Excerpt from Progress Report of the Bureau of Commercial Fisheries Radiobiological Laboratory, Beaufort, N. C: Fiscal Year 1968 For most of the year, the Acting Chief of the Estuarine Ecology Program, R. B. Williams, has been on educational leave at Oak Ridge National Laboratory, Oak Ridge, Tenn. This training consisted of course work in mathematics and systems ecology at the University of Tennessee, and work with J. S. Olson (oak Ridge National Laboratory) on a study supported by the Ford Foundation on the applicability of systems analysis to resource management. Williams has, in addition, be come familiar with the use of analog and digital computers. This training and the computer facilities at Oak Ridge National Laboratory were used in the analysis of previously gathered data on the standing crap and growth of needlesalt-marsh plant of the North Carolina coast. For this analysis, the standing crop of needle rush was divided into three categories-live, dying, and dead. These categories averaged 344, 504, and g./m.2 (dry weight), and had turnover rates of and year, respectively. The annual production of organic matter by needle rush, 735 was slightly greater than that of cord grass, another important salt-marsh species. 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.