Crater Lake Limnological Studies

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Excerpt from Crater Lake Limnological Studies: 1986 Annual ReportResults from limnological studies of Crater Lake between 1978 and 1981 suggested that the clarity of the lake was declining and that the species composition and vertical distribution of the phytoplankton had changed when compared to studies from 1913 to 1969. Workshops were convened in early 1982 to review the data, and it was concluded that the information base was insufficient to determine if the lake had changed. A limnological study was initiated in 1982 by the National Park Service to increase the data base on the lake. That fall, Congress mandated (public Law 97-250) a 10-year limnological study of Crater Lake. The goals were to (1) develop a limnological data base for comparison with future conditions, (2) develop a better understanding of physical, chemical, and biological components of the lake system, and (3) establish a long-term monitoring program to examine the lake characteristics through time. An important aspect of the study was to determine if the lake had changed, and if so, identify the cause(s) and recommend mitigation measures if anthropogenic in nature.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.