The Southern Ocean Group at Rhodes University: seventeen years of biological oceanography in the Southern Ocean reviewed

McQuaid, C.D. and Froneman, P.W. (2004) The Southern Ocean Group at Rhodes University: seventeen years of biological oceanography in the Southern Ocean reviewed. South African Journal of Science, 100 (11 & 12). pp. 571-577. ISSN 0038-2353

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Abstract

This paper reviews the main findings of the Southern Ocean Group at Rhodes University over the last 17 years. A primary contribution has been the development of conceptual models of the physical-biological driving mechanisms that support enormous seasonal populations of land-based top predators at the Prince Edward Islands. Collectively, these models are referred to as the life-support system of the islands. Near-shore subcomponents of the ecosystem, including inshore feeding predators, are largely supported by autochthonous primary production of kelps and localized diatom blooms. These energy sources feed indirectly into top predator populations via the benthic communities. A crucial link is formed by the bottom-dwelling shrimp, Nauticaris marionis, which feeds largely on benthic species and detritus and is eaten by a number of diving seabirds. The frontal systems that lie north and south of the islands are important feeding grounds for offshore feeding birds. A decadal-scale southward shift in the position of the Sub-antarctic Front towards the islands is reflected in increases in populations of these species.

Item Type:Article
Additional Information:Rhodes Centenary issue
Uncontrolled Keywords:Southern Ocean Group, Rhodes University, Prince Edward islands, benthic communities, seabirds, biological oceanography
Subjects:Y Unknown > Subjects to be assigned
Divisions:Research Institutes and Units > Southern Ocean Group
Faculty > Faculty of Science > Zoology & Entomology
ID Code:112
Deposited By: Rhodes Library Archive Administrator
Deposited On:08 Aug 2005
Last Modified:06 Jan 2012 16:17
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