Show simple item record

dc.contributor.authorMead, A.
dc.contributor.authorCarlton, J.T.
dc.contributor.authorGriffiths, C.L.
dc.contributor.authorRius, M.
dc.date.accessioned2011-12-12T07:05:01Z
dc.date.available2011-12-12T07:05:01Z
dc.date.issued2011-05
dc.identifier.citationMead, A.; Carlton, J.T.; Griffiths, C.L. and Rius, M. (2011) Revealing the scale of marine bioinvasions in developing regions: a South African re-assessment. Biological Invasions, 13(9), 1991-2008en
dc.identifier.urihttp://hdl.handle.net/123456789/1001
dc.description.abstractAs recently as 2009 the number of introductions recorded for South Africa comprised 22 marine and estuarine species. This review aims to reassess the diversity and scale of introduced marine and estuarine species in the region. Accurate taxonomic and systematic work, broad review of historical records and new sampling surveys across selected marine habitats conducted by a team of local and international experts has effectively revealed the presence of previously misidentified, overlooked, or new introductions. A total of 86 introduced and 39 cryptogenic species are recognized, increasing known numbers four and twofold respectively within 1 year, although the current assessment is far from fully comprehensive. Additional species were revealed within the historic literature (76%), from surveys conducted post-2005 (11%) and following taxonomic resolution (13%). Temporal analyses confirmed discovery rates were increasing over time. Ship fouling and ballast water were the dominant vector pathways, accounting for 48 and 38% respectively. Spatial analyses revealed patterns of bioinvasion to be significantly higher on the west coast compared to the other coastal regions. Overall, 53% of introductions were concentrated within harbour areas with only 4 opencoast invaders detected at present. Introduced species found in the cool and warm-temperate provinces of the west and south coast mainly originated from the northern hemisphere (65%). In contrast, introductions located in the sub-tropical and tropical provinces of the east coast mainly originated from the southern hemisphere (18%), with the remaining 17% of introduced species being of unknown origin. The research approach described has proven pivotal, contributing massively toward revealing the true scale and patterns of bioinvasion for a developing region within a relatively short period of time.en
dc.description.sponsorshipCentre of Excellence for Invasion Biologyen
dc.format.extent476390 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherSpringer Science+Business Media B.V.en
dc.subjectBallasten
dc.subjectBioinvasionsen
dc.subjectCryptogenicen
dc.subjectFoulingen
dc.subjectVectorsen
dc.subjectSouth Africaen
dc.titleRevealing the scale of marine bioinvasions in developing regions: a South African re-assessmenten
dc.typeJournalArticlesen
dc.cibjournalBiological Invasionsen
dc.cibprojectNAen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record