California's Response to the Zebra/Quagga Mussel Invasion in the West.

摘要

Zebra mussels, in the form of Dreissena bugensis, also known as quagga mussels, have now, for the first time, established a beachhead west of the continental divide. The significance and potential impact of this event cannot be overstated. Zebra mussels are harmful fouling organisms: they attach by the millions to submerged objects, fill and block water pipes, and clog protective screens. Zebra mussels are efficient filter feeders: they strip food from the water that is needed to sustain other aquatic life. Direct economic costs are on the order of $100 million a year in eastern North America; unquantified secondary and environmental costs could be substantially larger. Impacts in California and the West could be as great or greater than those in the East. California cities, industries and farms depend on the transport of huge quantities of water across very large distances through a complex and vulnerable system of canals, pipes, reservoirs and pumping stations. It is thus critical that aggressive, concerted efforts be undertaken immediately to eradicate, contain and monitor the zebra mussel infestation in the lower Colorado River system.