Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a
Dale Griffin, Ph.D. (Former Employee)
Science and Products
U.S. Geological Survey Microbiologist Selected as an American Society for Microbiology Distinguished Lecturer
The Influence of Aerosols on Harmful Algal Toxin Production and Maintenance
USGS SCoRR Project: Antibiotic Resistance Genes in Microbial Communities in Soils and Sediments of the United States
Joint USGS/USEPA Pathogens in Soils Geographic Information Systems Project
Optimized Approaches Coupled with Interactive Mapping Application Provide a Tool to Visualize the Occurrence of Soil Pathogens
Nutrients in Dust from the Sahara Desert cause Microbial Blooms on the East Coast of the United States
Southeast Florida and Florida Keys: Antibiotic Resistance in Association with Ocean Outfalls and the Antibiotic Treatment of Diseased Corals
Analytical inorganic chemistry results for samples collected for the Sediment-Bound Contaminant Resiliency and Response Strategy pilot study, northeastern United States, 2015
Digital Polymerase Chain Reaction (dPCR) and Presence/Absence Quantitative Polymerase Chain Reaction (qPCR) Data From the Sediment-Bound Contaminant Resiliency and Response Strategy Pilot Study, Northeastern United States, 2015
Experimental PCR Data on Soil DNA Extracts
Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a
Bottled water contaminant exposures and potential human effects
Abundance and distribution of large thecosome pteropods in the northern Gulf of Mexico
The ecological role of large thecosome pteropods in the pelagic ecosystem of the northern Gulf of Mexico (GoM) may be substantial, both in the food web and biogeochemical cycling. We analyzed species abundances, vertical and horizontal distributions of large species with calcareous shells (those collected in 3-mm mesh nets). Pteropod samples were collected following the 2010 Deepwater Horizon oil
Spatially integrating microbiology and geochemistry to reveal complex environmental health issues: Anthrax in the contiguous United States
Maxent models were run using the B. anthracis presence data and/or the animal outbreak presence data. Models run using the animal outbreak data alone utilized two scales: the Outbreak State scale which included only states reporting animal anthrax outbreaks from 2001 to 2013 and the National scale which included all states in the contiguous United States. Three iterations of the environmental data
Efficiency of bioaerosol samplers: A comparison study
Bioaerosols, including bacteria and fungi, are ubiquitous and have been shown to impact various organisms as well as biogeochemical cycles and human health. However, sample collection poses a challenge for aeromicrobiologists and can determine the success of a study. Establishing a standard collection procedure for bioaerosol sampling could help advance the field. We tested the efficiency (number
The concept of evanescent microbial ecosystems in Earth's atmosphere
Assessment of water quality and fecal contamination sources at Hook Pond, East Hampton, New York
SummaryThe U.S. Geological Survey, in cooperation with the Village of East Hampton, New York, conducted a 1-year study from August 2017 to August 2018 to provide data necessary to improve understanding of the sources of nutrients and pathogens to Hook Pond watershed to allow for possible mitigation or reduction of loads. Chronic eutrophication and recent concern over harmful cyanobacteria in Hook
Poultry litter as potential source of pathogens and other contaminants in groundwater and surface water proximal to large-scale confined poultry feeding operations
Antibiotic resistance in marine microbial communities proximal to a Florida sewage outfall system
Colony-forming unit spreadplate assay versus liquid culture enrichment-polymerase chain reaction assay for the detection of Bacillus Endospores in soils
An overview of bioaerosol load and health impacts associated with dust storms: A focus on the Middle East
Science questions and knowledge gaps to study microbial transport and survival in Asian and African dust plumes reaching North America
An integrative GIS approach to analyzing the impacts of septic systems on the coast of Florida, USA
Science and Products
U.S. Geological Survey Microbiologist Selected as an American Society for Microbiology Distinguished Lecturer
The Influence of Aerosols on Harmful Algal Toxin Production and Maintenance
USGS SCoRR Project: Antibiotic Resistance Genes in Microbial Communities in Soils and Sediments of the United States
Joint USGS/USEPA Pathogens in Soils Geographic Information Systems Project
Optimized Approaches Coupled with Interactive Mapping Application Provide a Tool to Visualize the Occurrence of Soil Pathogens
Nutrients in Dust from the Sahara Desert cause Microbial Blooms on the East Coast of the United States
Southeast Florida and Florida Keys: Antibiotic Resistance in Association with Ocean Outfalls and the Antibiotic Treatment of Diseased Corals
Analytical inorganic chemistry results for samples collected for the Sediment-Bound Contaminant Resiliency and Response Strategy pilot study, northeastern United States, 2015
Digital Polymerase Chain Reaction (dPCR) and Presence/Absence Quantitative Polymerase Chain Reaction (qPCR) Data From the Sediment-Bound Contaminant Resiliency and Response Strategy Pilot Study, Northeastern United States, 2015
Experimental PCR Data on Soil DNA Extracts
Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a
Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a
Bottled water contaminant exposures and potential human effects
Abundance and distribution of large thecosome pteropods in the northern Gulf of Mexico
The ecological role of large thecosome pteropods in the pelagic ecosystem of the northern Gulf of Mexico (GoM) may be substantial, both in the food web and biogeochemical cycling. We analyzed species abundances, vertical and horizontal distributions of large species with calcareous shells (those collected in 3-mm mesh nets). Pteropod samples were collected following the 2010 Deepwater Horizon oil
Spatially integrating microbiology and geochemistry to reveal complex environmental health issues: Anthrax in the contiguous United States
Maxent models were run using the B. anthracis presence data and/or the animal outbreak presence data. Models run using the animal outbreak data alone utilized two scales: the Outbreak State scale which included only states reporting animal anthrax outbreaks from 2001 to 2013 and the National scale which included all states in the contiguous United States. Three iterations of the environmental data
Efficiency of bioaerosol samplers: A comparison study
Bioaerosols, including bacteria and fungi, are ubiquitous and have been shown to impact various organisms as well as biogeochemical cycles and human health. However, sample collection poses a challenge for aeromicrobiologists and can determine the success of a study. Establishing a standard collection procedure for bioaerosol sampling could help advance the field. We tested the efficiency (number
The concept of evanescent microbial ecosystems in Earth's atmosphere
Assessment of water quality and fecal contamination sources at Hook Pond, East Hampton, New York
SummaryThe U.S. Geological Survey, in cooperation with the Village of East Hampton, New York, conducted a 1-year study from August 2017 to August 2018 to provide data necessary to improve understanding of the sources of nutrients and pathogens to Hook Pond watershed to allow for possible mitigation or reduction of loads. Chronic eutrophication and recent concern over harmful cyanobacteria in Hook