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Tree Kill Areas at Mammoth Mountain
Photos of tree kill areas at Mammoth Mountain, CA (© Bruno D.V. Marino). Tree death in the area was sudden, appearing in 1990 following volcanic unrest at Mammoth Mountain observed in 1989 and occupies and area of approximately 500,000 m2 (McGee & Gerlach 1998). The unusual form of tree death likely results from very high soil CO2 concentrations reaching > 30% compared to normal soil CO2 concentrations of ~ 0.1 to 1.5% (Farrar et al., 1995). The soil CO2 gas is cool, appears to be devoid of other magmatic gases, and diffuses to the surface through the soil from underground magmatic chambers. Climatic and other non-soil CO2 conditions do not appear to be strongly related to tree death (Farrar et al., 1995). Root death and subsequent senescence of above ground tree structure may be caused by a number of factors including oxygen deprivation, inhibition of root respiration, drought and soil acidification (McGee and Gerlach 1998).
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PEM in ActionPhotos of PEMs Soda Springs, Idaho, field site activities (Sept. 29 to Oct 11) are available here. Soda Springs is known for its extensive natural CO2 vents and interactions with ground and surface waters providing an analog for GCS leakage studies.view photo gallery Photos of field site activities at Mammoth, Mountain, CA, from September 22 to October 5, 2011 are available here. The Mammoth Mountain area is well known for natural CO2 vents and associated tree kill offering a unique analog site to GCS leakage and ecosystem interactions. The field site and field work were directed by Jennifer Lewicki, Lawrence Berkeley Laboratory. view photo gallery Photos of tree kill areas at Mammoth Mountain, CA (© Bruno D.V. Marino). Tree death in the area was sudden, appearing in 1990 following volcanic unrest at Mammoth Mountain observed in 1989 and occupied and area of approximately 500,000 square meters.
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