How does Louisiana fight erosion through used Christmas Trees?

Answer 1

In January, volunteers throw used Christmas trees into wooden structures called cribs. These cribs extend across lakes where soil erosion has occurred or can occur. Instead of water waves reaching coasts or beaches where erosion can occur, the cribs with trees receive the force. Plus, the tree branches catch sediments, which builds a soil wall that also diffuses the force.

Louisiana has shown losses of over 25 acres without intervention. With Christmas tree cribs, they only had about 3 and 1/2 acres lost where there was a long tree crib in use.

Note: As seen on NBC Nightly News, Jan. 27, 2018.

Answer 2

And to add to what my colleague said, you can see this for yourself in a segment of the BBC America series Planet Earth: Blue Planet II. The episode containing this segment is called "One Ocean," and if it's not on YouTube, it might be on the BBC America website.