Abe Y., Matsuno K., Fujiwara A., Yamaguchi A. (2020) Review of spatial and inter-annual changes in the zooplankton community structure in the western Arctic Ocean during summers of 2008–2017. Prog. Oceanogr. 186: 102–391 Agatha S. and Reidel-Lorjé J.C. (2006) Redescription of Tintinnopsis cylindrica Daday, 1887 (Ciliophora: Spirotricha) and unification of tintinnid terminology. Acta Protozool., 45: 137–151 Amano K., Abe Y., Matsuno K., Yamaguchi A. (2019) Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007. Pol. Sci. 19: 112–119 Arrigo K. R., van Dijken G. L. (2015) Continued increases in Arctic Ocean primary production. Prog. Oceanogr. 136: 60–70 Baker M. R., Kivva K. K., Pisareva M. N., Watson J. T., Selivanova J. (2020) Shifts in the physical environment in the Pacific Arctic and implications for ecological timing and conditions. Deep Sea Res. Part II 177: 104–802 Bursa A. (1963) Phytoplankton in coastal waters of the Arctic Ocean at Point Barrow Alaska. Arctic 16: 239–262 Connell P. E., Michel C., Meisterhans G., Arrigo K. R., Caron D. A. (2018) Phytoplankton and bacterial dynamics on the Chukchi Sea Shelf during the spring-summer transition. Mar. Ecol. Prog. Ser. 602: 49–62 Danielson S. L., Ahkinga O., Ashjian C., Basyuk E., Cooper L. W., Eisner L., Farley E., Iken K. B., Grebmeier J. M., Juranek L., Khen G., Jayne S. R., Kikuchi T., Ladd C., Lu K., McCabe R. M., Moore G. W. K., Nishino S., Ozenna F., Pickart R. S., Ployakov I., Stabeno P. J., Thoman R., Williams W. J., Wood K., Weingartner T. J. (2020) Manifestation and consequences of warming and altered heat fluxes over the Bering and Chukchi Sea continental shelves. Deep Sea Res. Part II 177: 104–781 Davis C. C. (1981) Variations of lorica shape in the genus Ptychocylis (Protozoa: Tintinnina) in relation to species identification. J. Plankton Res. 3: 433–443 Davis C. C. (1985) Acanthostomella norvegica (Daday) in Insular Newfoundland waters, Canada (Protozoa: Tintinnina). Int. Rev. Ges. Hydrobiol. 70: 21–26 Dolan J. R. (2010) Morphology and ecology in tintinnid ciliates of the marine plankton: correlates of lorica dimensions. Acta Protozool. 49: 235–244 Dolan J. R., Yang E. J. (2017) Observations of apparent lorica variability in Salpingacantha (Ciliophora: Tintinnida) in the Northern Pacific and Arctic Oceans. Acta Protozool. 56: 217–220 Dolan J. R., Yang E. J., Kim T. W., Kang S. H. (2014) Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea. Acta Protozool. 53: 101–113 Dolan J. R., Pierce R. W., Yang E. J. (2017). Tintinnid ciliates of the marine microzooplankton in Arctic Seas: a compilation and analysis of species records. Pol. Biol. 40: 1247–1260 Hada Y. (1937) The fauna of Akkeshi Bay IV. The pelagic ciliata. J. Fac. Sci. Hokkaido Imperial Univ, Series 6, Zool 5: 147–216 Jung J. H., Moon J. H., Park K. M., Kim S., Dolan J. R., Yang E. J. (2018) Novel insights into the genetic diversity of Parafavella based on mitochondrial CO1 sequences. Zool. Scripta, 47: 743–755 Kofoid C. A., Campbell A. S. (1929) A Conspectus of the Marine and Freshwater Ciliata Belonging to the suborder Tintinnoinea, with Descriptions of New Species Principally from the Agassiz Expedition to the Eastern Tropical Pacific 1904–1905. Univ. Calif. Publ. Zool. 34: 1–403 Kofoid C. A., Campbell A. S. (1939) The Ciliata: The Tintinnoinea. Bull. Mus. Comp. Zool. Harvard 84: 1–473 Lee Y., Min J. O., Yang E. J., Cho K. H., Jung J., Park J., Moon J. K., Kang S. H. (2019) Influence of sea ice concentration on phytoplankton community structure in the Chukchi and East Siberian Seas, Pacific Arctic Ocean. Deep Sea Res. Part I 147: 54–64 Li H., Xu Z., Zhang W., Wang S., Zhang G., Xiao T (2016) Boreal tintinnid assemblage in the Northwest Pacific and its connection with the Japan Sea in summer 2014. PLoS ONE11: e0153379.doi:10.1371/journal.pone.0153379 Matsuno K. (2014) Spatial and temporal changes in the plankton community in the western Arctic Ocean. Mem. Fac. Fish. Sci., Hokkaido University, 56: 65–107 Matsuno K., Ichinomiya M., Yamaguchi A., Imai I., Kikuchi T. (2014) Horizontal distribution of microprotist community structure in the western Arctic Ocean during late summer and early fall of 2010. Pol. Biol. 37: 1185–1195 Neeley A. R., Harris L. A., Frey K. E. (2018) Unraveling phytoplankton community dynamics in the northern Chukchi Sea under sea-ice-covered and sea-ice-free conditions. Geophys. Res. Lett. 45: 7663–7671 Spear A., Duffy-Anderson J., Kimmel D., Napp J., Randall J., Stabeno P. (2019) Physical and biological drivers of zooplankton communities in the Chukchi Sea. Pol. Biol. 42: 1107–1124 Zhang W., Feng M., Yu Y., Zhang C., Xiao T. (2019) Vertical distribution of oceanic tintinnid (Ciliophora: Tintinnida) assemblages from the Bering Sea to Arctic Ocean through Bering Strait. Pol. Biol., 42: 2105–2117 Wang C., Li H., Xu Z., Zheng S., Hao Q., Dong Y., Zhao L., Zhang W., Zhao Y., Grégori G., Xiao T. (2020) Difference of planktonic ciliate communities of the tropical West Pacific, the Bering Sea and the Arctic Ocean. Acta Oceanol. Sin., 39: 9–17 Wang Y., Kang J., Xiang P., Wang W., Lin M. (2020) Short timeframe changes of environmental impacts on summer phytoplankton in the Chukchi Sea and surrounding areas in a regional caling. Ecological Indicators 117: 106693 Wuchang Z., Meiping F., Ying Y., Cuixia Z., Tian X. (2012) An Illustrated Guide to Contemporary Tintinnids in the World. Beijing: Science Press, 499 pp Xu G., Yang E., Jiang Y., Cho K. H., Jung J., Lee Y., Kang S. H. (2018) Can pelagic ciliates indicate vertical variation in the water quality status of western Arctic pelagic ecosystems? Mar. Poll. Bull. 133: 182–190 Yang E. J., Ha H. K., Kang S. H. (2015) Microzooplankton community structure and grazing impact on major phytoplankton in the Chukchi sea and the western Canada basin, Arctic ocean. Deep Sea Res. Part II 120: 91–102 Yokoi N., Matsuno K., Ichinomiya M., Yamaguchi A., Nishino S., Onodera J., Inoue J., Kikuchi T. (2016). Short-term changes in a microplankton community in the Chukchi Sea during autumn: consequences of a strong wind event. Biogeosciences, 13: 913–923