Search
Now showing items 1-6 of 6
Acute and chronic effects of acidic pH on four subtropical frog species
(Water Research Commission, 2016)
Acidic precipitation is implicated as a possible cause of global amphibian decline. Even protected areas such as Kruger National Park receive acid rain which may lead to possible negative effects on the park’s natural ...
Metal enrichment and contamination in a karst cave associated with anthropogenic activities in the Witwatersrand Basin, South Africa
(Springer, 2016)
The Wonderfontein Spruit has been severely polluted as a result of anthropogenic activities (i.e. mining and industry) in the Witwatersrand Basin (South Africa). Although the extent of metal pollution within this surface ...
Bioaccumulation and human health risk assessment of DDT and other organochlorine pesticides in an apex aquatic predator from a premier conservation area
(Elsevier, 2016)
With the second highest gross domestic product in Africa, South Africa is known to have a high pesticide usage, including the highly persistent and banned group of organochlorine pesticides (OCPs). South Africa is also one ...
Metal concentrations in Hydrocynus vittatus (Castelnau 1861) populations from a premier conservation area: relationships with environmental concentrations
(Elsevier, 2016)
Metals are known to have deleterious effects on aquatic ecosystems, so monitoring the bioaccumulation of these pollutants is important for the assessment of potential impacts. The aim of the study was therefore to determine ...
Influence of mining pollution on metal bioaccumulation and biomarker responses in cave dwelling fish, Clarias gariepinus
(Springer, 2016)
Cave ecosystems remain largely unstudied and risk being severely degraded as a result of anthropogenic activities. The Wonderfontein Cave, situated in the extensive gold mining region of the Witwatersrand Basin, is one ...
Adsorption, uptake and distribution of gold nanoparticles in Daphnia magna following long term exposure
(Elsevier, 2016)
Gold nanoparticles (nAu) have recently been studied and developed within the biological and photothermal therapeutic contexts. The major clinical interest is within the application of novel drug delivery systems. Environmental ...