Accession Number : ADP006906

Title :   The Role of Microorganisms in Mobilization of Contaminants from Sediment,

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

Personal Author(s) : Gunnison, D. ; Blum, L. K. ; Mills, A. L.

Report Date : APR 1992

Pagination or Media Count : 17

Abstract : This paper describes the results of a literature survey on microorganisms and their ability to enhance the movement of contaminants from sediment into the overlying water. The sediments included in this discussion are from both subaqueous and wetland environments. The survey is specifically concerned with the role of microorganisms in several processes occurring in flooded soils and sediments; these processes include: formation of dissolved organic matter, both directly from nutrients in flooded soils and sediments and from living and dead plant and animal tissues; incorporation ind/or conversion of contaminants into dissolved organic form; and transformation of contaminants that enter flooded soil or sediment systems from an external source, such as tides, floodwaters, and overland runoff. This information is used to assess the importance of dissolved organic matter as a vehicle for transport of total organic matter and organic contaminants away from flooded soils and sediments. Special attention is given to the importance of microorganisms in the formation of dissolved organic matter and the transformation of contaminants into soluble form.

Descriptors :   *CONTAMINANTS, *MICROORGANISMS, *SEDIMENTS, *MOBILIZATION, ANIMALS, ATTENTION, CONVERSION, ENVIRONMENTS, EXTERNAL, LITERATURE SURVEYS, NUTRIENTS, RUNOFF, SOILS, SURVEYS, TIDES, TRANSFORMATIONS, TRANSPORT, VEHICLES, WATER, WETLANDS, SYMPOSIA, FLOODS.

Subject Categories : Microbiology
      Physical and Dynamic Oceanography
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE