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Type: Journal article
Title: Meso-zooplankton abundance, distribution and community composition in the eastern Great Australian Bight
Author: Van Ruth, P.
Ward, T.
Citation: Transactions of the Royal Society of South Australia, 2009; 133(2):274-283
Publisher: Royal Soc South Australia Inc
Issue Date: 2009
ISSN: 0372-1426
Statement of
Paul D. Van Ruth and Tim M. Ward
Abstract: Seasonal meso-zooplankton abundance, distribution and community composition were examined in the eastern Great Australian Bight (EGAB) in 1999 and 2000. Meteorological and oceanographical conditions in the region change markedly with season, with an upwelling circulation dominating the area during summer/autumn, and downwelling prevailing in winter. Highest zooplankton densities occurred in summer in both years of the study, and corresponded to areas of elevated chlorophyll a concentration and cool sea surface temperature, indicative of coastal upwelling. Copepods and cladocerans dominated the zooplankton community, regardless of season. However, a clear difference in zooplankton community composition was identified between the different seasons. During summer/autumn in the EGAB, zooplankton with opportunistic reproductive strategies were significantly more abundant than during winter/spring. It appears that the elevated chlorophyll a concentrations in the EGAB during the summer/autumn upwelling season underpinned the clear seasonal differences in zooplankton community composition observed in this study.
Keywords: South Australia
Great Australian Bight
Rights: Copyright in the contribution (including illustrations) is held by the Royal Society of SA
DOI: 10.1080/03721426.2009.10887124
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Earth and Environmental Sciences publications

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