The list of rotifer and micro-crustacean taxa identified in the inland waters of the regions of Russian Arctic
The list of species of zooplankton and meiofauna contains our own findings and literature data [2-8] chiefly for the period from the 1960-s to the 2010-s (1960-2017). Our own findings were obtained by analyzing samples of zooplankton, meiobenthos, and two cores of bottom sediments that we collected once in summer. This work was undertaken within the framework of the Freshwater Circumpolar Biodiversity Monitoring Program (CBMP-Freshwater) of CAFF. The work was performed in part as Federal Tasks to the Department of Animal Ecology of the Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences (АААА-А17-117112850235-2) (to EF and OK), to the Institute of Biophysics of the Federal Research Center “Krasnoyarsk Science Center” of the Siberian Branch of the Russian Academy of Sciences (project No. 51.1.1) and the Siberian Federal University (project No. FSRZ-2020-0006) (to OD). The paleolimnological part of this work was supported by grant from Russian Science Foundation (project 20-17-00135). L. Frolova and G. Nigamatzyanova were supported by the subsidy allocated to Kazan Federal University for the state assignment #671-2020-0049 in the sphere of scientific activities and by the Russian Foundation for Basic Research (grant 18-05-00406). The work was partly financially supported by the RFBR grant: 20-04-00145_а (to EF). References  E. Fefilova, O. Dubovskaya, L. Frolova, E. Abramova, O. Kononova, G. Nigamatzyanova, I. Zuev, E. Kochanova, Biogeographic patterns of planktonic and meiobenthic fauna diversity in inland waters of the Russian Arctic. Freshwater Biology (2020), 00:1‒17.  A.N. Kruglova, Zooplankton of the Kola River (the Barents Sea Basin), Proceeding of Karelian Scientific Centre of RAS. 4 (2009), 85‒89. (In Russian).  E.S. Makartseva, Zooplankton of lakes of different landscapes of Kola Peninsula, in: V.G. Drabkova, T.D. Slepukhina (Eds), Lakes of different landscapes of Kola Peninsula. Nauka, Leningrad. (1974), 143‒179. (In Russian).  E.V. Borutskiy, Crustacea. Freshwater Harpacticoida, Fauna of U.S.S.R., Vol. 3(4). Academy of Sciences of USSR Press, Moscow, Leningrad. (1952), 425 pp. (In Russian).  Hydrobiological study and fish agriculture application in lakes of the Extreme North, A.M. Gidalevich, M.T. Chernyakova (Eds), Nauka, Moscow. (1966) (In Russian).  Flora and fauna of the waterbodies of the European North (case study of lakes of Bolshezemelskaya tundra), M.V. Getsen (Ed), Nauka, Leningrad. (1978), 178 pp. (In Russian).  N.V. Vekhov, Life cycles of copepods of the Diaptomidae family (Crustacea, Calanoida) in waterbodies of the Subarctic Region in Europe, Ekologiya 3 (1988), 54-66. (In Russian).  N.G. Sheveleva, Diversity of planktonic fauna of Putorana plateau water bodies, in: A.A. Romanov (Ed), Bird and animal communities of the Putorana Plateau: studies and conservation, Rosselhozakademia Press, Moscow. (2006), 239‒251. (In Russian).
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Specifically, the data for Region I included our sediment core information from one lake (Antyuh-Lambina) obtained in 2015 and lists of the species of zooplankton and benthic micro-crustaceans in waterbodies on the Kola Peninsula [2, 3, 4]. Data set for Region II included our own list of planktonic and benthic micro-fauna species of the Pechora River Delta based on 60 plankton samples collected in 2016 and 2017. For Region III, we used our data on more than 55 lentic waterbodies (lakes, ponds and pools), our unpublished data on lentic and lotic waters, and lists of planktonic and benthic micro-fauna of the Bolshezemelskaya tundra provided by other authors [5, 6, 7], for the entire period of 1960-2013; the total number of samples was more than 360 planktonic and more than 400 benthic ones. Our sediment core information from one lake of Region III (Lake Kharbey) obtained in 2012 was also included in the species list. Region IV comprised only our own list of zooplankton and meiofauna species from 9 lakes located on the western slope of the Ural Mountains. They were studied in 2003 (2 lakes), 2010 (1 lake), and 2013 (6 lakes); 21 plankton and 23 benthos samples were taken. For Region V, we provided our list of zooplankton species from 38 waterbodies (lakes, including deep and large lakes – Lama, Glubokoe, and Kutaramakan, and ponds), with additional species from the list of plankton fauna for lakes and reservoirs of the Putorana Plateau compiled by . All 38 waterbodies were sampled during 2001-2004, and 4 of 38 again in 2011; the total number of samples was 94. Data  embraced the period from the 1960-s to the 2000-s. In Region VI, we used our plankton fauna list from 20 waterbodies (lakes and ponds) sampled in 1995, 1996 (4 waterbodies), during 2000-2017 (14 waterbodies) and 2014-2016 (2 lakes). In total, 558 plankton samples from this region were analyzed. For Region VII, we only used our own data on zooplankton composition in one lake (Suturuoha) and 27 polygonal ponds in the lower reaches of the Indigirka River. From the Suturuoha Lake, 16 plankton samples were collected in 2015; from ponds of this region 27 plankton samples (1 per waterbody) were taken in 2011. Zooplankton samples were collected using plankton nets or Ruttner samplers, all benthic micro-crustaceans in fine sediments were sampled using the Petersen dredge. For the paleoecological study of cladocerans from a Bolshezemelskaya tundra lake, a short (25 cm) sediment core was collected using a UWITEC piston corer. From a Kola Peninsula lake, a sediment core was collected with a rod-operated half-tube corer All subsamples were examined under a light microscope in laboratory.