Likhoshway, Y.V. (2019) Stomatocyst diversity in the first years of the plankton species structure formation in Reservoir of Hydropower Plants (Boguchany Reservoir, Russia). Phytotaxa 424 (1): 18–32. https://doi.org/10.11646/phytotaxa.424.1.2
- Firsova, A.D., Bessudova, A.Y., Kopyrina, L.I. & Likhoshway, Y.V. (2020) Chrysophycean stomatocysts from two unique lakes of Yakutia (Russia). Phytotaxa 474 (3): 197–217. https://doi.org/10.11646/phytotaxa.474.3.1
- Hernández-Almeida, I., Grosjean, M., Tylmann, W. & Bonk, A. (2015) Chrysophyte cyst-inferred variability of warm season lake water chemistry and climate in northern Poland: training set and downcore reconstruction. Journal of Paleolimnology 53: 123–138. https://doi.org/10.1007/s10933-014-9812-4
- Ignatenko, M., Yatsenko-Stepanova, T. & Kapustin, D. (2022) Morphological variability of stomatocyst 131 Pang & Wang (Chrysophyceae) from a freshwater shallow lake in South Urals, Russia. Phytotaxa 542 (1): 100–104. https://doi.org/10.11646/phytotaxa.542.1.10
- Ignatenko, M.E. & Yatsenko-Stepanova, T.N. (2022) Diversity of chrysophycean stomatocysts in the steppe zone of the South Urals. Doklady Biological Sciences 506: 184–190. https://doi.org/10.1134/S0012496622050040
- Ignatenko, M.E. & Yatsenko-Stepanova, T.N. (2023) Stomatocysts of chrysophyte algae of water bodies of the Buzuluksky Bor National Park. Botanicheskiy journal 108 (7): 617. https://doi.org/10.31857/S0006813623070025
- Kamenik, C., Agusti-Panareda, A., Applebys, P.G., Dearing, J.A., Shilland, E.M., Šporka, F., Štefkova, E. & Thompson, R. (2005) Paleolimnological evidence for atmospheric pollution, climate and catchment-related changes in alpine chrysophyte stomatocyst assemblages (Tatra, Slovakia). Nova Hedwigia 128: 275–293.
- Kapustin, D.A., Philippov, D.A. & Gusev, E.S. (2016) Four new chrysophycean stomatocysts with true complex collar from the Shichengskoe raised bog in Central Russia. Phytotaxa 288 (3): 285–290. https://doi.org/10.11646/phytotaxa.288.3.10
- Kapustin, D.A. & Kapustina, N.V. (2018) New Records of Chrysococcus furcatus (Chrysophyceae) in Russia. Inland Water Biology 11: 384–386. [in Russian] https://doi.org/10.1134/S1995082918040090
- Kapustin, D.A., Sterlyagova, I.N. & Patova, E.N. (2019) Morphology of Chrysastrella paradoxa stomatocysts from the Subpolar Urals (Russia) with comments on related morphotypes. Phytotaxa 402 (6): 295–300. https://doi.org/10.11646/phytotaxa.402.6.4
- Korkonen, S., Weckström, J. & Korhola, A. (2020) Biogeography and ecology of freshwater chrysophyte cysts in Finland. Hydrobiologia 847: 487–499. https://doi.org/10.1007/s10750-019-04112-0
- Kristiansen, J. (2005) Golden Algae: A Biology of Chrysophytes. A.R.G. Gantner Königstein: Verlagdistributed by Koeltz Scientific Books, Germany, 167 pp.
- Kristiansen, J. & Škaloud, P. (2017) Chrysophyta. In: Archibald, J.M., Simpson, A.G.B. & Slamovits, C.H. (Eds.) Handbook of the Protists, 2nd ed. Springer International Publishing: Cham, Switzerland, pp. 331–366. https://doi.org/10.1007/978-3-319-28149-0_43
- Mrozińska, T., Olech, M. & Massalski, A. (1998) Cyst of the Chrysophyceae from King George Island (South Shetland Islands, Antartica). Polish Polar Research 19 (3/4): 205–210.
- Pang, W. & Wang, Q. (2016) Chrysophycean stomatocysts from Xinjiang Province, China. Phytotaxa 288 (1): 41–50. https://doi.org/10.11646/phytotaxa.288.1.4
- Pang, W. & Wang, Q. (2017) Chrysophycean stomatocysts from the Da Hinggan Mountains. Science Press, Beijing, 253 pp.
- Pang, W., Van De Vijver, B., Wu, H. & Li, Y. (2022) New chrysophyte stomatocysts from high mountain lakes in Three Parallel Rivers of Yunnan Protected Areas, China. Fottea 22 (2): 228–237. https://doi.org/10.5507/fot.2022.004
- Pla, S. (2001) Chrysophycean cysts from Pirenees. J Cramer, Berlin, 237 pp.
- Pla, S. & Anderson, N.J. (2005) Environmental factors correlated with chrysophyte cyst assemblages in low arctic lakes of southwest Greenland. Journal of Phycoogy 41: 957–974. https://doi.org/10.1111/j.1529-8817.2005.00131.x
- Pla-Rabés, S. & Catalan, J. (2011) Deciphering chrysophyte responses to climateseasonality. Journal of Paleolimnology 46 (1): 139–150. https://doi.org/10.1007/s10933-011-9529-6
- Rivera-Rondón, C.A. & Catalan, J. (2017) The ratio between chrysophycean cysts and diatoms in temperate, mountain lakes: some recommendations for its use in paleolimnology. Journal of Paleolimnology 57: 273–285. https://doi.org/10.1007/s10933-017-9946-2
- Safronova, T.V. (2019) Golden algae (Chrysophyceae, Synurophyceae) of specially protected natural territories of the Leningrad region and St. Petersburg: Dis. ... kand. biol. nauk. St. Petersburg. 204 pp.
- Shadrina, S.N. (2019) A variety of stomatocysts of golden algae (Chrysophyta) of the Gulf of Finland, Baltic Sea. Botanicheskiy Zhurnal 104 (5): 684–698. [in Russian] https://doi.org/10.1134/S0006813619050120
- Shadrina, S.N. & Safronova, T.V. (2020) Chrysophycean stomatocysts (Chrysophyta) in the algal flora of the Peterhof parks. Botanicheskiy Zhurnal 105 (3): 253. [in Russian] https://doi.org/10.31857/S0006813620030084
- Smol, J.P. (1985) The ratio of diatom frustules to chrysophycean statospores: a useful paleolimnological index. Hydrobiologia 123: 199–204. https://doi.org/10.1007/BF00034378
- Snit’ko, L.V., Snit’ko, V.P., Blinov, I.A. & Voloshko, L.N. (2016) Chrysophycean algae (Chrysophyceae, Synurophyceae) in waterbodies of the eastern foothills of the South and Middle Uras. Botanicheskiy Zhurnal 101 (12): 1361. [in Russian] https://doi.org/10.1134/S0006813616120012
- Snit’ko, L.V. & Snit’ko, V.P. (2024) Diversity of Stomatocysts of Golden Algae (Chrysophyceae) from the Plankton of Reservoirs of the Mountain Forest Zone of the Southern Urals. Inland Water Biology 17 (4): 543–559. https://doi.org/10.1134/S1995082924700196
- Van De Vijver, B. & Beyens, L. (2000) Chrysophycean stomatocysts from freshwater habitats of the Strømness Bay area, South Georgia, Antarctica. Canadian Journal of Botany 78 (1): 88–97. https://doi.org/10.1139/b99-165
- Voloshko, L.N. (2016) Chrysophycean algae (Chrysophyta) in waterbodies of the Northwestern Russia. Diversity Of Stomatocysts. Botanicheskiy journal 101 (11): 1257–1281. [in Russian] https://doi.org/10.1134/S0006813616110016
- Voloshko, L.N. (2017) Chrysophycean Algae in Water Bodies of the Northern Russia. Renome, Saint-Petersburg, 380 pp. [in Russian]
- Vorobyova, S.S., Pomazkina, G.V., Baranova, E.Yu., Likhoshway, Y.V. & Sandgren, C.D. (1996) Chrysophycean cysts (stomatocyst) from Lake Baikal and Irkutsk Reservior, Siberia. Journal of Paleolimnology 15: 271–277. https://doi.org/10.1007/BF00213046
- Wilkinson, A.N., Zeeb, B.A. & Smol, J.P. (2001) Atlas of Chrysophycean Cysts. Kluwer Academic Publishers, Dordrecht, 169 pp. https://doi.org/10.1007/978-94-017-0811-1
