Purpose of Study
A recent drought in California resulted in millions of dead trees in low to mid-elevation areas of the Sierra Nevada. While relatively few giant sequoias died during the drought, scientists observed die-back of giant sequoia foliage in some areas. This study is investigating how water stress affects giant sequoia tree health.
Scientists have surveyed over 4000 trees for foliage die-back and are studying the health of up to 60 trees in detail -- at both high and low foliage die-back sites. This information will be linked with other field and remotely sensed data (collected via airplane) for use in landscape-scale assessments and planning.