Ward, A. K.. University of Alabama, award@biology.as.ua.edu
Johnson, M. K.. University of New England, mjohnson@mailbox.une.edu

 
FACTORS AFFECTING RETENTION AND TRANSFORMATION OF DISSOLVED ORGANIC CARBON BY ATTACHED MICROBIAL COMMUNITIES IN WETLANDS
 
Microbial communities attached to surfaces in wetlands play important roles in retention and transformation of dissolved organic carbon (DOC) from the overlying water. Studies conducted in a southeastern U.S. wetland revealed that a variety of factors affect the rate of DOC retention on surfaces, the release of DOC-derived carbon from surfaces back into the overlying water, and the chemical form of the released material. High DOC concentrations, labile sources of DOC, and absence of grazing macroinvertebrates all increased retention of DOC on surfaces and influenced the relative amount and form of material released from the attached microbial communities. Results from these studies provide a first step in predicting how differences in wetland habitats affect the relative retention or export of material passing through wetlands.
 
Day: Thursday, Feb. 4
Time: 11:30 - 11:45am
Location: Sweeney Center
 
Code: SS33TH1130S