Depth profiling
; Dissolved oxygen
; Escherichia coli
; Estuaries
; Pathogens
; Salinity measurement
; Spatial distribution
; Uncertainty analysis
; Analytical uncertainty
; Faecal contamination
; Faecal indicator organisms
; Melbourne , Australia
; Monitoring stations
; Routine monitoring
; Spatial variability
; Stratified estuaries
; Water pollution
; dissolved oxygen
; oxygen
; bioindicator
; biomonitoring
; coliform bacterium
; environmental assessment
; estuarine environment
; estuarine pollution
; pathogen
; spatial distribution
; spatial variation
; urban area
; water column
; Article
; Australia
; controlled study
; environmental temperature
; Escherichia coli
; estuary
; nonhuman
; pH
; prediction
; salinity
; turbidity
; urban area
; chemistry
; environmental monitoring
; Escherichia coli
; feces
; growth, development and aging
; microbiology
; temperature
; theoretical model
; Australia
; Melbourne
; Victoria [Australia]
; Escherichia coli
; Australia
; Environmental Monitoring
; Escherichia coli
; Estuaries
; Feces
; Models, Theoretical
; Oxygen
; Salinity
; Temperature
; Water Microbiology
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
This study investigated the spatial variability of a common faecal indicator organism, Escherichia coli, in an urban salt-wedge estuary in Melbourne, Australia. Data were collected through comprehensive depth profiling in the water column at four sites and included measurements of temperature, salinity, pH, dissolved oxygen, turbidity, and E. coli concentrations. Vertical variability of E. coli was closely related to the salt-wedge dynamics; in the presence of a salt-wedge, there was a significant decrease in E. coli concentrations with depth. Transverse variability was low and was most likely dwarfed by the analytical uncertainties of E. coli measurements. Longitudinal variability was also low, potentially reflecting minimal die-off, settling, and additional inputs entering along the estuary. These results were supported by a simple mixing model that predicted E. coli concentrations based on salinity measurements. Additionally, an assessment of a sentinel monitoring station suggested routine monitoring locations may produce conservative estimates of E. coli concentrations in stratified estuaries. � 2016 Elsevier Ltd
Environmental and Public Health Microbiology (EPHM) Laboratory, Monash Infrastructure Institute, Department of Civil Engineering, Monash University, Clayton, Victoria, Australia; Melbourne Water Corporation, Docklands, Victoria, Australia
Recommended Citation:
Jovanovic D.,Coleman R.,Deletic A.,et al. Spatial variability of E. coli in an urban salt-wedge estuary[J]. Marine Pollution Bulletin,2017-01-01,114(1)