An estimated 50 to 75 people took part in a protest Saturday at a eucalyptus grove on the UC Berkeley campus, many of them stripping naked in doing so, to make clear their opposition to a proposed FEMA-funded tree-clearing program in the East Bay hills.

The event was orchestrated by the Tree Spirit Project, whose mission is “to raise awareness of the critical role trees play in our lives, both globally and personally.” Jack Gescheidt, the West Marin resident who founded the project, does this partly by taking fine-art photographs of people, often naked, communing with trees and nature.

The Federal Emergency Management Agency in March allocated $5.7 million to the California Office of Emergency Services to remove eucalyptus trees as part of fire hazard abatement in several parts of the hills — including Claremont Canyon and other areas near the scene of the devastating 1991 wildfire that killed 25 people and destroyed more than 3,000 homes. The funds will be distributed to UC Berkeley, the city of Oakland, and the East Bay Regional Parks District.

The Tree Spirit Project has joined other campaigners who oppose what they say is unnecessary and harmful “clear-cutting.” The Hills Conservation Network group is suing FEMA in federal court. It says the clearing of trees will increase rather than decrease fire danger by turning fire-resistant living trees into dead wood left onsite. It is also protesting the potential use of the herbicide glyphosate, commercially known as Round Up, on the remaining tree stumps after the clearing.

However, another group of hills residents opposes the FEMA decision for the opposite reason: they say the fire mitigation plan doesn’t go far enough. The Claremont Canyon Conservancy supports complete eradication. Jon Kaufman, stewardship coordinator of the 500-strong group, said earlier this year: “The problem today is eucalyptuses crowd out native trees, leaving a dense eucalyptus forest with oaks and bays underneath, starved for sunlight.”