the.com/estuary
where rivers lose their freshwater identity in a slow, salty negotiation with the sea
means the tidal mouth of a river where it widens and meets the sea, mixing fresh and salt water
from From Latin aestuarium, 'a tidal inlet or marsh,' rooted in aestus, meaning 'tide,' 'surge,' or 'boiling heat' — the same word that gives us the seething, simmering sense of water in restless motion. The Romans heard in it the churn of tides advancing and retreating, and English borrowed it whole in the 1530s for exactly that restless meeting place.
- nurseries
- Most ocean fish spend childhood in estuaries
- brackish
- Neither fresh nor salt, but messy in-between
- productivity
- More fertile per acre than rainforests
- tidal mixing
- Salt wedges slide beneath lighter freshwater layers
- carbon sink
- Mudflats bury carbon faster than forests do
thames estuary — river mouth near london where thames meets north sea, historically major trading hub for england
amazon estuary — massive mouth of amazon river in brazil, discharges 209,000 cubic meters of water per second into atlantic
ganges brahmaputra estuary — sundarbans region in bangladesh, world's largest mangrove forest covering 10,000 square kilometers
rio de la plata — estuary between argentina and uruguay, 190 kilometers wide at mouth, ports of buenos aires and montevideo