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Number of volunteer hours dedicated towards managing, monitoring, and conserving San Francisco’s biodiversity.
Number of square feet of the worst invasive species removed from natural areas.
Number of surviving indigenous native plant species planted in developed parks, private landscapes and natural areas.
Abundance and species diversity of birds, as indicated by the Golden Gate Audubon Society’s Christmas bird counts.

An upward-pointing arrow indicates that the measurement should rise if the City is moving in the right direction; a downward-pointing arrow indicates that the measurement should fall. These indicators, sampled on a regular basis, will give a bird’s-eye view of whether San Francisco is moving toward or away from a sustainable future. Of course, none of the topics are completely covered by the few listed indicators, and there are certainly infinitely more things that could be tracked. These ongoing measures are meant to give an overall indication of whether the City is moving in the right direction, and provide a way of measuring significant trends without entailing major new expense for data-collection. Baselines for these indicators have yet to be researched.