News From the Field
Increased UV from ozone depletion sterilizes trees
February 7, 2018
This material is available primarily for archival purposes. Telephone numbers or other contact information may be out of date; please see current contact information at media contacts.University of California, Berkeley, paleobotanists put dwarf, bonsai pine trees in growth chambers and subjected them to up to 13 times the UV-B radiation Earth experiences today, simulating conditions that likely existed 252 million years ago during the planet's worst mass extinction. The UV-B made the pines temporarily sterile and created malformed pollen, evidence that ozone depletion from volcanic eruptions could have led to high UV-B levels that contributed to the end-Permian crisis.Full Story
University of California, Berkeley
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