Eutrophication results from combinations of increased nutrient and sediment discharges with runoff.
Soil erosion and surface runoff are major nutrient and sediment sources in rural areas, while stormwater runoff and sewage discharges are major contributors from urban areas. Petroleum hydrocarbons, heavy metals and agrichemicals were also identified as potential concerns in both urban and rural areas. Monitoring water quality in urban environments Expertise AGSO has for many years provided marine geoscience expertise in support of exploration for offshore nonrenewable resources and the maintenance and sustainability of renewable environmental resources. Catchment erosion and sediment delivery, sediment tracing techniques, sedimentology and agriehemieals, environmental reconstruction and climate change. Applied sedimentology and modern depositional processes, seafloor mapping and substrate identification, in-situ acquisition of environmental data.