Changyoon Jeong, Louisiana State University, Louisiana State University, Bossier City, LA and Jong Hyun Ham, Plant Pathology and Crop Physiology, LSU AgCenter, Baton Rouge, LA
Wetland with dynamic ecosystems provides biogeochemical cycling, water quality improvement, and wildlife habitat. In addition, management practices using the constructed wetland systems adjacent to agricultural fields for nutrient reductions from agricultural field runoff are a recent development. Thus, constructed wetlands are possibly mitigating contaminant and excess nutrient through several different functions. The composition of sediment microbial community in a constructed wetland receiving wastewater from concentrated poultry feeding operations was investigated, and performed a detailed comparison of the microbial diversity in contaminated and uncontaminated ecosystems. We hypothesized that the microbial community structures would differ by different wetland ecosystems. This research was carried out to determine the long term impacts of runoff from concentrated poultry feeding operating house on bacterial community structural changes in constructed wetland system. The objective of the study was to generate information about bacterial community and the denitrifier population changes under a high level of long term impacted wetland systems. In this study, the pyrosequencing of 16S ribosomal DNA was used to characterize the sediment microbial community composition.