Everyone should know about the large number of tree removals and massive defoliation happening in some of our major San Francisco parks, including McLaren Park, Mount Davidson, Glen Canyon among others. Do we want this massive intervention, intended to return these parks to dune grasses and scrubland, or do we want a different intervention based on a resiliency paradigm which preserves the wildlife habitat that has evolved over the last 150 years and supports most of our wildlife. Ecologists have discovered that the “go back to dates” chosen by “restorationists” are really only moments between two human altered landscapes. They are entirely arbitrary.
“Learn to love the inevitable changes, is really how I feel”, says Emma Marris. “If the choice is to fight for a [pristine past environment] and lose, or to work with nature as it changes and adapts to what we humans have done to planet Earth, respecting its dynamism and resilience as it shifts to new states, I vote for the latter.” And so do most park visitors in San Francisco.
In addition, Emma states that when anything is too biodiverse — one of everything — it is more like a zoo than nature. We need to leave areas alone and let them sort themselves out. Practitioners (those doing “restorations”) really need to read her book: The Rambunctious Garden: Saving Nature in a Post-Wild World.”