Pollutions

5 results

Refine your search

5 results

The Challenges of the Sub-Saharan Urban Explosion

Sub-Saharan African cities are presently growing at a size and speed unprecedented in human history. This region of the continent, which was always very rural up to now, is becoming predominantly urban. Small, medium-sized and large cities are doubling in size year on year, with some growing by 1...

The effects of gold mining in rivers in French Guiana

A study conducted in the French Guiana basin where artisanal gold mining in occurs has shown there is mercury in the environment from these activities. It is even found in the piscivorous fish and indigenous communities that eat food from the rivers affected. These are important and innovative...
barge-d-orpaillage-sur-le-maroni

The Maroni River threatened by gold mines

How have the environmental changes that have occurred in recent decades in French Guiana, including gold extraction in the hinterland, affected the Maroni River? A team involving IRD researchers analysed changes in sediment flows in this water course since 2000. Their findings are alarming.
pollution-par-les-plastiques

Plastic in the Saigon River

While the plastic pollution of the oceans is widely covered in the media, freshwater pollution has a lower profile. For the first time, a recent study highlights the high level of micro and macro-plastic pollution of a tropical river running through a developing megalopolis.
dechets-plastiques

Variability and convergence at the heart of the oceans

While gigantic eddies trap floating particles at the heart of each ocean basin in subtropical regions, other currents link the Southern Indian Ocean to the South Pacific. Stable connection over 8,000 km!