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Metallothionein induction as indicator of low level metal exposure to aquatic macroinvertebrates from a relatively unimpacted river system in South Africa
(Springer, 2017)
The Marico River is relatively unaffected by anthropogenic activities. However, metal concentrations—mainly from natural sources—occasionally exceed environmental quality guidelines. Macroinvertebrates are capable to react ...
The use of feathers in monitoring bioaccumulation of metals and metalloids in the South African endangered African grass-owl (Tyto capensis)
(Springer Link, 2013)
Few studies have quantified metals in South
African species and no published data on residues specifically
in South African owl feathers exist. Tyto capensis is
listed as vulnerable within South Africa, making it ...
An assessment of mercury contamination and the relationship between environmental variables and mercury concentrations in a seasonal wetland
(Springer Verlag, 2013)
A study was undertaken to assess the extent
of mercury contamination in the water and sediment in
a seasonal wetland, as well as to determine the relationship
between environmental parameters and the
distribution of ...
An evaluation of the weight of evidence approach to assess sediment quality in the Mvoti Estuary, KwaZulu-Natal, South Africa
(Natl Inquiry Services Centre Pty Ltd, 2015)
A weight of evidence approach was evaluated in the Mvoti Estuary, which is affected by point and non-point sources
of contaminants. Four sites were sampled in 2005 and assessed along the standard sediment quality triad ...
The case for environmental flow determination for the Phongolo River, South Africa
(Natl Inquiry Services Centre Pty Ltd, 2015)
The construction of Pongolapoort Dam in 1973 on the Phongolo River in KwaZulu-Natal, South Africa, has
considerably altered the hydrological behaviour and ecological response of the downstream floodplain. Changes in
the ...
Human health risk from consumption of marine fish contaminated with DDT and its metabolites in Maputo Bay, Mozambique
(Springer, 2018)
Many countries with incidence of malaria, including those surrounding Maputo Bay, use dichloro-diphenyl-trichloroethane (DDT) to reduce mosquitoes. This study is the first to estimate the human health risk associated with ...
Irrigation water quality and the threat it poses to crop production: evaluating the status of the Crocodile (West) and Marico catchments, South Africa
(Springer, 2018)
Ensuring food security is becoming increasingly difficult due to limited freshwater resources. Low-quality irrigation water also poses a severe threat to crop yield and quality. The aim of this study was to evaluate the ...
Seasonal Bioaccumulation of Organohalogens in tigerfish, Hydrocynus vittatus Castelnau, from Lake Pongolapoort, South Africa
(Springer, 2012)
The study determined current exposure of tigerfish in Lake Pongolaqpoort to organohalogens. Levels of DDT, PCB, HCB, HCH, PBDE and CHLs were measured in tigerfish muscle on a seasonal basis. Historical use of DDT was ...
Fish and macroinvertebrate community composition of a floodplain wetland associated with the Harts River, South Africa, in relation to water quality and habitat parameters
(Natl Inquiry Services Centre Pty Ltd, 2015)
The Harts River and its associated floodplain, Northern Cape province, South Africa, are closely associated with
the Vaalharts Irrigation Scheme. This floodplain has been poorly studied in the past, with no published ...
A histology-based fish health assessment of the tigerfish, Hydrocynus vittatus from a DDT-affected area
(Elsevier, 2011)
The Pongolapoort Dam (PPD) in the Phongola River, Kwa-Zulu Natal, South Africa and the surrounding area are classified as intermediate to low risk malaria areas and are continually being treated with DDT for malaria vector ...