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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/767

Title: River flow and fish abundance in a South African estuary
Authors: Whitfield, AK
Harrison, TD
Keywords: Fish catch
Nursury area
River volume
Thukela estuary
Salinity
Issue Date: Jun-2003
Publisher: Blackwell Publishing Ltd
Citation: Whitfield, AK and Harrison, TD. 2003. River flow and fish abundance in a South African estuary. Journal of Fish Biology, vol. 62(6), pp 1467-1472
Abstract: The ichthyofauna of the Thukela Estuary, a small (55 ha), shallow (<1_5 m) system on the KwaZulu-Natal coast (mean annual river runoff of 3865_106m3, from a large catchment of29 000km2, is seasonal: peak inputs occurring between November and March), was dominated by the juveniles of marine taxa that used the estuary as a nursery area. A striking feature of the above community was the decline in fish abundance with increasing river input, with flow values >100m3 s_1 leading to increased loss of species from the system. This decline was linked to the lack of saline intrusion into the estuary and increased freshwater flooding through the system.
Description: Copyright: 2003 Blackwell Publishing Ltd
URI: http://hdl.handle.net/10204/767
ISSN: 0022-1112
Appears in Collections:General science, engineering & technology

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