Scientist Emeritus
443-482-2498
Specialty
Microbial Ecologist Research Labs
Staff Profile
Biography
Research Interests
I am a biogeochemist and microbial ecologist with special interest in mercury. My group focuses on the microbial mercury methylation process in cultures, sediments and soils. Our research includes mercury fate and transport at multiple scales and in many types of environments, isolation and characterization of Hg-methylating microbes, the bioavailability of Hg for microbial methylation, and novel approaches to remediation of contaminated sites.
Publications
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(2023). Transcriptional Control of hgcAB by an ArsR-Like Regulator in Pseudodesulfovibrio mercurii ND132 . Applied and Environmental Microbiology, 89 (4) http://dx.doi.org/10.1128/aem.01768-22
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(2022). A consensus protocol for the recovery of mercury methylation genes from metagenomes . Molecular Ecology Resources, http://dx.doi.org/10.1111/1755-0998.13687
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(2020). The assessment and remediation of mercury contaminated sites: A review of current approaches . Science of the Total Environment, 707 , Article 136031. http://dx.doi.org/10.1016/j.scitotenv.2019.136031
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(2018). Carbon Amendments Alter Microbial Community Structure and Net Mercury Methylation Potential in Sediments . Applied and Environmental Microbiology, 84 (3) , UNSP e01049-17-UNSP e01049-17. http://dx.doi.org/10.1128/AEM.01049-17
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(2018). Challenges and opportunities for managing aquatic mercury pollution in altered landscapes . Ambio, 47 (2) , 141-169. http://dx.doi.org/10.1007/s13280-017-1006-7
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(2018). Persistent Reductions in the Bioavailability of PCBs at a Tidally Inundated Phragmites australis Marsh Amended with Activated Carbon . Environmental Toxicology and Chemistry, 37 (9) , 2496-2505. http://dx.doi.org/10.1002/etc.4186
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(2017). Sulfurization of Dissolved Organic Matter Increases Hg-Sulfide-Dissolved Organic Matter Bioavailability to a Hg-Methylating Bacterium. Environmental science & technology, 51 (16) , 9080-9088. http://dx.doi.org/10.1021/acs.est.7b02781
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(2014). MERCURY in the Anthropocene Ocean. Oceanography, 27 (1) , 76-87. http://dx.doi.org/10.5670/oceanog.2014.11
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(2014). Modeling Sulfate Transport and Distribution and Methylmercury Production Associated with Aquifer Storage and Recovery Implementation in the Everglades Protection Area. Sustainability of Water Quality and Ecology, 3/4 , 33-46. http://dx.doi.org/10.1016/j.swaqe.2014.11.004
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(2013). Draft Genome Sequences for Three Mercury-Methylating, Sulfate-Reducing Bacteria . Genome Announcements, 1 (4) , e00618-13. http://dx.doi.org/10.1128/genomeA.00618-13
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(2013). Evaluation of biochars and activated carbons for in situ remediation of sediments impacted with organics, mercury, and methylmercury . Environmental science & technology, 47 (23) , 13721-13729. http://dx.doi.org/10.1021/es403712q
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(2013). Effect of Dissolved Organic Matter Source and Character on Microbial Hg Methylation in Hg-S-DOM Solutions . Environmental science & technology, 47 (11) , 5746-5754. http://dx.doi.org/10.1021/es400414a
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(2012). Nutrient supply and mercury dynamics in marine ecosystems: A conceptual model . Environmental research, 119 (November) , 118-131. http://dx.doi.org/10.1016/j.envres.2012.05.002
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(2012). Dissolved organic matter enhances microbial mercury methylation under sulfidic conditions . Environmental Science & Technology, 46 (5) , 2715-2723. http://dx.doi.org/10.1021/es203658f