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|Title:||Long-term monitoring of eleven Corps of Engineers habitat development field sites built of dredged material, 1974-1987|
|Authors:||Dredging Operations Technical Support Program (U.S.)|
Landin, Mary Collins, 1941-
Webb, J. W. (James Woodrow)
Knutson, Paul L.
Confined disposal facilities
|Publisher:||Environmental Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
Summary: The long-term study and monitoring of 11 habitat development field sites built by the US Army Corps of Engineers (CE) on dredged material in various locations throughout the United States were accomplished initially through the Dredged Material Research Program (DMRP), 1973-1978, which was conducted at the US Army Engineer Waterways Experiment Station (WES). At that time, seven field sites were built and developed in cooperation with CE District offices. From 1979 through 1987, under the Environmental Effects of Dredging Programs, Dredging Operations Technical Support, four additional field sites built by Districts with technical advice and assistance from WES were included in the long-term monitoring effort. In response to questions regarding the ecological contribution and longevity of the original seven field sites, a decision was made to undertake a long-term monitoring effort and to select reference sites at each of the field sites for comparison. Four new sites were added because they were each different from the original seven. Each of these 11 sites were chosen because each differed according to habitat developed, location, dredged material substrate, structural development, water and energy regime, land use potential, regional habitat needs, salinity, or other pertinent features that were representative of those encountered most often by field personnel in CE District offices where dredging occurs. Nine are intertidal, five are in freshwater, three in brackish water, and three in salt water. One is located in the Great Lakes and another on the US-Canadian border. Two are large-scale, ongoing confined disposal facilities (CDF). Study objectives were to (A.) document the long-term stability of each site, (B.) determine successional changes taking place, (C.) relate site functions and values to natural systems, and (D.) demonstrate that habitat development could be accomplished using dredged material. Since 1974, 39 WES technical reports and more than 100 technical papers have been published documenting site progress and presenting data analyses on the 11 sites. A summary chapter on each field site is presented in this report, and each is very briefly discussed in the following paragraphs. Two levels of monitoring were conducted: an intensive level in which vegetation, soils, benthic, and fisheries data were collected and a low-level effort in which vegetation, wildlife, and environmental and physical changes were documented at each site visit. Monitoring varied slightly between sites, depending upon availability of personnel and site requirements. NOTE: This file is large. Allow your browser several minutes to open the file.
|Appears in Collections:||Technical Report|