Details

Autor(en) / Beteiligte

• Seanego, KG
• Pitcher, GC
• Probyn, TA
• Du Randt, R.
• Mansfield, LM

Titel

Water quality characteristics of Vanderkloof Dam and its potential for rainbow trout farming

Ist Teil von

• Water S. A., 2023-04, Vol.49 (2), p.136-154

Ort / Verlag

Gezina: Water Research Commission (WRC)

Erscheinungsjahr

2023

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Vanderkloof Dam was periodically sampled between November 2014 and April 2016 for a range of water quality parameters to assess the potential for cage culture of rainbow trout, Oncorhyncus mykiss. The dam is strongly stratified in summer and autumn, although upper water column temperatures remain relatively cool, largely 9.5 could exacerbate these physiological challenges. Hydrological conditions for sfih farming are most suitable in the proximity of the dam wall as opposed to further upstream. Here the hypoxic conditions that develop in the thermocline/hypolimnion during summer and autumn are less pronounced, particularly towards the southern bank, where concentrations of total suspended solids are generally <10 mg·L−1 and water clarity is more favourable for visual feeders such as sfih. Although rainbow trout may survive the adverse conditions prevalent during the summer, growth is likely to be compromised and susceptibility to disease may increase.