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Kuhl, Michael

Dr. Michael Kuhl

Department of Biology
University of Copenhagen
Helsingoer, Outside the U.S.

Microenvironmental Ecology of Hot Spring Microbial Mats

Methods: Use of microsensors and advanced imaging techniques to monitor and map in situ physico-chemical microgradients, spatial organization and activity of microorganisms in hot spring microbial mats.

Current study sites:
Octopus Spring, Mushroom Spring, Nymph Creek, "Bath Lake Vista Annex"

Long-term collaborator in Yellowstone Park: Prof. David M. Ward, MSU, Bozeman


  1. Candidatus Thermochlorobacter aerophilum: an aerobic chlorophotoheterotrophic member of the phylum Chlorobi defined by metagenomics and metatranscriptomics.
    International Society for Microbial Ecology Journal (ISME), 2012
  2. Community ecology of hot spring cyanobacterial mats: predominant populations and their functional potential.
    International Society for Microbial Ecology Journal (ISME), 2011
  3. Relative Importance of H2 and H2S as Energy Sources for Primary Production in Geothermal Springs
    Applied and Environmental Microbiology, 2008
  4. Regulation of nif gene expression and the energetics of N2 fixation over the diel cycle in a hot spring microbial mat
    International Society for Microbial Ecology Journal (ISME), 2008
  5. Genomics, environmental genomics and the issue of microbial species
    Heredity, 2008
  6. In situ analysis of nitrogen fixation and metabolic switching in unicellular thermophilic cyanobacteria inhabiting hot spring microbial mats
    Proceedings of the National Academy of Sciences, 2006
  7. Cyanobacterial ecotypes in the microbial mat community of Mushroom Spring (Yellowstone National Park, Wyoming) as species-like units linking microbial community composition, structure and function
    Philosophical Transactions of the Royal Society B, 2006
  8. Algal Species and Light Microenvironment in a Low-pH, Geothermal Microbial Mat Community
    Applied and Environmental Microbiology, 2005
  9. Diel Variations in Carbon Metabolism by Green Nonsulfur-Like Bacteria in Alkaline Siliceous Hot Spring Microbial Mats from Yellowstone National Park
    Applied and Environmental Microbiology, 2005
  10. Cyanobacterial Ecotypes in Different Optical Microenvironments of a 68°C Hot Spring Mat Community Revealed by 16S-23S rRNA Internal Transcribed Spacer Region Variation
    Applied and Environmental Microbiology, 2003
  11. Microbially mediated sulphide production in a thermal, acidic algal mat community in Yellowstone National Park
    Environmental Microbiology, 2003
  12. Microscopic Examination of Distribution and Phenotypic Properties of Phylogenetically Diverse Chloroflexaceae-Related Bacteria in Hot Spring Microbial Mats
    Applied and Environmental Microbiology, 2003