Accession Number : ADA292680

Title :   Environmental Effects of Dredging. Construction of a Shallow-Water Gravel Bar Habitat Using Dredged Material.

Descriptive Note : Technical notes.

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

PDF Url : ADA292680

Report Date : MAR 1988

Pagination or Media Count : 9

Abstract : This note provides information on techniques, materials, and equipment necessary to construct a shallow-water aquatic habitat in small to medium-sized rivers using coarse-grained sediments. Two important attributes of flowing water systems (current velocity and substrate type) influence community characteristics, feeding strategies, and density of aquatic organisms (Hynes 197O). Typically, in the upper reaches of streams the substrate consists of cobbles and gravel; in the middle and lower reaches where current velocities are reduced, sands and silts pre-dominate. Darters, many minnows, immature caddisflies, and true flies are fast-water inhabitants, whereas bluegill, other sunfishes, aquatic worms, and mosquito larvae are better adapted for slack-water habitats.

Descriptors :   *GRAVEL, *SHALLOW WATER, *HABITATS, *DREDGED MATERIALS, VELOCITY, DENSITY, WATER FLOW, ENVIRONMENTS, STRATEGY, COMMUNITIES, WATER, GRAIN SIZE, SAND, SUBSTRATES, ENVIRONMENTAL IMPACT, RIVERS, AQUATIC ORGANISMS, FEEDING, DREDGING, SEDIMENTS, LARVAE, WORMS, SILT, CULICIDAE, MINNOWS, WINGED INSECTS.

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE