| DOI: | 10.1016/j.watres.2018.07.034
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| Scopus记录号: | 2-s2.0-85050560063
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| 论文题名: | Determination of wild animal sources of fecal indicator bacteria by microbial source tracking (MST) influences regulatory decisions |
| 作者: | Nguyen K.H.; Senay C.; Young S.; Nayak B.; Lobos A.; Conrad J.; Harwood V.J.
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| 刊名: | Water Research
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| ISSN: | 431354
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| 出版年: | 2018
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| 卷: | 144 | | 起始页码: | 424
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| 结束页码: | 434
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| 语种: | 英语
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| 英文关键词: | Fecal indicator bacteria
; Microbial source tracking
; Recreational water
; TMDL
; Water body management
; Water quality
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| Scopus关键词: | Animals
; Coliform bacteria
; Conservation
; Contamination
; Cost effectiveness
; Decision making
; Genes
; River pollution
; Sediments
; Sewage
; Surface waters
; Vegetation
; Water analysis
; Water quality
; Fecal indicator bacteria
; Microbial source tracking
; Recreational water
; TMDL
; Waterbodies
; Reservoirs (water)
; bacterium
; bioindicator
; concentration (composition)
; decision analysis
; deer
; feces
; guideline
; reservoir
; surface water
; tracking
; water management
; water pollution
; water quality
; watershed
; wild population
; analytic method
; Article
; Bacteroides
; bird
; coliform bacterium
; cross reaction
; decision making
; fecal coliform
; fecal indicator bacteria
; feces
; Florida
; human
; limit of detection
; marker gene
; microbial source tracking
; nonhuman
; priority journal
; sediment
; sewage
; vegetation
; water sampling
; watershed
; white tailed deer
; wild animal
; wildlife conservation
; Florida [United States]
; United States
; Animalia
; Aves
; Bacteroides
; Odocoileus virginianus
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| 英文摘要: | Fecal indicator bacteria (FIB) are used to assess fecal pollution levels in surface water and are among the criteria used by regulatory agencies to determine water body impairment status. While FIB provide no information about pollution source, microbial source tracking (MST) does, which contributes to more direct and cost effective remediation efforts. We studied a watershed in Florida managed for wildlife conservation that historically exceeded the state regulatory guideline for fecal coliforms. We measured fecal coliforms, enterococci, a marker gene for avian feces (GFD), and a marker gene for human-associated Bacteroides (HF183) in sediment, vegetation, and water samples collected monthly from six sites over two years to: 1) assess the influence of site, temporal factors, and habitat (sediment, vegetation, and water) on FIB and MST marker concentrations, 2) test for correlations among FIB and MST markers, and 3) determine if avian feces and/or human sewage contributed to FIB levels. Sediment and vegetation had significantly higher concentrations of FIB and GFD compared to water and thus may serve as microbial reservoirs, providing unreliable indications of recent contamination. HF183 concentrations were greatest in water samples but were generally near the assay limit of detection. HF183-positive results were attributed to white-tailed deer (Odocoileus virginianus) feces, which provided a false indication of human sewage in this water body. FIB and GFD were positively correlated while FIB and HF183 were negatively correlated. We demonstrated that birds, not sewage, were the main source of FIB, thus avoiding implementation of a total maximum daily load program (TMDL). Our results demonstrate that the concomitant use of FIB and MST can improve decision-making and provide direction when water bodies are impaired, and provides a strategy for natural source exclusion in water bodies impacted by wild animal feces. © 2018 |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/112538
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL 33620, United States
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| Recommended Citation: | |
Nguyen K.H.,Senay C.,Young S.,et al. Determination of wild animal sources of fecal indicator bacteria by microbial source tracking (MST) influences regulatory decisions[J]. Water Research,2018-01-01,144
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