Word: betz
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Dates: during 1990-1999
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Even when restorationists have some notion of how to begin, they face a daunting enterprise. "You can destroy a prairie in two hours," observes Robert Betz, a Northeastern Illinois University biology professor. "But to rebuild it might take half a century or more." Essential to the task is identifying the dynamic process that shaped each ecosystem and, if need be, putting it back into play. Prairies and bur oak woodlands, for instance, were both created by fire. Without fire, their bright flowers and luxuriant grasses are shaded out by invading brush. Where in centuries past roving bands of Plains Indians...