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Marine alien species of South Africa – status and impacts

Marine alien species of South Africa – status and impacts
Marine alien species of South Africa – status and impacts
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.
CARCINUS MAENAS, CRASSOSTREA GIGAS, MARINE ALIEN SPECIES, MYTILUS GALLOPROVINCIALIS
1814-232X
297-306
Robinson, T.B.
f0ad6e2c-1926-48c4-b134-b2bc43d5d5bc
Griffiths, C.L.
1c8ef50c-2626-4b8d-a24e-c93b902145dc
McQuaid, C.D.
23e07469-fd84-40fd-8d2b-fce56c83cf08
Rius, M.
c4e88345-4b4e-4428-b4b2-37229155f68d
Robinson, T.B.
f0ad6e2c-1926-48c4-b134-b2bc43d5d5bc
Griffiths, C.L.
1c8ef50c-2626-4b8d-a24e-c93b902145dc
McQuaid, C.D.
23e07469-fd84-40fd-8d2b-fce56c83cf08
Rius, M.
c4e88345-4b4e-4428-b4b2-37229155f68d

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).

Record type: Article

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.

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More information

Published date: 2005
Keywords: CARCINUS MAENAS, CRASSOSTREA GIGAS, MARINE ALIEN SPECIES, MYTILUS GALLOPROVINCIALIS
Organisations: Ocean Biochemistry & Ecosystems

Identifiers

Local EPrints ID: 355042
URI: http://eprints.soton.ac.uk/id/eprint/355042
ISSN: 1814-232X
PURE UUID: e203f2c1-7b63-40f2-b242-144971d7e323

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Date deposited: 25 Jul 2013 15:29
Last modified: 18 Jul 2017 03:50

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Contributors

Author: T.B. Robinson
Author: C.L. Griffiths
Author: C.D. McQuaid
Author: M. Rius

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