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The Holocene evolution of Lake St Lucia, Africa's largest estuary: Geological implications for contemporary management by A.N. Green; M.S. Humphries; J.A.G. Cooper; K.L. Strachan; M. Gomes; N.N. Dladla is a Earth and Planetary Sciences article available to read on EtoBox.

What is The Holocene evolution of Lake St Lucia, Africa's largest estuary: Geological implications for contemporary management about?

The Holocene evolution of one of Africa's largest estuaries, Lake St Lucia on the east coast of South Africa, is examined and juxtaposed with previous and contemporary management practices aimed at fixing the estuary state at a single point along the system's overall evolutionary pathway. The estuary has been heavily altered over the course of the last century, mostly through mouth management activities aimed at maintaining a direct connection with the ocean. Based on a high-resolution seismic reflection dataset, LiDAR and bathymetry data of the lake system, together with palaeontological (foraminifera and diatoms) and sulfur isotope geochemical data from three long (14-16 m) piston cores, we investigate the system-wide and coeval evolution of the three different sub-basins (False Bay, North Lake and South Lake) that comprise the current estuarine lake system. The northern and southern sections of the system evolved independently of each other since the Last Glacial Maximum, with each area responding differently to early sea-level forcings. In North Lake, the lagoon evolved from fully estuarine (8300 cal. BP) to a restricted lagoon with occasional marine incursions, steadily decrea

Who reads The Holocene evolution of Lake St Lucia, Africa's largest estuary: Geological implications for contemporary management?

Author

A.N. Green; M.S. Humphries; J.A.G. Cooper; K.L. Strachan; M. Gomes; N.N. Dladla

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)