Abstract and keywords
Abstract (English):
The paper provides the first results of a study of the qualitative and quantitative structure of the community of bottom meiofauna (meiobenthos) in shallow, hypereutrophic Lake Nero (Volga River basin, Yaroslavl region, Russia). In the samples, collected in early September 2017, 106 representatives from 16 systematic groups of aquatic organisms were found. About half of them had not been previously recorded in the lake's fauna. The species composition of Gastrotricha, Nematoda, Tardigrada, Acari, Harpacticoida, and Ostracoda was analyzed in the water body for the first time. The new representatives were also registered among Annelida, Cladocera, Cyclopoida, and Chironomidae, the diversity of which was previously analyzed in the study of zooplankton, macrozoobenthos, and fauna of the lake's aquatic vegetation. It is established that at the end of the vegetation season, the meiobenthos of the lake characterizes by relatively high taxonomic richness, diversity, and quantitative parameters. The average number of taxa in the samples and the value of the Shannon-Weaver index were 35±2 and 3.1±0.2 bit/ind., and the average abundance and biomass were 523±65 thous. ind./m2 and 3.2±0.3 g/m2, respectively. Based on the density index, the circle of the main (dominant) community members in the studied period was outlined. The major position among the dominants was occupied by the cladocerans Coronatella rectangula, the absolute and relative abundance and biomass of which at the stations reached 500 thous. ind./m2 (69%) and 2.4 g/m2 (47%), respectively.

Keywords:
hypereutrophic lake, bottom meiofauna, taxonomic composition, biodiversity, abundance, biomass
Text
Publication text (PDF): Read Download
References

1. Arhipova N.R. Zavisimost' mezhdu lineynymi razmerami i massoy tela u nekotoryh tubificid // Biologiya vnutrennih vod. Informacionnyy byulleten'. 1988. № 79. S. 44–48.

2. Balushkina E.V., Vinberg G.G. Zavisimost' mezhdu dlinoy i massoy tela planktonnyh rakoobraznyh // Eksperimental'nye i polevye issledovaniya biologicheskih osnov produktivnosti ozer. L.: ZIN AN SSSR, 1979. S. 58–79.

3. Bentos Uchinskogo vodohranilischa. M.: Nauka. 1980. 251 s.

4. Bikbulatov E.S., Bikbulatova E.M., Litvinov A.C., Poddubnyy S.A. Gidrologiya i gidrohimiya oz. Nero. Rybinsk: Rybinskiy dom pechati, 2003. 192 s.

5. Gurvich V.V. Mikro- i mezobentos // Bespozvonochnye i ryby Dnepra i ego vodohranilisch. K.: Naukova dumka, 1989. S. 73–95.

6. Gusakov V.A. Meyobentos Gor'kovskogo vodohranilischa // Biologicheskie resursy presnyh vod: bespozvonochnye. Rybinsk: Izd-vo OAO “Rybinskiy Dom pechati”, 2005. S. 98–141.

7. Gusakov V.A. Meyobentos reki Oki // Ekologiya vodnyh bespozvonochnyh. Nizhniy Novgorod: Vektor TiS, 2007a. S. 76–105.

8. Gusakov V.A. Meyobentos Rybinskogo vodohranilischa. M.: Tovarischestvo nauchnyh izdaniy KMK, 2007b. 155 s.

9. Kurashov E.A. Meyobentos kak komponent ozernoy ekosistemy. SPb.: Alga-Fond, 1994. 224 s.

10. Kurashov E.A. Meyobentos v presnovodnyh ekosistemah. Ego rol' i perspektivy issledovaniya // Aktual'nye voprosy izucheniya mikro-, meyozoobentosa i fauny zarosley presnovodnyh vodoemov. Nizhniy Novgorod: Vektor TiS, 2007a. S. 36–71.

11. Kurashov E.A. Metody i podhody dlya kolichestvennogo izucheniya presnovodnogo meyobentosa // Aktual'nye voprosy izucheniya mikro-, meyozoobentosa i fauny zarosley presnovodnyh vodoemov. Nizhniy Novgorod: Vektor TiS, 2007b. S. 5–35.

12. Luferova L.A. Vesovaya harakteristika nekotoryh presnovodnyh Ostracoda // Biologiya vnutrennih vod. Informacionnyy byulleten'. 1970. № 5. S. 35–39.

13. Metodika izucheniya biogeocenozov vnutrennih vodoemov. M.: Nauka, 1975. 240 s.

14. Metodicheskie rekomendacii po sboru i obrabotke materialov pri gidrobiologicheskih issledovaniyah na presnovodnyh vodoemah. Zoobentos i ego produkciya. L.: Minrybhoz RSFSR, GosNIORH, ZIN AN SSSR, 1984. 52 s.

15. Morduhay-Boltovskoy F.D. Materialy po srednemu vesu vodnyh bespozvonochnyh basseyna Dona // Trudy problemnyh i tematicheskih soveschaniy ZIN. 1954. № 2. S . 223–241.

16. Pankratova V.Ya., Balushkina E.V. Zavisimost' massy tela ot dliny i intensivnosti obmena u lichinok hironomid // Osnovy izucheniya presnovodnyh ekosistem. L.: ZIN AN SSSR, 1981. S. 92–97.

17. Pesenko Yu.A. Principy i metody kolichestvennogo analiza v faunisticheskih issledovaniyah. M.: Nauka. 1982. 287 s.

18. Protasov A.A. Bioraznoobrazie i ego ocenka. Konceptual'naya diversikologiya. Kiev: Institut gidrobiologii NAN Ukrainy, 2002. 105 s.

19. Sovremennoe sostoyanie ekosistemy ozera Nero. Rybinsk: Institut biologii vnutrennih vod, 1991. 176 s.

20. Sostoyanie ekosistemy ozera Nero v nachale XXI veka. M.: Nauka, 2008. 406 s.

21. Calolihin S.Ya. Opredelenie vesa presnovodnyh nematod // Evolyuciya, sistematika, morfologiya i ekologiya svobodnozhivuschih nematod. L.: ZIN AN SSSR, 1981. S. 80–85.

22. Chislenko L.L. Nomogrammy dlya opredeleniya vesa vodnyh organizmov po razmeram i forme tela. L.: Nauka, 1968. 107 s.

23. Sheremetevskiy A.M. Rol' meyobentosa v biocenozah shel'fa yuzhnogo Sahalina, vostochnoy Kamchatki i Novosibirskogo melkovod'ya. L.: Nauka, 1987. 135 s.

24. Scherbina G.H. Godovaya dinamika makrozoobentosa otkrytogo melkovod'ya Volzhskogo plesa Rybinskogo vodohranilischa // Zoocenozy vodoemov basseyna Verhney Volgi v usloviyah antropogennogo vozdeystviya. SPb: Gidrometeoizdat. 1993. S. 108–144.

25. Schmid-Araya J.M., Hildrew A.G., Robertson A., Schmid P.E., Winterbottom J. The importance of meiofauna in food webs: evidence from an acid stream // Ecology. 2002. Vol. 83. P. 1271–1285. DOI: 10.1890/0012-9658(2002)083[1271:TIOMIF]2.0.CO;2

26. Giere O. Meiobenthology. The microscopic motile fauna of aquatic sediments. Berlin, Heidelberg: Springer-Verlag, 2009. 527 p. DOI: 10.1007/978-3-540-68661-3

27. Hulings N.C., Gray J.S. A manual for the study of meiofauna // Smithsonian Contributions to Zoology. 1971. № 78. 84 p. DOI: 10.5479/si.00810282.78

28. Limnofauna Europaea. Stuttgart, N. Y., Amsterdam: Gustav Fischer Verlag & Swets en Zeitlinger B.V., 1978. 532 p.

29. Williams D.D., Williams N.E. A counterstaining technique for use in sorting benthic samples // Limnology and Oceanography. 1974. Vol. 19, № 1. P. 152–154. DOI: 10.4319/lo.1974.19.1.0152

Login or Create
* Forgot password?