582.296
This electron microscopy study investigates morphological features of the shell of the diatom alga Semiorbis hemicyclus from Lake Pizanets (Republic of Karelia). Quantitative (valve length and width, number of striae) and qualitative (valve shape, position and structure of striae and raphe) characteristics are analyzed. Original and literature data make it possible to expand the diagnosis of this species.
Republic of Karelia, Lake Pizanets, Bacillariophyta, Semiorbis hemicyclus, electron microscopy, morphology
1. Balonov I.M. Podgotovka vodorosley k elektronnoy mikroskopii // Metodika izucheniya biogeocenozov vnutrennih vodoemov. M.: Nauka. 1975. C. 87–89.
2. Genkal C.I. K voprosu o morfologicheskoy izmenchivosti nekotoryh shiroko rasprostranennyh i redkih vidov roda Navicula (Bacillariophyta) // Novosti sistematiki nizshih rasteniy. 2014. T. 48. C. 38–49. DOI:https://doi.org/10.31111/nsnr/2014.48.38.
3. Genkal S.I., Komulaynen S.F. Diatomovye vodorosli v al'gocenozah ozera Pizanec (respublika Kareliya) // Botanicheskiy zhurnal. 2023. № 6. S. 534–546. DOI:https://doi.org/10.31857/S0006813623060042.
4. Genkal S.I., Kulikovskiy M.S., Stenina A.S. Izmenchivost' osnovnyh strukturnyh elementov stvorki nekotoryh vidov roda Navicula (Bacillariophyta) // Biologiya vnutrennih vod. 2007. № 2. C. 20–25.
5. Genkal S.I., Chekryzheva T.A., Komulaynen S.F. Diatomovye vodorosli vodoemov i vodotokov Karelii. M.: Nauchnyy mir, 2015. 202 s.
6. Genkal C.I., Yarushina M.I. Vidy roda Genkalia (Bacillariophyta) v Rossii: morfologiya, taksonomiya, rasprostranenie // Botanicheskiy zhurnal. 2020. T.105, № 1. C. 3–14. DOI:https://doi.org/10.31857/S0006813620010081.
7. Komulaynen S.F., Chekryzheva T.A., Vislyanskaya I.G. Al'goflora ozer i rek Karelii. Taksonomicheskiy sostav i ekologiya. Petrozavodsk: Karel'skiy nauchnyy centr RAN, 2006. 78 s.
8. Kulikovskiy M.S., Gluschenko A.N., Genkal S.I., Kuznecova I.V. Opredelitel' diatomovyh vodorosley Rossii. Yaroslavl': “Filigran'”. 2016. 804 s.
9. Lozovik P.A. Geohimicheskaya klassifikaciya poverhnostnyh vod gumidnoy zony na osnove ih kislotno-osnovnogo ravnovesiya // Vodnye resursy. 2013. № 40(6). S. 583–592. DOI:https://doi.org/10.7868/S0321059613060072.
10. Opredelitel' presnovodnyh vodorosley SSSR. Vyp. 4. Diatomovye vodorosli. M.: Sovetskaya nauka, 1951. 619 s.
11. Edlund M., Burge D. Semiorbis. In Diatoms of North America. 2015. Retrieved October 24, 2024, from https://diatoms.org/genera/semiorbis
12. Edlund M.B., Burge D.R.L., Andersen N.A., Vandermeulen D.D., Stone J.R., Van de Vijver B. The genus Semiorbis (Eunotiaceae, Bacillariophyta) in North America // Diatom Research. 2021. Vol. 36, № 1. P. 37–48. DOI:https://doi.org/10.1080/0269249X.2021.1875053.
13. Genkal S.I., Yarushina M.I. Taxonomy, morphology and distribution of a rare species Navicula schmassmannii Hust. (Bacillariophyta) // Int. J. Algae. 2017. Vol. 19, Is. 3. P. 241–248. DOI:https://doi.org/10.1615/InterJAlgae.v19.i3.40.
14. Genkal S.I., Yarushina M.I. Species of the genus Geissleria (Bacillariophyta) in Russia: morphology, taxonomy and distribution // Inland Water Biology. 2018. Vol. 11, № 4. P. 387–395. DOI:https://doi.org/10.1134/S1995082918040077.
15. Genkal S.I., Yarushina M.I. Species of the genus Hippodonta (Bacillariophyta) in Russia: morphology, taxonomy and distribution // Int. J. Algae. 2019. Vol. 21, № 3. P. 199–216. DOI:https://doi.org/10.1615/InterJAlgae.v21.i3.10.
16. Gronlund T., Kauppila T. Holocene history of Lake Soldatskoje (Kola Peninsula, Russia) inferred from sedimentary assemblages // Boreas. 2002. Vol. 31, № 3. P. 273–284.
17. Krammer K., Lange-Bertalot H. Bacillariophyceae 3. Teil: Centrales, Fragilariaceae, Eunotiaceae // Süβwasserflora von Mitteleuropa. Stuttgart–Jena: Gustav Fischer Verlag, 1991. Band 2/3. 576 p.
18. Patrick R., Reimer C.W. The diatoms of the United States, exclusive of Alaska and Hawaii // Monographs of the Academy of Natural Sciences Philadelphia. 1966. Vol. 1, № 13. 688 p.
19. Reid G., Williams D.M. Notes on the genus Semiorbis Patrick with a description of a new species // Diatom Research. 2010. Vol. 25, № 2. P. 355–365. DOI:https://doi.org/10.1080/0269249X.2010.9705856.
20. Round F.E., Crawford R.M., Mann D.G. The diatoms. Biology and morphology of the genera. Cambridge: Cambridge University Press, 1990. 747 p.
