Valerie Harwood | Academic Influence

Valerie Harwood's AcademicInfluence.com Rankings

Valerie Harwood

Earth Sciences

#2461

World Rank

#3323

Historical Rank

Environmental Science

#296

World Rank

#299

Historical Rank

earth-sciences Degrees

Valerie Harwood

Biology

#14847

World Rank

#18712

Historical Rank

Microbiology

#965

World Rank

#1067

Historical Rank

biology Degrees

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Earth Sciences
Biology

Valerie Harwood's Degrees

PhD Microbiology Stanford University
Masters Microbiology Stanford University
Bachelors Biology University of California, Berkeley

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Valerie Harwood's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Persistence and Differential Survival of Fecal Indicator Bacteria in Subtropical Waters and Sediments (2005) (595)
Validity of the Indicator Organism Paradigm for Pathogen Reduction in Reclaimed Water and Public Health Protection (2005) (573)
Microbial source tracking markers for detection of fecal contamination in environmental waters: relationships between pathogens and human health outcomes. (2014) (505)
Enterococci in the Environment (2012) (496)
Classification of Antibiotic Resistance Patterns of Indicator Bacteria by Discriminant Analysis: Use in Predicting the Source of Fecal Contamination in Subtropical Waters (2000) (379)
Performance, Design, and Analysis in Microbial Source Tracking Studies (2007) (289)
Identification of the sources of fecal coliforms in an urban watershed using antibiotic resistance analysis. (2002) (217)
Quantification of Human Polyomaviruses JC Virus and BK Virus by TaqMan Quantitative PCR and Comparison to Other Water Quality Indicators in Water and Fecal Samples (2009) (215)
Detection of Human-Derived Fecal Pollution in Environmental Waters by Use of a PCR-Based Human Polyomavirus Assay (2006) (198)
Presence of Pathogens and Indicator Microbes at a Non-Point Source Subtropical Recreational Marine Beach (2009) (180)
Microbial source tracking : methods, applications, and case studies (2011) (159)
Confirmation of putative stormwater impact on water quality at a Florida beach by microbial source tracking methods and structure of indicator organism populations. (2007) (132)
Microbes in beach sands: integrating environment, ecology and public health (2014) (127)
Performance of Two Quantitative PCR Methods for Microbial Source Tracking of Human Sewage and Implications for Microbial Risk Assessment in Recreational Waters (2012) (124)
Methods for isolation and confirmation of Vibrio vulnificus from oysters and environmental sources: a review. (2004) (122)
Phenotypic library-based microbial source tracking methods: efficacy in the California collaborative study. (2003) (120)
Diversity and Distribution of Escherichia coli Genotypes and Antibiotic Resistance Phenotypes in Feces of Humans, Cattle, and Horses (2006) (119)
Association of Fecal Indicator Bacteria with Human Viruses and Microbial Source Tracking Markers at Coastal Beaches Impacted by Nonpoint Source Pollution (2012) (116)
Reduction of Pathogens, Indicator Bacteria, and Alternative Indicators by Wastewater Treatment and Reclamation Processes (2003) (112)
Vancomycin-Resistant Enterococcus spp. Isolated from Wastewater and Chicken Feces in the United States (2001) (110)
Validation and field testing of library-independent microbial source tracking methods in the Gulf of Mexico. (2009) (106)
Current Status of Marker Genes of Bacteroides and Related Taxa for Identifying Sewage Pollution in Environmental Waters (2016) (99)
Minimizing errors in RT-PCR detection and quantification of SARS-CoV-2 RNA for wastewater surveillance (2021) (98)
The influence of predation and competition on the survival of commensal and pathogenic fecal bacteria in aquatic habitats. (2013) (93)
Comparison of Concentration Methods for Quantitative Detection of Sewage-Associated Viral Markers in Environmental Waters (2015) (92)
Relationships between Microbial Indicators and Pathogens in Recreational Water Settings (2018) (90)
Indicator microbes correlate with pathogenic bacteria, yeasts and helminthes in sand at a subtropical recreational beach site (2011) (90)
Microbial Source Tracking (2006) (90)
Isolation of Fecal Coliform Bacteria from the Diamondback Terrapin (Malaclemys terrapin centrata) (1999) (87)
Marine Bacteria Cause False-Positive Results in the Colilert-18 Rapid Identification Test for Escherichia coli in Florida Waters (2002) (87)
Quantifying environmental reservoirs of fecal indicator bacteria associated with sediment and submerged aquatic vegetation. (2011) (87)
Evaluation of antibiotic resistance analysis and ribotyping for identification of faecal pollution sources in an urban watershed (2005) (85)
Performance of viruses and bacteriophages for fecal source determination in a multi-laboratory, comparative study. (2013) (80)
Genetic Distinctions among Clinical and Environmental Strains of Vibrio vulnificus (2006) (80)
The importance of sediment and submerged aquatic vegetation as potential habitats for persistent strains of enterococci in a subtropical watershed. (2010) (79)
The effects of submerged aquatic vegetation on the persistence of environmental populations of Enterococcus spp. (2010) (77)
Beach sand and the potential for infectious disease transmission: observations and recommendations (2015) (73)
Precipitation influences pathogenic bacteria and antibiotic resistance gene abundance in storm drain outfalls in coastal sub-tropical waters. (2018) (73)
A synthesis of the effects of pesticides on microbial persistence in aquatic ecosystems (2015) (71)
Evaluation of the novel crAssphage marker for sewage pollution tracking in storm drain outfalls in Tampa, Florida. (2018) (71)
Assessment of sources of human pathogens and fecal contamination in a Florida freshwater lake. (2012) (71)
Indigenous Microbiota and Habitat Influence Escherichia coli Survival More than Sunlight in Simulated Aquatic Environments (2013) (70)
Application of enterococci antibiotic resistance patterns for contamination source identification at Huntington Beach, California. (2003) (70)
Assessment of statistical methods used in library-based approaches to microbial source tracking. (2003) (67)
Quantitative microbial risk assessment of microbial source tracking markers in recreational water contaminated with fresh untreated and secondary treated sewage. (2018) (63)
Investigation of human sewage pollution and pathogen analysis at Florida Gulf coast Beaches (2011) (61)
Real-Time PCR Assays for Quantification and Differentiation of Vibrio vulnificus Strains in Oysters and Water (2008) (59)
Daily measures of microbes and human health at a non-point source marine beach. (2011) (54)
Responses of diverse heterotrophic bacteria to elevated copper concentrations. (1994) (53)
Application of microbial source tracking methods in a Gulf of Mexico field setting (2009) (52)
Persistence and Decay of Fecal Microbiota in Aquatic Habitats (2019) (51)
Differential Decay of Enterococci and Escherichia coli Originating from Two Fecal Pollution Sources (2013) (50)
Application of SourceTracker for Accurate Identification of Fecal Pollution in Recreational Freshwater: A Double-Blinded Study. (2018) (49)
Kinetic and Mechanistic Studies of Prolyl Oligopeptidase from the Hyperthermophile Pyrococcus furiosus * (2001) (47)
Determination of wild animal sources of fecal indicator bacteria by microbial source tracking (MST) influences regulatory decisions. (2018) (47)
Microbial source tracking to identify human and ruminant sources of faecal pollution in an ephemeral Florida river (2012) (46)
Microbial source tracking in shellfish harvesting waters in the Gulf of Nicoya, Costa Rica. (2017) (44)
Synergy between quantitative microbial source tracking (qMST) and quantitative microbial risk assessment (QMRA): A review and prospectus. (2019) (43)
Impacts of a changing earth on microbial dynamics and human health risks in the continuum between beach water and sand. (2019) (41)
Hollow-Fiber Ultrafiltration and PCR Detection of Human-Associated Genetic Markers from Various Types of Surface Water in Florida (2010) (40)
Comparison of the Effects of Environmental Parameters on Growth Rates of Vibrio vulnificus Biotypes I, II, and III by Culture and Quantitative PCR Analysis (2011) (39)
Correlation of Quantitative PCR for a Poultry-Specific Brevibacterium Marker Gene with Bacterial and Chemical Indicators of Water Pollution in a Watershed Impacted by Land Application of Poultry Litter (2011) (38)
A novel microbial source tracking microarray for pathogen detection and fecal source identification in environmental systems. (2015) (36)
Multiple lines of evidence to identify sewage as the cause of water quality impairment in an urbanized tropical watershed. (2017) (34)
Test of Direct and Indirect Effects of Agrochemicals on the Survival of Fecal Indicator Bacteria (2011) (33)
The Interplay Between Predation, Competition, and Nutrient Levels Influences the Survival of Escherichia coli in Aquatic Environments (2016) (32)
Agrochemicals indirectly increase survival of E. coli O157:H7 and indicator bacteria by reducing ecosystem services. (2014) (32)
Microbial water quality in freshwater lakes with different land use (2013) (31)
Vancomycin-Resistant Enterococci and Bacterial Community Structure following a Sewage Spill into an Aquatic Environment (2016) (30)
Growth, copper-tolerant cells, and extracellular protein production in copper-stressed chemostat cultures of Vibrio alginolyticus (1993) (28)
Extended persistence of general and cattle-associated fecal indicators in marine and freshwater environment. (2019) (28)
Regulation of extracellular copper-binding proteins in copper-resistant and copper-sensitive mutants of Vibrio alginolyticus (1994) (27)
Relationships among microbial indicators of fecal pollution, microbial source tracking markers, and pathogens in Costa Rican coastal waters. (2020) (27)
Utility of Helicobacter spp. associated GFD markers for detecting avian fecal pollution in natural waters of two continents. (2016) (27)
Human-Associated Bacteroides spp. and Human Polyomaviruses as Microbial Source Tracking Markers in Hawaii (2016) (27)
Differential decomposition of bacterial and viral fecal indicators in common human pollution types. (2016) (26)
Microbial population dynamics in laboratory‐scale solid waste bioreactors in the presence or absence of biosolids (2009) (25)
Dynamic performance of biosand filters (2013) (25)
Opportunities and limitations of molecular methods for quantifying microbial compliance parameters in EU bathing waters. (2014) (24)
Detection and differentiation of Vibrio vulnificus and V. sinaloensis in water and oysters of a Gulf of Mexico estuary. (2013) (24)
Assumptions and limitations associated with microbial source tracking methods. (2007) (23)
A filter-based propidium monoazide technique to distinguish live from membrane-compromised microorganisms using quantitative PCR. (2012) (23)
Comparison of Genotypic and Phylogenetic Relationships of Environmental Enterococcus Isolates by BOX-PCR Typing and 16S rRNA Gene Sequencing (2011) (23)
Rapid dead-end ultrafiltration concentration and biosensor detection of enterococci from beach waters of Southern California. (2009) (22)
General and host-associated bacterial indicators of faecal pollution (2019) (22)
Comparison of two poultry litter qPCR assays targeting the 16S rRNA gene of Brevibacterium sp. (2014) (21)
Lack of Direct Effects of Agrochemicals on Zoonotic Pathogens and Fecal Indicator Bacteria (2012) (20)
The effect of agrochemicals on indicator bacteria densities in outdoor mesocosms. (2010) (20)
Assessment of Biogeochemical Deposits in Landfill Drainage Systems (2005) (18)
Relationship of human-associated microbial source tracking markers with Enterococci in Gulf of Mexico waters. (2013) (18)
Sediment and Vegetation as Reservoirs of Vibrio vulnificus in the Tampa Bay Estuary and Gulf of Mexico (2015) (17)
Validation of Rapid Methods for Enumeration of Markers for Human Sewage Contamination in Recreational Waters (2011) (17)
Antimicrobial Resistance Monitoring of Water Environments: A Framework for Standardized Methods and Quality Control (2022) (16)
LA35 Poultry Fecal Marker Persistence Is Correlated with That of Indicators and Pathogens in Environmental Waters (2015) (15)
Use of Escherichia coli genes associated with human sewage to track fecal contamination source in subtropical waters. (2019) (15)
An accelerated method for isolation of Salmonella enterica serotype Typhimurium from artificially contaminated foods, using a short preenrichment, immunomagnetic separation, and xylose-lysine-desoxycholate agar (6IX method). (2009) (15)
Using Microbial Source Tracking to Support TMDL Development and Implementation (2015) (15)
Protozoan Predation Is Differentially Affected by Motility of Enteric Pathogens in Water vs. Sediments (2014) (14)
Ultrafiltration and Microarray for Detection of Microbial Source Tracking Marker and Pathogen Genes in Riverine and Marine Systems (2016) (14)
Transport and attenuation of Salmonella enterica, fecal indicator bacteria and a poultry litter marker gene are correlated in soil columns. (2017) (14)
Lysimeter comparison of the role of waste characteristics in the formation of mineral deposits in leachate drainage systems (2006) (13)
The use of genetic typing methods to discriminate among strains of Vibrio cholerae, V. parahaemolyticus, and V. vulnificus. (2010) (13)
Toward Forensic Uses of Microbial Source Tracking. (2018) (11)
A framework for standardized qPCR-targets and protocols for quantifying antibiotic resistance in surface water, recycled water and wastewater (2022) (11)
Genetic and quantitative assessment of Vibrio vulnificus populations in oyster (Crassostrea virginica) tissues. (2011) (11)
Evidence for Extraintestinal Growth of Bacteroidales Originating from Poultry Litter (2014) (11)
Run‐off studies demonstrate parallel transport behaviour for a marker of poultry fecal contamination and Staphylococcus aureus (2014) (11)
Pathogen and Indicator Organism Reduction Through Secondary Effluent Filtration: Implications for Reclaimed Water Production (2008) (10)
Interventions can shift the thermal optimum for parasitic disease transmission (2021) (7)
Use of Microbial Source Tracking in the Legal Arena: Benefits and Challenges (2011) (6)
Differential Expression of a Sodium-Phosphate Cotransporter Among Vibrio vulnificus Strains (2013) (5)
Comment on "Environmental occurrence of the enterococcal surface protein (esp) gene is an unreliable indicator of human fecal contamination". (2009) (5)
Vancomycin resistance plasmids affect persistence of Enterococcus faecium in water. (2019) (5)
APPLICATION OF MICROBIAL SOURCE TRACKING ( MST ) METHODS IN ASSESSMENT OF THE SOURCES OF FECAL POLLUTION IN TRIBUTARIES (2007) (4)
Case Studies of Urban and Suburban Watersheds (2011) (4)
Collecting, Exploring, and Interpreting Microbiological Data Associated with Reclaimed Water Systems (2009) (4)
Application of the Bacteria Decision-Support Tool in the Hillsborough River Watershed (2009) (3)
Antibiotic-Resistant Enterococcus Species in Marine Habitats: A Review. (2020) (2)
General Faecal Indicator Bacteria and Host-Associated Bacterial Genetic Markers of Faecal Pollution (2018) (2)
Indicator Bacteria Agrochemicals on the Survival of Fecal Test of Direct and Indirect Effects of (2011) (2)
EFFECTIVENESS OF SECONDARY EFFLUENT FILTRATION FOR REMOVAL OF BACTERIA, ENTEROVIRUSES, AND PROTOZOAN PATHOGENS IN WASTEWATER RECLAMATION FACILITIES (2004) (2)
The relationship between environmental parameters and microbial water quality at two Costa Rican beaches from 2002 to 2017. (2021) (2)
USING BACTERIAL SOURCE TRACKING AND OTHER INNOVATIVE TECHNIQUES TO IDENTIFY SOURCES OF FECAL CONTAMINATION IN STORMWATER (2002) (2)
Keeping the bugs at bay (2003) (2)
Sewage Promotes Vibrio vulnificus Growth and Alters Gene Transcription in Vibrio vulnificus CMCP6 (2022) (2)
Erratum: Interlaboratory comparison of real-time PCR protocols for quantification of general fecal indicator bacteria (Environmental Science and Technology (2012) 46 (945-953) DOI: 10.1021/es2031455) (2012) (2)
The Evolving Science of Microbial Source Tracking (2016) (2)
Tolerance of three fungal species to lithium and cobalt: Implications for bioleaching of spent rechargeable Li‐ion batteries (2020) (2)
Chapter 2 Performance Criteria (2019) (1)
LA 35 Poultry Fecal Marker Persistence Is Correlated with that of Indicators and Pathogens in 1 Environmental Waters 2 3 (2015) (1)
Use of Coagulants to Enhance Biosand Filtration Performance (2012) (1)
Factors influencing pathogen removal in wastewater reclamation and reuse facilities (2002) (1)
Chapter 7 – Vibrios (2013) (1)
9 Indicators , sanitary surveys and source attribution techniques (2012) (1)
The Effect of Protozoa Indigenous to Lakewater and Wastewater on Decay of Fecal Indicator Bacteria and Coliphage (2023) (0)
A Systematic Review of Culture-Based Methods for Monitoring Antibiotic-Resistant Acinetobacter, Aeromonas, and Pseudomonas as Environmentally Relevant Pathogens in Wastewater and Surface Water. (2023) (0)
Interpreting, and Presenting Microbiological Data Associated with Reclaimed Water Systems. Report 04-012-01 (2009) (0)
Comparison of DNA Methylation in Vibrio vulnificus Cells Grown in Human Serum with Those Grown in Seawater (2019) (0)
Towards the standardization of Enterococcus culture methods for waterborne antibiotic resistance monitoring: A critical review of trends across studies (2022) (0)
WS 3(4) 247-252 (2003) (0)
Sand and Soil Sampling (2016) (0)
Critical review of methods for isothermal amplification of nucleic acids for environmental analysis. (2020) (0)
Detection and Occurrence of Indicator Organisms and Pathogens (2018) (0)
Interlaboratory performance and quantitative PCR data acceptance metrics for NIST SRM® 2917. (2022) (0)
0 Upper Hillsborough River Bacterial Contamination Assessment Bacterial Source Tracking : Antibiotic Resistance Analysis of Fecal Coliform Bacteria (2008) (0)
Differential Expression of a Sodium-Phosphate Cotransporter Among Vibrio vulnificus Strains (2013) (0)
Isolation and Assessment of Cyanide Biodegradation Potential of Indigenous Bacteria from Contaminated Soil (2022) (0)
Identifying Sources Of Fecal Pollution Improves Regulatory Decisions (2018) (0)
Recommendations for the use of metagenomics for routine monitoring of antibiotic resistance in wastewater and impacted aquatic environments (2023) (0)
Water Supplies: Microbiological Analysis (2016) (0)
EnvironmentsSunlight in Simulated Aquatic Influence Escherichia coli Survival More Indigenous Microbiota and Habitat (2014) (0)
EXTENT OF PATHOGENIC BACTERIA AND ANTIBIOTIC RESISTANCE GENES IN STORM DRAIN OUTFALLS (2018) (0)
Risk of Gastroenteritis from Swimming at a Wastewater-Impacted Tropical Beach Varies across Localized Scales (2023) (0)
Bacteria Zoonotic Pathogens and Fecal Indicator Lack of Direct Effects of Agrochemicals on (2012) (0)
Sewage Promotes Vibrio vulnificus Growth and Alters Gene Expression (2021) (0)
Microbial dynamics and human health risks at the beach – Will climate change matter? (2019) (0)
Diversity and Distribution of Escherichia coli Genotypes and Antibiotic Resistance Phenotypes in Feces of Humans, Cattle, and Horses (cid:1) (2006) (0)
Influence of temperature , salinity , and pH on logistic growth rate of Vibrio vulnificus biotypes as determined by culture-based and real-time PCR methods (2010) (0)
Why use spatial statistics in coral reef ecology ? Five practical reasons to measure spatial autocorrelation (2017) (0)
Protozoan Predation Is Differentially Affected by Motility of Enteric Pathogens in Water vs. Sediments (2014) (0)
Final Report Bacterial Source Tracking Using Antibiotic Resistance Analysis of Fecal Coliforms (2001) (0)
Corrigendum to "Precipitation influences pathogenic bacteria and antibiotic resistance genes abundance in storm drain outfalls in coastal sub-tropical waters" [Environ. Int. 116 (2018) 308-318]. (2018) (0)
The Interplay Between Predation, Competition, and Nutrient Levels Influences the Survival of Escherichia coli in Aquatic Environments (2016) (0)
MINIREVIEW Performance, Design, and Analysis in Microbial Source Tracking Studies (cid:1) (2007) (0)

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