Leaves Versus Tides

Salt marshes are the unsung heroes of coastal flood protection. These flat expanses of wild plants grow in muddy channels and creeks, flooded and drained by the tides. Only special types of plants can tolerate this briny environment.

“Just Right” Plant Growth May Make River Deltas Resilient

Geologists suggest that an intermediate amount of vegetation is most effective at stabilizing freshwater river deltas. Vegetation on marsh surfaces in river deltas can slow the flow of water and cause more sediment to be deposited, helping prevent sea-level rise from drowning sensitive marshlands.

Why Restoring Wetlands Is More Critical Than Ever

Along the Delaware River estuary, efforts are underway to restore wetlands lost due to centuries of human activity. With sea levels rising, coastal communities there and and elsewhere in the U.S. and Europe are realizing the value of wetlands as important buffers against flooding and tidal surges.

Marshes of Mesopotamia

Wars in the Persian Gulf region and the deliberate draining of the Mesopotamian marshes, left a vast area of once-teeming river delta a dry, salt-encrusted desert, emptied of insects, birds and the people who lived on them. Now the marshes are under threat again, this time from the building of huge dams in Turkey on the Tigris and Euphrates.