John T. Lisle, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 38
Microbial and geochemical investigations of dissolved organic carbon and microbial ecology of native waters from the Biscayne and Upper Floridan Aquifers Microbial and geochemical investigations of dissolved organic carbon and microbial ecology of native waters from the Biscayne and Upper Floridan Aquifers
Groundwater resources in the United States are under ever-increasing demands for potable, irrigation, and recreational uses. Additionally, aquifer systems are being used or targeted for use as storage areas for treated surface waters and (or) groundwaters via injection (for example, aquifer storage and recovery). To date, the influence that the nutrients, including carbon, in the...
Authors
John T. Lisle, Ron W. Harvey, George R. Aiken, David W. Metge
Culture-independent characterization of bacterial communities associated with the cold-water coral Lophelia pertusa in the northeastern Gulf of Mexico Culture-independent characterization of bacterial communities associated with the cold-water coral Lophelia pertusa in the northeastern Gulf of Mexico
Bacteria are recognized as an important part of the total biology of shallow-water corals. Studies of shallow-water corals suggest that associated bacteria may benefit the corals by cycling carbon, fixing nitrogen, chelating iron, and producing antibiotics that protect the coral from other microbes. Cold-water or deep-sea corals have a fundamentally different ecology due to their...
Authors
Christina A. Kellogg, John T. Lisle, Julia P. Galkiewicz
Bacteriophage in polar inland waters Bacteriophage in polar inland waters
Bacteriophages are found wherever microbial life is present and play a significant role in aquatic ecosystems. They mediate microbial abundance, production, respiration, diversity, genetic transfer, nutrient cycling and particle size distribution. Most studies of bacteriophage ecology have been undertaken at temperate latitudes. Data on bacteriophages in polar inland waters are scant but...
Authors
Christin Sawstrom, John Lisle, A.M. Anesio, John C. Priscu, J. Laybourn-Parry
Identity and physiology of a new psychrophilic eukaryotic green alga, Chlorella sp., strain BI, isolated from a transitory pond near Bratina Island, Antarctica Identity and physiology of a new psychrophilic eukaryotic green alga, Chlorella sp., strain BI, isolated from a transitory pond near Bratina Island, Antarctica
Permanently low temperature environments are one of the most abundant microbial habitats on earth. As in most ecosystems, photosynthetic organisms drive primary production in low temperature food webs. Many of these phototrophic microorganisms are psychrophilic; however, functioning of the photosynthetic processes of these enigmatic psychrophiles (the 'photopsychrophiles') in cold...
Authors
R. M. Morgan-Kiss, A.G. Ivanov, S. Modla, K. Czymmek, N.P.A. Huner, J.C. Priscu, J.T. Lisle, T.E. Hanson
Effects of wastewater disinfection on waterborne bacteria and viruses Effects of wastewater disinfection on waterborne bacteria and viruses
Wastewater disinfection is practiced with the goal of reducing risks of human exposure to pathogenic microorganisms. In most circumstances, the efficacy of a wastewater disinfection process is regulated and monitored based on measurements of the responses of indicator bacteria. However, inactivation of indicator bacteria does not guarantee an acceptable degree of inactivation among other
Authors
E. R. Blatchley, W.-L. Gong, J.E. Alleman, J.B. Rose, D.E. Huffman, M. Otaki, J.T. Lisle
Microbial ecology in reef sediments of Biscayne National Park Microbial ecology in reef sediments of Biscayne National Park
No abstract available.
Authors
John T. Lisle, Chris Reich
Microbiology and public beach safety: integrated science for the protection of public health Microbiology and public beach safety: integrated science for the protection of public health
No abstract available.
Authors
Christine A. Kellogg, John T. Lisle
Perennial Antarctic lake ice: a refuge for cyanobacteria in an extreme environment Perennial Antarctic lake ice: a refuge for cyanobacteria in an extreme environment
No abstract available
Authors
J.C. Priscu, E.E. Adams, H.W. Paerl, C.H. Fritsen, J.E. Dore, J.T. Lisle, C.F. Wolf, Jill A. Mikucki
Comparison of fluorescence microscopy and solid-phase cytometry methods for counting bacteria in water Comparison of fluorescence microscopy and solid-phase cytometry methods for counting bacteria in water
Total direct counts of bacterial abundance are central in assessing the biomass and bacteriological quality of water in ecological and industrial applications. Several factors have been identified that contribute to the variability in bacterial abundance counts when using fluorescent microscopy, the most significant of which is retaining an adequate number of cells per filter to ensure...
Authors
John T. Lisle, Martin A. Hamilton, Alan R. Willse, Gordon A. McFeters
The occurrence of lysogenic bacteria and microbial aggregates in the lakes of the McMurdo Dry Valleys, Antarctica The occurrence of lysogenic bacteria and microbial aggregates in the lakes of the McMurdo Dry Valleys, Antarctica
The McMurdo Dry Valleys of Antarctica form the coldest and driest ecosystem on Earth. Within this region there are a number of perennially ice-covered (3–6 m thick) lakes that support active microbial assemblages and have a paucity of metazoans. These lakes receive limited allochthonous input of carbon and nutrients, and primary productivity is limited to only 6 months per year owing to...
Authors
J.T. Lisle, J.C. Priscu
Occurrence of microbial indicators and Clostridium perfringens in wastewater, water column samples, sediments, drinking water, and Weddell seal feces collected at McMurdo Station, Antarctica Occurrence of microbial indicators and Clostridium perfringens in wastewater, water column samples, sediments, drinking water, and Weddell seal feces collected at McMurdo Station, Antarctica
McMurdo Station, Antarctica, has discharged untreated sewage into McMurdo Sound for decades. Previous studies delineated the impacted area, which included the drinking water intake, by using total coliform and Clostridium perfringens concentrations. The estimation of risk to humans in contact with the impacted and potable waters may be greater than presumed, as these microbial indicators...
Authors
J.T. Lisle, J.J. Smith, D.D. Edwards, G.A. McFeters
Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice
Unique springs, discharging from the surface of an arctic glacier, release H2S and deposit native sulfur, gypsum, and calcite. The presence of sulfur in three oxidation states indicates a complex series of redox reactions. Physical and chemical conditions of the spring water and surrounding environment, as well as mineralogical and isotopic signatures, suggest biologically mediated...
Authors
Stephen E. Grasby, Carlton C. Allen, Teresa G. Longazo, John T. Lisle, Dale W. Griffin, Benoit Beauchamp
Science and Products
Filter Total Items: 38
Microbial and geochemical investigations of dissolved organic carbon and microbial ecology of native waters from the Biscayne and Upper Floridan Aquifers Microbial and geochemical investigations of dissolved organic carbon and microbial ecology of native waters from the Biscayne and Upper Floridan Aquifers
Groundwater resources in the United States are under ever-increasing demands for potable, irrigation, and recreational uses. Additionally, aquifer systems are being used or targeted for use as storage areas for treated surface waters and (or) groundwaters via injection (for example, aquifer storage and recovery). To date, the influence that the nutrients, including carbon, in the...
Authors
John T. Lisle, Ron W. Harvey, George R. Aiken, David W. Metge
Culture-independent characterization of bacterial communities associated with the cold-water coral Lophelia pertusa in the northeastern Gulf of Mexico Culture-independent characterization of bacterial communities associated with the cold-water coral Lophelia pertusa in the northeastern Gulf of Mexico
Bacteria are recognized as an important part of the total biology of shallow-water corals. Studies of shallow-water corals suggest that associated bacteria may benefit the corals by cycling carbon, fixing nitrogen, chelating iron, and producing antibiotics that protect the coral from other microbes. Cold-water or deep-sea corals have a fundamentally different ecology due to their...
Authors
Christina A. Kellogg, John T. Lisle, Julia P. Galkiewicz
Bacteriophage in polar inland waters Bacteriophage in polar inland waters
Bacteriophages are found wherever microbial life is present and play a significant role in aquatic ecosystems. They mediate microbial abundance, production, respiration, diversity, genetic transfer, nutrient cycling and particle size distribution. Most studies of bacteriophage ecology have been undertaken at temperate latitudes. Data on bacteriophages in polar inland waters are scant but...
Authors
Christin Sawstrom, John Lisle, A.M. Anesio, John C. Priscu, J. Laybourn-Parry
Identity and physiology of a new psychrophilic eukaryotic green alga, Chlorella sp., strain BI, isolated from a transitory pond near Bratina Island, Antarctica Identity and physiology of a new psychrophilic eukaryotic green alga, Chlorella sp., strain BI, isolated from a transitory pond near Bratina Island, Antarctica
Permanently low temperature environments are one of the most abundant microbial habitats on earth. As in most ecosystems, photosynthetic organisms drive primary production in low temperature food webs. Many of these phototrophic microorganisms are psychrophilic; however, functioning of the photosynthetic processes of these enigmatic psychrophiles (the 'photopsychrophiles') in cold...
Authors
R. M. Morgan-Kiss, A.G. Ivanov, S. Modla, K. Czymmek, N.P.A. Huner, J.C. Priscu, J.T. Lisle, T.E. Hanson
Effects of wastewater disinfection on waterborne bacteria and viruses Effects of wastewater disinfection on waterborne bacteria and viruses
Wastewater disinfection is practiced with the goal of reducing risks of human exposure to pathogenic microorganisms. In most circumstances, the efficacy of a wastewater disinfection process is regulated and monitored based on measurements of the responses of indicator bacteria. However, inactivation of indicator bacteria does not guarantee an acceptable degree of inactivation among other
Authors
E. R. Blatchley, W.-L. Gong, J.E. Alleman, J.B. Rose, D.E. Huffman, M. Otaki, J.T. Lisle
Microbial ecology in reef sediments of Biscayne National Park Microbial ecology in reef sediments of Biscayne National Park
No abstract available.
Authors
John T. Lisle, Chris Reich
Microbiology and public beach safety: integrated science for the protection of public health Microbiology and public beach safety: integrated science for the protection of public health
No abstract available.
Authors
Christine A. Kellogg, John T. Lisle
Perennial Antarctic lake ice: a refuge for cyanobacteria in an extreme environment Perennial Antarctic lake ice: a refuge for cyanobacteria in an extreme environment
No abstract available
Authors
J.C. Priscu, E.E. Adams, H.W. Paerl, C.H. Fritsen, J.E. Dore, J.T. Lisle, C.F. Wolf, Jill A. Mikucki
Comparison of fluorescence microscopy and solid-phase cytometry methods for counting bacteria in water Comparison of fluorescence microscopy and solid-phase cytometry methods for counting bacteria in water
Total direct counts of bacterial abundance are central in assessing the biomass and bacteriological quality of water in ecological and industrial applications. Several factors have been identified that contribute to the variability in bacterial abundance counts when using fluorescent microscopy, the most significant of which is retaining an adequate number of cells per filter to ensure...
Authors
John T. Lisle, Martin A. Hamilton, Alan R. Willse, Gordon A. McFeters
The occurrence of lysogenic bacteria and microbial aggregates in the lakes of the McMurdo Dry Valleys, Antarctica The occurrence of lysogenic bacteria and microbial aggregates in the lakes of the McMurdo Dry Valleys, Antarctica
The McMurdo Dry Valleys of Antarctica form the coldest and driest ecosystem on Earth. Within this region there are a number of perennially ice-covered (3–6 m thick) lakes that support active microbial assemblages and have a paucity of metazoans. These lakes receive limited allochthonous input of carbon and nutrients, and primary productivity is limited to only 6 months per year owing to...
Authors
J.T. Lisle, J.C. Priscu
Occurrence of microbial indicators and Clostridium perfringens in wastewater, water column samples, sediments, drinking water, and Weddell seal feces collected at McMurdo Station, Antarctica Occurrence of microbial indicators and Clostridium perfringens in wastewater, water column samples, sediments, drinking water, and Weddell seal feces collected at McMurdo Station, Antarctica
McMurdo Station, Antarctica, has discharged untreated sewage into McMurdo Sound for decades. Previous studies delineated the impacted area, which included the drinking water intake, by using total coliform and Clostridium perfringens concentrations. The estimation of risk to humans in contact with the impacted and potable waters may be greater than presumed, as these microbial indicators...
Authors
J.T. Lisle, J.J. Smith, D.D. Edwards, G.A. McFeters
Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice
Unique springs, discharging from the surface of an arctic glacier, release H2S and deposit native sulfur, gypsum, and calcite. The presence of sulfur in three oxidation states indicates a complex series of redox reactions. Physical and chemical conditions of the spring water and surrounding environment, as well as mineralogical and isotopic signatures, suggest biologically mediated...
Authors
Stephen E. Grasby, Carlton C. Allen, Teresa G. Longazo, John T. Lisle, Dale W. Griffin, Benoit Beauchamp
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government