Exploring Nature in the San Francisco Bay Area

Grassland Heritage

When Spanish explorers first saw the San Francisco Bay in 1769, they found a land cloaked largely in perennial grasses. But the extirpation of the native elk herds that grazed the land, the introduction of cattle, and the incursion of European annual grasses abruptly and dramatically transformed the landscape into the familiar green hillside carpets that turn into brown thickets in summer. Today's grasslands, altered as they are, still produce some beautiful wildflowers, lots of wildlife, and if we look closely, remnants of the native bunchgrasses of yore, which can be enhanced with careful management. The parks of the East Bay hills are a good place to start looking for that mix of the grasslands of yesterday and today.

Where the Elk and the Antelope Played

A million years ago, in a climate much like ours today, the land around an ancestral bay teemed with large animals: mammoths and saber-tooth cats; bears, horses, and peccaries. By 300 years ago, the mammoths were gone, but grizzlies, elk, condor, and pronghorn were abundant.European settlers wiped out many of those animals, but programs to reintroduce some of them are now under way. Which raises the question: What should a healthy, native megafauna look like now?

The Essential Tree

It's almost impossible to imagine the California landscape without oak woodlands. But this most familiar and prolific habitat faces a number of serious threats, including unchecked suburban development and Sudden Oak Death. Fortunately, many parks in the Bay Area, including those of the East Bay Regional Parks, offer welcome refuge for a variety of oak woodlands.

Toward A Healthy Bay

In the 40 years since the movement to save San Francisco Bay began, we have moved from desperately fending off more bay fill projects to proactively restoring thousands of acres of shoreline wetlands. Yet how healthy is the Bay that we are saving? What are the factors that affect the health of the Bay and what are we doing about them?

Book Review: Before California

by Brian Fagan, Rowman & Littlefield Publishers, 2003, 288 pages, $24.95 (www.altamirapress.com).   In this new book archaeologist Brian Fagan succeeds in compiling various ele-ments of the history of California before European settlement, including archaeological discoveries, ecological changes, and anthropologic … Read more