Marine alien species of South Africa – status and impacts


Robinson, T.B., Griffiths, C.L., McQuaid, C.D. and Rius, M. (2005) Marine alien species of South Africa – status and impacts African Journal of Marine Science, 27, (1), pp. 297-306. (doi:10.2989/18142320509504088).

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Description/Abstract

The current status of marine alien species along the South African coast is reviewed and the ecological and economic impacts of these invasions are discussed. In all, 10 confirmed extant alien and 22 cryptogenic species are recorded from the region. All 10 alien species support well-established populations and the majority of these remain restricted in distribution to sheltered bays, estuaries and harbours. Only one species, the Mediterranean mussel Mytilus galloprovincialis, has spread extensively along the coast and caused significant ecological impacts. These include the competitive displacement of indigenous species and a dramatic increase in intertidal mussel biomass. These changes have also increased available habitat for many infaunal species and resulted in enhanced food supply for intertidal predators. Considerable economic benefits have also resulted from this invasion because M. galloprovincialis forms the basis of the South African mussel culture industry.

Item Type: Article
Digital Object Identifier (DOI): doi:10.2989/18142320509504088
ISSNs: 1814-232X (print)
Keywords: CARCINUS MAENAS, CRASSOSTREA GIGAS, MARINE ALIEN SPECIES, MYTILUS GALLOPROVINCIALIS
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QH Natural history > QH301 Biology
Organisations: Ocean Biochemistry & Ecosystems
ePrint ID: 355042
Date :
Date Event
2005Published
Date Deposited: 25 Jul 2013 15:29
Last Modified: 21 Feb 2017 06:47
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/355042

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