Tag Archives: Arthur Shapiro

Refuting Jake Sigg: No, 90% of Insects Do Not Eat Only Native Plants

Jake Sigg, considered the doyen of San Francisco’s native plant activists, has an influential newsletter. Recently, it said: “Did you know that 90 percent of insects can only eat the native plant species with which they’ve co-evolved?” It included a … Continue reading

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The Logic of Ecological Change – Prof Art Shapiro

Recently, UC Davis Professor Art Shapiro gave a talk at the Commonwealth Club.  It was a tour-de-force. He described it as a very quick resume of a course he’s been teaching for 40 years at UC Davis. The takeaway: The … Continue reading

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What is Biodiversity?

There’s been a lot of talk of ‘biodiversity’ in San Francisco recently. The city’s ‘Recreation and Open Space Element’ (ROSE) mentions it without clearly defining it. The Natural Areas Program claims to preserve it. There’s a new position, the Director … Continue reading

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