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Seasonal changes in the Sargassum populations on a fringing coral reef, Magnetic Island, Great Barrier Reef region, Australia

Vuki, Veikila C. and Price, I.R. (1994) Seasonal changes in the Sargassum populations on a fringing coral reef, Magnetic Island, Great Barrier Reef region, Australia. Aquatic Botany, 48 . pp. 153-166. ISSN 0304-3770

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Abstract

Sargassum populations are one of the most conspicuous features of both the reef flats and the reef slopes of fringing coral reefs in the Great Barrier Reef region, in terms of their widespread occurrence and often high standing crop. Although an important element of the benthic community on inshore reefs, Sargassum spp. are generally absent from mid- and outer shelf reefs in the region. In this study, the temporal and spatial distribution patterns of the Sargassum populations on a fringing reef flat in Geoffrey Bay (Magnetic Island) were investigated quantitatively. Data on biomass, cover, density, mean thallus length and reproductive condition were collected at three sites on the reef flat over a 13 month period from March 1986 to March 1987. The Sargassum populations in Geoffrey Bay showed marked seasonal changes in growth and development. They exist as dense stands of large thalli in the warmer months, but persist largely as basal parts only (including the holdfasts with short primary axes) in the cooler months. The observed seasonality is discussed with reference to possible causal factors.

Item Type: Journal Article
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
Q Science > Q Science (General)
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Marine Studies
Depositing User: Generic Account
Date Deposited: 26 Aug 2013 17:21
Last Modified: 26 Aug 2013 17:21
URI: http://repository.usp.ac.fj/id/eprint/6212
UNSPECIFIED

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