14 March 2018

The ecology of driftwood

Logs the size of telephone poles drift along the shore of the Salish Sea. Erik Hammond turns the wheel of his aluminum skiff and closes in. He grabs his ax and towlines, then leaps atop the floating wood, much as his father did, and his father did before him. With the butt of his ax he drives anchor pegs into the choicest three and ties them to the stern... Hammond and Moore are beachcombers, or log salvors, based in Gibsons, British Columbia.. They are practitioners of an occupation once common on the Pacific Northwest coast...

Driftwood makes an enormous if underappreciated contribution to the food web connecting the forests and the sea... Driftwood, it turns out, is also rapidly disappearing...

Immense logjams and floating rafts of naturally occurring wood were once common and well-documented features in rivers and estuaries before they were cleared for navigation. The Great Raft on Louisiana’s Red River, perhaps the most famous, existed for an estimated 375 years before its removal in 1830...

Kramer’s research shows that driftwood serves as building blocks for stable sand dunes and spits in estuaries, providing an important buffer from rising tides and waves. But shorelines around the world—especially in developed, temperate zones—are now severely wood impoverished compared to their condition before human settlement. As rivers lose driftwood, water travels through faster and there is less time for nutrient cycling...
Excerpts from an interesting longread at Hakai Magazine.  The magazine has an abundance of articles on coastal science and societies.

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