Example of a California Vernal Pool


(photo caption: California's vernal pools may not look like much, but don't let these humble puddles fool you. They harbor unique plants and animals that have adapted ingeniously to the annual deconstruction of their habitats.)





THE SECRET LIFE OF VERNAL POOLS

By Joann C . Gutin

"Oh, no," I thought, as I pulled into the parking area at The Nature Conservancy's Jepson Prairie. Preserve. "This is a vernal pool?" Throughout the drive from Berkeley to California's Central Valley I'd been repeating the musical words: "vernal pool, vernal pool, vernal pool." Though I'd never seen one, the name evoked something small and green, nestled in a mossy hollow, far from the madding crowd. But in the parking area, reality intruded. Olcott Lake, the biggest of the pools on the 1,600-acre preserve, looked more like a huge puddle of milky coffee than an emerald jewel. On this wet spring day it measured a quarter-mile wide by a half-mile long, and maybe two feet deep. And the maddening crowd was uncomfortably close: big-bellied C-141s took off from and landed at a nearby air force base, and a stream of 18-wheelers roared down an adjacent road. I could barely suppress the heretical thought that Jepson Preserve was just--well--some puddles in a pasture. Later, when I confessed my reaction to Oren Pollak, a Nature Conservancy biologist, he chuckled indulgently. "You have to get up close to the pools to understand them," he said. "But I guarantee that to know this place is to love it."

Source: Nature Conservancy July/August 1993. "The Secret Life of Vernal Pools"



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