Excerpt from Occurrence and Growth of Four Northwestern Tree Species Over Shallow Water Tables Keywords: Water - table, forest management, western hemlock, red alder, western redcedar, Sitka Spruce, Douglas - fir.patches are ugly, unproductive, and often avoidable. Several northwestern tree Species tolerate shallow water tables. If these tolerant Species are prop erly matched with water-table conditions, attractive and productive forests often can be reestablished. Quantitative information relating the occurrence and growth of northwestern tree Species to water-table depths is scarce. An earlier study of seedling growth over artificial water tables Showed that lodgepole pine (pinus contorta Dough), western redcedar, (thuja plicata Donn), red alder (alnus rubra and Sitka Spruce (picea sitchensis (bong.) Carr.) seedlings grew moderately well over shallow water tables, but Douglas-fir barely survived. 1/ However, the growth and survival characteristics Shown by seedlings may not be maintained throughout the life of a tree, and artificial water tables may be different from water tables in the field. In the present study, we measured larger trees in the field to compare the occurrence and growth of red alder, western redcedar, Sitka Spruce, and western hemlock (tsuga heterophylla (raf.) Sarg. 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.