Research Topics
| Richard L WhitmanSummaryAffiliation: U.S. Geological Survey Country: USA Publications
| Collaborators
|
Detail Information
Publications
Characterization and statistical modeling of bacterial (Escherichia coli) outflows from watersheds that discharge into southern Lake MichiganGreg A Olyphant
Department of Geological Sciences, Indiana University, Bloomington, IN, USA
Environ Monit Assess 81:289-300. 2003..These models, which utilize data that can be collected on a real-time basis, could form part of an Early Warning System for predicting beach closures...- Examination of the watershed-wide distribution of Escherichia coli along Southern Lake Michigan: an integrated approachRichard L Whitman
U S Geological Survey, Great Lakes Science Center, 1100 N Mineral Springs Road, Porter, IN 46304, USA
Appl Environ Microbiol 72:7301-10. 2006..coli-laden beach sand. When examining indicator bacteria source, flux, and context, the entire "beachshed" as a dynamic interacting system should be considered... - Relationship and variation of qPCR and culturable Enterococci estimates in ambient surface waters are predictableRichard L Whitman
Lake Michigan Ecological Research Station, Great Lakes Science Center, United States Geological Survey, Porter, Indiana 46304, USA
Environ Sci Technol 44:5049-54. 2010.... - Sunlight, season, snowmelt, storm, and source affect E. coli populations in an artificially ponded streamRichard L Whitman
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, Porter, Indiana 46304, USA
Sci Total Environ 390:448-55. 2008..An understanding of how environmental factors interact with E. coli populations is important for assessing anticipated contaminant loading and the reduction of indicator bacteria in downstream reaches... - Summer E. coli patterns and responses along 23 Chicago beachesRichard L Whitman
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Road, Porter, Indiana 46304, USA
Environ Sci Technol 42:9217-24. 2008..Comparing beaches along a targeted coastline allows a better understanding of inherent background regional fluctuations and, ultimately, better predictions of E. coli concentrations in coastal recreational water... - Hand-mouth transfer and potential for exposure to E. coli and F+ coliphage in beach sand, Chicago, IllinoisRichard L Whitman
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Road, Porter, IN 46304, USA
J Water Health 7:623-9. 2009.... - Population structure of Cladophora-borne Escherichia coli in nearshore water of Lake MichiganMuruleedhara N Byappanahalli
United States Geological Survey, Lake Michigan Ecological Research Station, Porter, IN 46304, USA
Water Res 41:3649-54. 2007..coli isolates in the DNA fingerprint library tested. Taken together, these results indicate that E. coli strains associated with Cladophora may be a recurring source of indicator bacteria to the nearshore beach... - Environmental occurrence of the enterococcal surface protein (esp) gene is an unreliable indicator of human fecal contaminationMuruleedhara N Byappanahalli
U S Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 Mineral Springs Road, Porter, Indiana 46304, USA
Environ Sci Technol 42:8014-20. 2008..e., human vs. nonhuman)... - Population structure, persistence, and seasonality of autochthonous Escherichia coli in temperate, coastal forest soil from a Great Lakes watershedMuruleedhara N Byappanahalli
United States Geological Survey, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Road, Porter, IN 46304, USA
Environ Microbiol 8:504-13. 2006..Thus, in assessing E. coli sources within a stream, it is important to differentiate background soil loadings from inputs derived from animal and human fecal contamination... - Seasonal stability of Cladophora-associated Salmonella in Lake Michigan watershedsMuruleedhara N Byappanahalli
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, Porter, IN 46304, USA
Water Res 43:806-14. 2009..Our studies indicate that Cladophora is likely an important reservoir for Salmonella and other enteric bacterial pathogens in Lake Michigan beachsheds, which in turn may influence nearshore water quality... - Seasonal persistence and population characteristics of Escherichia coli and enterococci in deep backshore sand of two freshwater beachesMuruleedhara N Byappanahalli
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Road, Porter, Indiana 46304, USA
J Water Health 4:313-20. 2006..Further, backshore sand at the water table may act as a reservoir for these bacteria and potentially for human pathogens... - Nowcast modeling of Escherichia coli concentrations at multiple urban beaches of southern Lake MichiganMeredith B Nevers
US Geological Survey, Great Lakes Science Center, 1100 N Mineral Springs Road, Porter, IN 46304, USA
Water Res 39:5250-60. 2005..coli levels above the EPA closure limit (235 CFU/100 ml) on five of eleven occasions, indicating that the model is a more reliable alternative to the monitoring approach employed at most recreational beaches... - Interaction and influence of two creeks on Escherichia coli concentrations of nearby beaches: exploration of predictability and mechanismsMeredith B Nevers
Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Road, Porter, IN 46304 USA
J Environ Qual 36:1338-45. 2007.... - Geographic relatedness and predictability of Escherichia coli along a peninsular beach complex of Lake MichiganMeredith B Nevers
US Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Rd, Porter, IN 46304, USA
J Environ Qual 38:2357-64. 2009..Regional, multi-beach, and individual beach predictive models should be explored alongside other techniques for improving monitoring reliability at Great Lakes beaches... - Coastal strategies to predict Escherichia coli concentrations for beaches along a 35 km stretch of Southern Lake MichiganMeredith B Nevers
U S Geological Survey, Great Lakes Science Center, 1100 N Mineral Springs Road, Porter, Indiana 46304, USA
Environ Sci Technol 42:4454-60. 2008..By extending the modeling approach to include more coastline distance, broader-scale spatial and temporal changes in bacteria concentrations and the influencing factors can be characterized... - Foreshore sand as a source of Escherichia coli in nearshore water of a Lake Michigan beachRichard L Whitman
Great Lakes Science Center, U S Geological Survey, Lake Michigan Ecological Research Station, Porter, Indiana 46304, USA
Appl Environ Microbiol 69:5555-62. 2003.... - Incidence of the enterococcal surface protein (esp) gene in human and animal fecal sourcesRichard L Whitman
U S Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 Mineral Springs Road, Porter, Indiana 46304, USA
Environ Sci Technol 41:6090-5. 2007..Both esp(fm) and esp(fs/fm) were common in raw sewage, but neither one efficiently differentiated between animal and other human sources... - Occurrence of Escherichia coli and enterococci in Cladophora (Chlorophyta) in nearshore water and beach sand of Lake MichiganRichard L Whitman
Lake Michigan Ecological Research Station, United States Geological Survey, Porter, Indiana 46304
Appl Environ Microbiol 69:4714-9. 2003..coli and enterococci as indicators of water quality for freshwater recreational beaches... - Linking non-culturable (qPCR) and culturable enterococci densities with hydrometeorological conditionsMuruleedhara N Byappanahalli
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Road, Porter, IN 46304, USA
Sci Total Environ 408:3096-101. 2010..Selected predictors and model results highlight the differences between the environmental responses of the two method endpoints and the potentially high variance in qPCR results... - Solar and temporal effects on Escherichia coli concentration at a Lake Michigan swimming beachRichard L Whitman
U S Geological Survey, Great Lakes Science Center, 1100 N Mineral Springs Rd, Porter, IN 46304, USA
Appl Environ Microbiol 70:4276-85. 2004..coli as an indicator organism... - Escherichia coli sampling reliability at a frequently closed Chicago Beach: monitoring and management implicationsRichard L Whitman
US Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, Porter, Indiana 46304, USA
Environ Sci Technol 38:4241-6. 2004..Greater monitoring efficacy will yield better policy decisions, risk assessments, programmatic goals, and future usefulness of the information... - Coastal loading and transport of Escherichia coli at an embayed beach in Lake MichiganZhongfu Ge
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Road, Porter, Indiana 46304, USA
Environ Sci Technol 44:6731-7. 2010..The embayed beach setting and the statistical and numerical methods used in the present study have wide applicability for analyzing recreational water quality at similar marine and freshwater sites... - Beach monitoring criteria: reading the fine printMeredith B Nevers
U S Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Road, Porter, Indiana 46304, United States
Environ Sci Technol 45:10315-21. 2011..This issue will be an important consideration in addressing the forthcoming beach monitoring standards... - Efficacy of monitoring and empirical predictive modeling at improving public health protection at Chicago beachesMeredith B Nevers
U S Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Road, Porter, IN 46304, USA
Water Res 45:1659-68. 2011..These results emphasize that emerging monitoring approaches such as empirical models are not equally applicable at all beaches, and combining monitoring approaches may expand beach access... - Occurrence and growth characteristics of Escherichia coli and enterococci within the accumulated fluid of the northern pitcher plant (Sarracenia purpurea L.)Richard L Whitman
Lake Michigan Ecological Research Station, United States Geological Survey, Porter, IN 46304, USA
Can J Microbiol 51:1027-37. 2005..g., competition for nutrients) may restrict their growth... - Policies and practices of beach monitoring in the Great Lakes, USA: a critical reviewMeredith B Nevers
US Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N Mineral Springs Rd, Porter, Indiana 46304, USA
J Environ Monit 12:581-90. 2010..We also assess the future of Great Lakes monitoring and the advantages and disadvantages of establishing standards that are evenly applied across all beaches... - Economic and health risk trade-offs of swim closures at a Lake Michigan beachSharyl J M Rabinovici
US Geological Survey, Western Geographic Science Center, 345 Middlefield Road MS 531, Menlo Park, California 94025, USA
Environ Sci Technol 38:2737-45. 2004.... - The population structure of Escherichia coli isolated from subtropical and temperate soilsMuruleedhara N Byappanahalli
Lake Michigan Ecological Research Station, United States Geological Survey, Porter, IN 46304, USA
Sci Total Environ 417:273-9. 2012..This supports the hypothesis that these bacteria are not unique and multiple genotypes can readily adapt to become part of the soil autochthonous microflora... - Wave-induced mass transport affects daily Escherichia coli fluctuations in nearshore waterZhongfu Ge
United States Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Road, Porter, Indiana 46304, United States
Environ Sci Technol 46:2204-11. 2012.... - Modeling the transport and inactivation of E. coli and enterococci in the near-shore region of Lake MichiganLubo Liu
Department of Civil and Environmental Engineering, Michigan State University, East Lansing 48824, USA
Environ Sci Technol 40:5022-8. 2006..Sunlight is a major contributor to inactivation in the surf-zone and the formulation based on sunlight, temperature and sedimentation is preferred over the first-order inactivation formulation... - Cladophora (Chlorophyta) spp. harbor human bacterial pathogens in nearshore water of Lake MichiganSatoshi Ishii
Department of Soil, Water, and Climate, University of Minnesota, 1991 Upper Buford Circle, 439 Borlaug Hall, St. Paul, MN 55108, USA
Appl Environ Microbiol 72:4545-53. 2006.... - Elements of a predictive model for determining beach closures on a real time basis: the case of 63rd Street Beach ChicagoGreg A Olyphant
Department of Geological Sciences and Center for Geospatial Data Analysis, Indiana University, Bloomington, Indiana, USA
Environ Monit Assess 98:175-90. 2004.... - Evaluation of a rapid, quantitative real-time PCR method for enumeration of pathogenic Candida cells in waterNichole E Brinkman
National Exposure Research Laboratory, U.S. Environmental Protection Agency, 26 West Martin Luther King Drive, Cincinnati, OH 45268, USA
Appl Environ Microbiol 69:1775-82. 2003....