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First Wednesday: Man vs. Nature | December 7th, 7pm

How People Impacted the Natural Landscape

If you’ve hiked in San Francisco, you may have enjoyed the dense forests of the Presidio, Mt. Sutro Open Space Reserve, or Mt. Davidson, or relaxed along the plentiful lakes found throughout Golden Gate Park. You may not have realized much of what you are seeing is non-native — or even man-made.

Ever since the Spanish arrived in Yerba Buena in the late 1700s, the area has undergone a transformation from its native sand dunes, coastal scrub, grasslands, oak woodlands, and lakes and creeks. Today, it is thought that 40 percent of the flora in San Francisco are non-native.

Alexandra Kenin will discuss some of the major changes to San Francisco’s natural areas and who drove these changes, including the US Army, John McLaren, and Adolph Sutro. She will discuss some success stories of habitat restoration, and a few places where you can still see San Francisco’s landscape in its original state. Kenin is the founder of Urban Hiker SF and author of the new book Urban Trails – San Francisco: Coastal Bluffs, The Presidio, Hilltop Parks & Stairways.

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