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Abstract

The influence of environmental factors on the horizontal community structure of zooplankton over the southern Kerguelen Plateau was investigated during summer in 2016. Zooplankton abundance ranged from 1490 to 363,484 ind. 1000 m-3, with highest numbers observed in the eastern and central areas. Based on cluster analysis the zooplankton were divided into six groups (A−F), and these were only distinguished based on water masses and frontal systems. Groups A to C had abundant zooplankton and were consistent with areas of high chlorophyll a concentration. Group D represented low abundance near the southern Antarctic Circumpolar Current front, while group E was clustered south of the Southern Boundary and group F comprised two stations to the east of the Fawn Trough. Generalised linear model (GLM) highlighted both fronts and chlorophyll a concentration as drivers of overall zooplankton distribution. However, the population structures of key species were more likely a result of species-specific life cycles rather than water masses and frontal systems.

Item Type:	Article
Authors/Creators:	Matsuno, K and Wallis, JR and Kawaguchi, S and Bestley, S and Swadling, KM
Keywords:	Southern Ocean, Kerguelen plateau, zooplankton, copepods, marine survey, Calanoides acutus, Calanus propinquus, Metridia gerlachei, Metridia lucens, Rhincalanus gigas
Journal or Publication Title:	Deep-Sea Research. Part 2
Publisher:	Pergamon-Elsevier Science Ltd
ISSN:	0967-0645
DOI / ID Number:	https://doi.org/10.1016/j.dsr2.2020.104788
Copyright Information:	© 2020 Elsevier Ltd. All rights reserved.
Related URLs:	Google Scholar: Bestley, S UTAS Profile: Bestley, S UTAS Profile: Swadling, KM
Item Statistics:	View statistics for this item

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