Butterfly Haven Threatened by Campus Green Energy Project

A small patch of land along Strawberry Creek on the University of California, Berkeley campus, serves as a critical habitat for the native California pipevine swallowtail butterfly. This site is the sole nursery and food source for the distinctive blue and black butterflies and their caterpillars, as females lay eggs exclusively on the California pipevine plant.

However, this delicate ecosystem is now facing disruption from a new clean energy initiative. UC Berkeley is constructing a modern, all-electric renewable energy system to replace its aging natural gas cogeneration plant, which is a major source of campus carbon emissions. The project necessitates excavation in the butterfly habitat to access essential utility lines.

University spokesperson Kyle Gibson acknowledged the unavoidable disturbance, stating that efforts will be made to minimize impact. He noted that neither the host plants nor the butterflies are legally protected. The university has developed a four-part strategy including limiting excavation, transplanting established pipevines to alternative locations along Strawberry Creek, and future restoration of the habitat.

Despite the university's plan, conservationists like Rosetta Wang, founder of the Wild Harvest and Restoration Fund, and butterfly expert Mia Monroe, express significant concerns. They question the viability of transplanting mature, deep-rooted pipevine plants, especially regarding proper timing during dormancy in late fall or winter. Wang specifically called for additional surveys before any ground disturbance to ensure the habitat's ultimate preservation and survival.