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https://hdl.handle.net/11681/3022| Title: | Assessment of implanted substrate samplers for macroinvertebrates inhabiting stone dikes of the lower Mississippi River |
| Authors: | Environmental and Water Quality Operational Studies (U.S.) Mathis, David B. Bingham, C. Rex. Sanders, Larry G. |
| Keywords: | Dikes Training structures Hydraulic structures Invertebrates Mississippi River Sampling Substrates Aquatic ecology Samplers Equipment |
| Publisher: | Environmental Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Description: | Miscellaneous Paper Abstract: The aquatic macroinvertebrate assemblage of a dike in the Lower Mississippi River was evaluated by implanting substrate basket samplers into the structure. The resulting data indicated that a diverse (38 taxa) and productive (average density = 101,968.4 organisms/m²) assemblage was present, and was characterized by net-spinning caddisflies, tube-building chironomids, clinging mayflies, and isopods. A comparison of the surface stones of the basket samplers with adjacent surface stones of the dike indicated that the implanted substrates provided representative estimates of both the composition and structure of the macroinvertebrate assemblage. These data also indicated significant macroinvertebrate activity below the surface substrate of the dike. Differences in habitat conditions among dike positions (downstream, top, upstream) were the major contributors to overall sample variability. Thus, stratified random sampling based on dike position is recommended for future comparative studies. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/3022 |
| Appears in Collections: | Miscellaneous Paper |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MP-E-82-1.pdf | 10.35 MB | Adobe PDF |  View/Open |