“We’re just trying to get the park to test the trees," says Dale Williams.

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Rogue docent theory on Torrey pines die-off

Aluminum, not bark beetles, to blame for decimation of rare trees

Two years ago, Dale Williams, a volunteer docent at Torrey Pines Natural Reserve, started wondering what is killing the rare trees. Williams says about 25 percent of the reserve’s trees, which numbered about 6000, have ...

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