By September, surveys showed survival rates of only 22% for Coulter pines, 18% for Big Cone Douglas firs and 40% for Ponderosa pines, officials said.
This year, the agency has planted 155,000 seedlings — all from seeds collected exclusively from trees that evolved in the Angeles National Forest.
Most of the seedlings planted below an elevation of about 4,000 feet died. Survival rates were highest for seedlings planted a few yards apart in the high country.
convenient that they used funds from Chevron