| Content Provider |
World Health Organization (WHO)-Global Index Medicus |
| Author |
Duan, Shuiwang Roberts, Dustin Saxton, Tara Schwarz, John R. Fox, Jessica Harrison, Sarah DiGuardi, Katherine Hochman, Mona Elliott, Catherine Amon, Rainer M. W. Brinkmeyer, Robin Stein, Ron Ellis, Nicholas |
| Spatial Coverage |
Texas |
| Description |
Author Affiliation: Brinkmeyer R ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: brinkmer@tamug.edu.); Amon RM ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA.); Schwarz JR ( Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX 77553, USA.); Saxton T ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: tsaxton@glorienergy.com.); Roberts D ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: dustin.roberts@tecq.texas.gov.); Harrison S ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: sah288@msstate.edu.); Ellis N ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: nicholas.ellis@tceq.texas.gov.); Fox J ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: jessica.fox@tceq.texas.gov.); DiGuardi K ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA.); Hochman M ( Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX 77553, USA.); Duan S ( Department of Marine Sciences, Texas A&M University at Galveston, Galveston, TX 77553, USA. Electronic address: sduan@umd.edu.); Stein R ( Total Maximum Daily Loads Program, Texas Commission on Environmental Quality, Austin, TX 78753, USA.); Elliott C ( Harris County Flood Control District, Houston, TX 77092, USA.) |
| Abstract |
The purpose of this research was to determine if Escherichia coli and enterococci in streambed and bank sediments from two urban bayous, Buffalo Bayou and White Oak Bayou, in Houston, TX, USA are a significant source of the chronically high levels of these bacteria in the overlying water. The watersheds of the bayous lie within highly urbanized areas of Greater Houston and there is primary recreational contact with the public. Extensive sampling of the watersheds was conducted from 2008 to 2010. Both fecal indicator bacteria were found at ≥ 10(4)MPNgdry wt.(-1) concentrations in the upper 1cm of sediment cores with declines by orders of magnitude at 15 and 30 cm sediment horizons and in some cases 60 cm, but, nonetheless, indicating that they can remain viable even at depth. No interannual variation was observed. And, there was no correlation with percent organic matter, however there was moderate correlation (R(2)=0.12; p=0.001) of E. coli with sediment moisture. In sediments, most E. coli and enterococci in Buffalo Bayou (76%) and White Oak Bayou (87.5%) were associated with fine sand grains (60 to 250 µm). In the water column, E. coli was associated, in roughly equal percentages, with particle sizes <10, 10-25, 25-63, and ≥ 63 µm (21.9, 25.6, 30.4, and 32.9%, respectively). Enterococci were mostly attached to particle sizes in the ranges of 10-25µm (36.0%) and 25-63 µm (31.1%) as well as ≥ 63 µm (37.7%) (p=0.0001). Fingerprinting of E. coli isolates from both bayous with Rep-PCR and the BOX A1R primer was used to demonstrate translocation of sediments from the upper to lower watersheds. |
| ISSN |
00489697 |
| Volume Number |
502 |
| e-ISSN |
18791026 |
| Journal |
Science of The Total Environment |
| Language |
English |
| Publisher |
Elsevier |
| Publisher Date |
2015-01-01 |
| Publisher Place |
Netherlands |
| Access Restriction |
One Nation One Subscription (ONOS) |
| Subject Keyword |
Enterococcus Growth & Development Environmental Monitoring Escherichia Coli Geologic Sediments Microbiology Rivers Water Microbiology Classification Texas Urbanization Water Movements Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type |
Text |
| Resource Type |
Article |
| Subject |
Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
