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Desktop provisional eco-classification of the temperate estuaries in South Africa
Expanded Title:Based on the health assessment of the estuaries in South Africa’s Cool- and Warm Temperate regions, the PES showed that overall 20% of the systems are considered to be in Category A, 43% in Category B, 27% in Categories C or D, and 10% in Categories E and F. Estuaries in near natural condition (Categories A or B) are mainly located in the Warm-Temperate region, while systems in the Cool-Temperate region even distributed across Categories B to E. The above analysis (based on the number of estuaries) was biased towards the state of the large number of small temporarily open/close estuaries occurring along this stretch of the South African coast. However, analysing results on “estuarine area” (rather than the number of estuaries), most of the estuarine habitat in the Temperate region (67%) is in a C or D Category with only about 2% remaining in a near pristine state (Category A), the latter mainly located in the Warm-Temperate region. The Cool-Temperate region was found to support estuarine habitat mainly in the C and D categories reflecting the large number of degraded and small temporarily open/close systems near coastal urban centres (e.g. Cape Town). In contrast, the Warm-Temperate region was characterised by estuarine habitat in Categories B and C, possibly due to the undeveloped nature of large parts of this region. However, there is a risk of further deterioration if key recommended mitigation measures are delayed or ignored
Date Published:01/04/2015
Document Type:Research Report
Document Keywords:Policy and regulation, Water Quality
Document Format:Report
Document File Type:pdf
Research Report Type:Standard
WRC Report No:2187/1/15
ISBN No:978-1-4312-0674-2
Authors:van Niekerk L; Taljaard S; Adams JB; Fundisi D; Huizinga P; Lamberth SJ; Mallory S; Snow GC; Turpie JK; Whitfield AK; Wooldridge TH
Project No:K5/2187
Originator:WRC
Organizations:CSIR Natural Resources and the Environment Stellenbosch
Document Size:3 327 KB
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