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Meso-zooplankton abundance and spatial distribution off Lutzow-Holm Bay during austral summer 2007-2008


Makabe, R and Tanimura, A and Tamura, T and Hirano, D and Shimada, K and Hashihama, F and Fukuchi, M, Meso-zooplankton abundance and spatial distribution off Lutzow-Holm Bay during austral summer 2007-2008, Polar Science, 12 pp. 25-33. ISSN 1873-9652 (2017) [Refereed Article]

Copyright Statement

© 2016 Elsevier B.V. and NIPR

DOI: doi:10.1016/j.polar.2016.09.002


To elucidate spatial differences in mesozooplankton community structure in local scale, vertical hauls using a 60-μm mesh closing net were carried out off Lützow-Holm Bay in January 2008. All of the zooplankton samples collected from three layers (0–100, 100–200, and 200–500 m) at seven stations were dominated by Oithona spp., Oncaea spp., Ctenocalanus citer, Microcalanus pygmaeus, and copepod nauplii. The cluster analysis of mesozooplankton abundances showed three distinct groups according to sampling depth, which appeared to be due to the preferential vertical distribution of dominant copepods. The other cluster analysis on integrated abundance upper 500 m revealed that mesozooplankton community structures at stations located on the western and eastern edges of the observation area (Cluster A) differed from those at the central stations (Cluster B). Abundance of copepod nauplii, Oithona spp., and C. citer differed between Clusters A and B, which was likely caused by differences in recruitment and early development in the dominant copepods, being associated with the timing and duration of ice edge blooms. This suggests that such heterogeneity in abundance and recruitment/development of dominant taxa was likely caused by local heterogeneity in sea ice dynamics. This may affect our understanding of zooplankton distribution.

Item Details

Item Type:Refereed Article
Keywords:zooplankton, small copepods, sea ice, Lützow-Holm Bay
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine biodiversity
UTAS Author:Tamura, T (Dr Takeshi Tamura)
ID Code:114491
Year Published:2017
Web of Science® Times Cited:4
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2017-02-16
Last Modified:2018-07-27

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