An approach to bioassess pelagic ciliate biodiversity at different taxonomic resolutions in response to various habitats in the Amundsen Sea (Antarctica)

Jiang, Yong; Liu, Qian; Yang, Eun Jin; Lee, Young-Ju; Lee, Sanghoon

doi:10.1007/s00300-015-1801-1

Cited by 8 publications

(1 citation statement)

References 43 publications

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“…In the austral assemblage, Dolan et al (2012) divided the austral species (40°S-78°S) into Southern Ocean endemic species (only found south of 40°S) and widespread species (those with a geographic range extending into the Southern Ocean). In Antarctic waters, ciliate abundance was observed in different habitats (oceanic areas, transitional areas, polynyas, edges of glaciers, and edges of sea ice) in the Amundsen Sea (e.g., Jiang et al 2014Jiang et al , 2015Jiang et al , 2016 and the Weddell Sea (e.g., Heinbokel and Coats 1986;Garrison and Buck 1989;Garrison et al 1991;Gowing and Garrison 1992). These investigations generally evaluated ciliate assemblages at a horizontal level while providing very little vertical distribution information.…”

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confidence: 99%

Planktonic ciliates in different water masses in open waters near Prydz Bay (East Antarctica) during austral summer, with an emphasis on tintinnid assemblages

Chen

Dong

et al. 2018

Polar Biol

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Planktonic ciliates are important microzooplankton in pelagic ecosystems. Previous studies in Antarctic waters have only investigated ciliate assemblages in different habitats without considering water masses. In this article, we report the characteristics of ciliate assemblages in different water masses in open waters near Prydz Bay (East Antarctica) during austral summer. Three water masses were identified according to temperature and salinity: Summer Surface Water (SSW), Winter Water (WW), and Circumpolar Deep Water (CDW). SSW was further divided into SSW Chl a < 3 (in vivo Chlorophyll a > 3 mg m −3) and SSW Chl a < 3 (in vivo Chlorophyll a < 3 mg m −3). Ciliate abundance and biomass in water masses decreased in the order: SSW > WW > CDW. SSW Chl a > 3 had a higher proportion (38.2%) of tintinnids to the total ciliate abundance and larger aloricate ciliates (ciliates in the 10-20 µm size class were < 15% of the total aloricate ciliate abundance) than in other water masses. WW had a higher proportion (> 30%) of Southern Ocean endemic tintinnid species in total tintinnid abundance than in other water masses. Each water mass had the following indigenous tintinnid species: SSW, Salpingella sp., Codonellopsis gaussi; WW, Salpingella costata, S. faurei, Cymatocylis affinis/convallaria forma drygalskii, and C. vanhoeffeni. Laackman-niella naviculaefera and C. affinis/convallaria forma cristallina were present at high abundance in both WW and SSW Chl a > 3. Upwelling caused discontinuity of the ciliate distribution. Our results will help predict the spatial and temporal variations of ciliate assemblages and other plankton according to the dynamics of water masses in Antarctic waters.

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