Word: waterproofing
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Dates: during 1991-1991
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...Initially, a new wetland created in south San Diego Bay seemed to do well -- until it became infested with tiny plant-sucking insects. Then scientists learned, to their dismay, that grasses in the artificial marsh did not grow high enough to provide the beetle predators of these pests with waterproof living quarters. Today, five years after its construction, this underachieving wetland continues to struggle along. Its grasses are stunted, its food web impoverished. Biologist Joy Zedler, director of San Diego State University's Pacific Estuarine Research Laboratory, awards the restoration effort a barely passing grade. "I doubt we'll ever...