NRF IR Repository

Lake St Lucia, Africa’s largest estuarine lake in crisis: combined effects of mouth closure, low levels and hypersalinity

Show simple item record

dc.contributor.author Cyrus, Digby
dc.contributor.author Jerling, Hendrik
dc.contributor.author MacKay, Fiona
dc.contributor.author Vivier, Leon
dc.date.accessioned 2017-08-24T07:50:17Z
dc.date.available 2017-08-24T07:50:17Z
dc.date.created 2017-08
dc.date.issued 2011
dc.identifier.citation Cyrus, D. et al. 2011 ' Lake St Lucia, Africa’s largest estuarine lake in crisis: Combined effects of mouth closure, low levels and hypersalinity.S Afr J Sci. 2011;107(3/4),Art. #291, pp.13,DOI: 10.4102/sajs.v107i3/4.291 en_US
dc.identifier.uri http://hdl.handle.net/10907/1441
dc.description.abstract The Lake St Lucia estuarine system is the most important nursery ground for juvenile marine fish and prawns along the KwaZulu-Natal coast. The estuary mouth closed in June 2002 because of drought and remained so for 4 years and 9 months. A study to determine the impacts of extended mouth closure, hypersalinity and low lake levels on the mesozooplankton, macrobenthic invertebrates and fish fauna was initiated in 2004. Zooplankton and benthic invertebrate diversity declined, benthic invertebrate community composition changed and the diversity and abundance of fish decreased between 2004 and 2007. In the case of fish, the declines were related to die-offs in the lake and the failed recruitment of post-larvae and juveniles from the marine environment as a result of the mouth having been closed. Options for management intervention under closed-mouth conditions are limited at this time, particularly in the short term, to breaching the mouth and facilitating the inflow of sea water. In the medium term, as was the historical situation, the reconnection of the Mfolozi system to St Lucia should be viewed as a major priority. en_US
dc.description.sponsorship University of Zululand en_US
dc.description.sponsorship South African National Research Foundation (NRF) en_US
dc.description.sponsorship Oceanographic Research Institute en_US
dc.format.extent 13 p. en_US
dc.format.medium PDF en_US
dc.language.iso en en_US
dc.publisher South African Journal of Science en_US
dc.relation.requires Adobe acrobat reader en_US
dc.title Lake St Lucia, Africa’s largest estuarine lake in crisis: combined effects of mouth closure, low levels and hypersalinity en_US
dc.type Article en_US
dc.rights.holder National Research Foundation en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record