New guide to managing valuable resource

Abstract

ECOSYSTEMS There are more than 250 estuaries in South Africa, many of which are considered unique in terms of their physical characteristics and biodiversity. These estuaries perform several important ecological and economic functions, not the least of which is their aesthetic and recreational value. Among others they provide important nursery areas for many marine species thus making a significant contribution to inshore fisheries. They are also crucial conduits for the transportation of sediments and nutrients into the marine zone, where they contribute to marine ecosystem productivity. In addition, estuaries help to protect and control storm and flood damage. However, despite existing laws that govern activities in and around estuaries, the overall protection of these valuable assets remains low. In fact, a recently published assessment of South Africa’s national biodiversity shows that only 28% of the country’s estuaries are considered to still be in an excellent condition (i.e. near pristine).

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