English to French Other Environment & Ecology

The
biochemical recycling of soils move organic matter by diffusing pollutants and
purifying nitrates within disrupted waters.
The river is the keeper of this clockwork of geological time.
Geologists study this maximum turbidity zone, where the finest silts are being mixed
around in the estuaries.
It is here you have very high tidal phenomena, where four
times during the day the velocity of the water is going from zero to a maximum
turbidity, a phenomena fluctuation that is irregular.
At that time, you have
sedimentation within the column of water.