Damage of the sediments

In the recent past, there has been encroachment on the site by people, a factor that has depleted vegetation cover in and around the site, hence threatening the fossil resources. Extraction of forest products, overgrazing and cultivation has contributed to damage of the sediments. Most of the fossils have been exposed, eroded and vandalized.

16p guestgreat 16-05-2019 25 0   Download

Soil erosion is a hazard traditionally associated with agriculture in tropical and semi-arid areas and is important for its long-term effects on soil productivity and sustainable agriculture. It is, however, a problem of wider significance occurring additionally on land devoted to forestry, transport and recreation. Erosion also leads to environmental damage through sedimentation, pollution and increased flooding. The costs associated with the movement and deposition of sediment in the landscape frequently outweigh those arising from the long-term loss of soil in eroding fields.

316p coeus75 29-01-2013 50 11   Download

Two samples were also analysed for polychlorinated dioxins and furans (PCDD/Fs), a class of chemical that can be formed during the combustion of materials present in e-waste. Soil from an open burning site was moderately contaminated, while sediment from the Agbogbloshie lagoon contained a very high level of these highly toxic, highly persistent and bioaccumulative chemicals, at a level just below the threshold defined as being indicative of serious contamination for sediments in the Netherlands.

8p cao_can 02-01-2013 50 3   Download