eCite Digital Repository

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

Citation

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 pp. 1-9. ISSN 1873-9652 (2017) [Refereed Article]


Preview
PDF (in press)
Pending copyright assessment - Request a copy
1Mb
  

DOI: doi:10.1016/j.polar.2016.09.002

Abstract

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:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
Author:Tamura, T (Dr Takeshi Tamura)
ID Code:114491
Year Published:2017
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2017-02-16
Last Modified:2017-02-16
Downloads:0

Repository Staff Only: item control page