Excerpt from Harmful Non-Indigenous Species in the U. S: Hearings Before the Committee on Governmental Affairs, United States Senate, One Hundred Third Congress, Second Session; March 11 and 15, 1994 Hydrilla is the scourge of Eastern waterways. This aquatic weed blocks irrigation and drainage canals, promotes sedimentation in flood control reservoirs, impedes navigation, and suppresses fish eries. $100 million is spent annually to control this and other aquatic pests. Aquatic nuisances such as zebra mussels and Asian clams regularly clog municipal water lines and irrigation pipes. But nowhere are the effects of alien species more dramatic than in Hawaii. The September 1993 Office of Technology Assessment report concluded that few economic or non-economic activities in Hawaii are unaffected by the influx of alien pests. The Aloha State is a case study of what happens when alien pests run wild. Hawaii receives an average of 18 new pests annually. This is more than a million times the natural rate and more than twice the number absorbed each year on the mainland. The lack of a win ter frost means that these uninvited guests multiply all year long. Hawaii has no aloha for these noxious pests. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.