[et_pb_section fb_built=”1″ admin_label=”section” _builder_version=”4.16″ global_colors_info=”{}”][et_pb_row column_structure=”2_3,1_3″ _builder_version=”4.17.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”2_3″ _builder_version=”4.17.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-content\/uploads\/sites\/124\/2026\/03\/GOM-2023-300×300.jpg” alt=”Gregory O’Mullan” title_text=”GOM 2023″ align=”center” _builder_version=”4.27.4″ _module_preset=”default” hover_enabled=”0″ border_width_all=”1px” border_color_all=”#000000″ box_shadow_style=”preset2″ global_colors_info=”{}” sticky_enabled=”0″][\/et_pb_image][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ text_orientation=”center” global_colors_info=”{}”]<\/p>\n
Professor and Chairman, School of Earth and Environmental Sciences<\/strong> Science Building, Room E216 [\/et_pb_text][et_pb_text ul_position=”inside” _builder_version=”4.17.6″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ global_colors_info=”{}”]<\/p>\n Environmental Microbiology and Water Resource Management.<\/strong>\u00a0My research focuses upon the microbial ecology of aquatic environments. The microbial communities are studied in order to:<\/p>\n [\/et_pb_text][et_pb_text ul_position=”inside” _builder_version=”4.17.6″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ global_colors_info=”{}”]<\/p>\n Includes studies of:<\/p>\n View data from my\u00a0Hudson River water quality study<\/a><\/p>\n [\/et_pb_text][et_pb_text ul_position=”inside” _builder_version=”4.27.4″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ global_colors_info=”{}”]<\/p>\n Hudson River Foundation, Riverkeeper, US Environmental Protection Agency, National Science Foundation, Eppley Foundation, The Lily Auchincloss Foundation, New York Seagrant, and Sloan Foundation.<\/p>\n <\/p>\n [\/et_pb_text][et_pb_text ul_position=”inside” disabled_on=”on|on|on” _builder_version=”4.17.3″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ disabled=”on” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_text ul_position=”inside” disabled_on=”on|on|on” _builder_version=”4.17.3″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ disabled=”on” global_colors_info=”{}”]<\/p>\n Undergraduate<\/strong><\/p>\n Graduate<\/strong><\/p>\n [\/et_pb_text][et_pb_text ul_position=”inside” disabled_on=”on|on|on” _builder_version=”4.17.3″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ disabled=”on” global_colors_info=”{}”]<\/p>\n Representative Publications (see resume linked above for complete list):<\/u><\/strong><\/p>\n O\u2019Mullan, G.D., A.R. Juhl, R. Reichert, E. Schneider, and N. Martinez. 2019. Patterns of sediment-associated fecal indicator bacteria in an urban estuary: benthic-pelagic coupling and implications for shoreline water quality.\u00a0 Science of the Total Environment. 656:1168-1177. <\/span><\/p>\n Dueker, M.E., S.\u00a0 French, and G.D. O<\/span>\u2019<\/span>Mullan.\u00a0 2018. Comparison of bacterial diversity in air and water of a major urban center. Frontiers in Microbiology. <\/span>https:\/\/doi.org\/10.3389\/fmicb.2018.02868\u200b<\/a><\/span><\/p>\n O\u2019Mullan, G.D., T.T. Eaton, and M.E. Dueker. 2018.\u00a0Single-indicator strategies treat symptoms, not sources of sewage contamination, hampering water quality improvement in urban areas.\u00a0 Current Pollution Reports doi.org\/10.1007\/s40726-018-0099-3<\/a><\/p>\n Brigham, B., A. Montero, G. D. O\u2019Mullan, J. Bird.\u00a0 2018. Acetate additions stimulate CO2\u00a0<\/sub>and CH4\u00a0<\/sub>production from urban wetland soils.\u00a0 Soil Science Society of America Journal.\u00a0doi: 10.2136\/sssaj2018.01.0034<\/p>\n O\u2019Mullan, G.D., M.E. Dueker, and A. Juhl. 2017. Challenges to managing microbial fecal pollution in coastal environments: extra-enteric ecology and microbial exchange among water, sediment, and air.\u00a0 Current Pollution Reports.\u00a0 doi: 10.1007\/s40726-016-0047-z.<\/p>\n Cantwell, M.G., D.R. Katz, J.C. Sullivan, D. Shapley, J. Lipscomb, J.Epstein, A.R. Juhl, C. Knudson, G.D. O\u2019Mullan.\u00a0 2017.\u00a0 Spatial Patterns of pharmaceuticals and wastewater tracers in the Hudson River Estuary.\u00a0 Water Research. \u00a0\u00a0doi.org\/10.1016\/j.watres.2017.12.044<\/a><\/p>\n Dueker, M.E.; O\u2019Mullan, G.D.; Mart\u00ednez, J.M.; Juhl, A.R.; Weathers, K.C. Onshore Wind Speed Modulates Microbial Aerosols along an Urban Waterfront. Atmosphere 2017, 8<\/em>, 215.\u00a0\u00a0 doi.10.3390\/atmos8110215.<\/p>\n Montero, A. M.E. Dueker, and G.D. O\u2019Mullan.\u00a0 2016. Culturable bioaerosols along an urban waterfront are primarily associated with coarse particles. PeerJ.\u00a0 4:e2827; DOI 10.7717\/peerj.2827.<\/p>\n O\u2019Mullan, G.D., M.E. Dueker, K. Clauson, Q. Yang, K. Umemoto, N. Zakharova, J. Matter, M. Stute, T. Takahashi, and D. Goldberg.\u00a0 2015. Microbial succession and stimulation following a test well injection simulating CO2<\/sub>leakage into a shallow Newark Basin aquifer.\u00a0 PLoS ONE 10(1): e0117812. doi:10.1371\/journal.pone.0117812.<\/p>\n Yang, Q., J. Matter, T. Takahashi, M. Stute, G.D. O\u2019Mullan, K. Clauson, K. Umemoto, D. Goldberg.\u00a0 2015.\u00a0\u00a0 Groundwater geochemistry in bench experiments simulating CO2<\/sub>leakage from geological storage in the Newark Basin. International Journal of Greenhouse Gas Control 42:98-108.<\/p>\n Afshinnekoo, E., et al.\u00a0 2015. Geospatial Resolution of Human and Bacterial Diversity with City-Scale Metagenomics, Cell Systems, ISSN 2405-4712, http:\/\/dx.doi.org\/10.1016\/j.cels.2015.01.001<\/a>.<\/p>\n Yang, Q., J. Matter, M. Stute, K. Umemoto, K. Clauson, M.E. Dueker, G.D. O\u2019Mullan, T. Takahashi, N. Zakharova, D. Goldberg.\u00a0 2014.\u00a0 Groundwater hydrogeochemistry in injection experiments simulating CO2 leakage from a geological storage reservoir. International Journal of Greenhouse Gas Control. 26:193-203.<\/p>\n Dueker, M.E. and G.D. O\u2019Mullan. 2014. Aeration remediation of a polluted waterway increases near-surface coarse and culturable microbial aerosols. Science of the Total Environment. 478:184-189.<\/p>\n Young, S., A. Juhl, and G. O\u2019Mullan. 2013. Antibiotic resistant bacteria in the Hudson River Estuary linked to wet weather sewage contamination. Journal of Water and Health. 11(2):297-310.<\/p>\n Francis, C.A., G.D. O\u2019Mullan, J.C. Cornwell, B.B. Ward. 2013. Transitions in nirS-type denitrifier diversity, community composition, and biogeochemical activity along the Chesapeake Bay Estuary. Frontiers in Aquatic Microbiology. 4(237):1-12.<\/p>\n Dueker, M.E., G. O\u2019Mullan, A. Juhl, K. Weathers,. and M. Uriarte. 2012. Local environmental pollution strongly influences culturable bacterial aerosols at an urban aquatic superfund site. Environmental Science and Technology 46(20):10926-10933.<\/p>\n Bouskill, N., D. Eveillard, G. O\u2019Mullan, J. Jackson, and B. B. Ward. 2011. Seasonal and annual reoccurrence patterns in ammonia-oxidizing bacterial population structure. Environmental Microbiology 13(4):872-886.<\/p>\n Jayakumar, A., G.D. O\u2019Mullan, S.W.A. Naqvi, and B.B. Ward. 2009. Denitrifying bacterial community composition associated with the stages of denitrification in oxygen minimium zones. Microbial Ecology 58(2):350-362.<\/p>\n Foster, R. and G. D. O\u2019Mullan. 2008. Chapter 27-Nitrogen fixing and nitrifying symbioses in the marine environment. Pages 1197-1218. In: Nitrogen in the Marine Environment, 2nd edition. Edited by D. G. Capone, D. A. Bronk, M. R. Mulholland, and E. J. Carpenter. (2008)<\/p>\n O\u2019Mullan, G.D., and B.B. Ward. 2005. Comparison of temporal and spatial variation of ammonia oxidizing bacteria and nitrification rates in Monterey Bay, CA. Applied and Environmental Microbiology 71(2): 697-705.<\/p>\n Ward B. B. and G. D. O\u2019Mullan. 2005. Community-level analysis: aerobic ammonia oxidation activity measurements and gene analysis. Methods in Enzymology 397: 395-413.<\/p>\n Giller, P., H. Hillebrand, U.K. Berninger, M.O. Gessner, S. Hawkins, P. Inchausti, C. Inglis, H. Leslie, B. Malmqvist, M. Monaghan, P J. Morin, and G.D. O\u2019Mullan. 2004. Biodiversity effects on ecosystem functioning: emerging issues and their experimental test in aquatic environments. Oikos 104: 423-436.\u200b<\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.17.1″ _module_preset=”default” custom_padding=”|||20px|false|false” custom_padding_tablet=”20px|||0px|false|false” custom_padding_phone=”20px|||0px|false|false” custom_padding_last_edited=”on|desktop” border_width_left=”1px” border_width_top_tablet=”1px” border_width_top_phone=”1px” border_width_top_last_edited=”on|desktop” border_width_left_tablet=”0px” border_width_left_phone=”0px” border_width_left_last_edited=”on|desktop” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” text_font=”Open Sans||||||||” text_font_size=”16px” header_4_font=”Open Sans|600|||on||||” header_4_text_color=”#E71939″ locked=”off” global_colors_info=”{}”]<\/p>\n Gregory O’Mullan<\/a> <\/p>\n <\/p>\n <\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" Gregory O’Mullan Professor and Chairman, School of Earth and Environmental SciencesEnvironmental Microbiology Science Building, Room E216Phone: 718-997-3452Gregory.OMullan@qc.cuny.eduResearch Interests: Environmental Microbiology and Water Resource Management.\u00a0My research focuses upon the microbial ecology of aquatic environments. The microbial communities are studied in order to: Understand the variation and regulation of biogeochemical functioning in aquatic environments; Understand the interaction […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"page_category":[],"wf_page_folders":[],"class_list":["post-3761","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/pages\/3761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/comments?post=3761"}],"version-history":[{"count":0,"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/pages\/3761\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/media?parent=3761"}],"wp:term":[{"taxonomy":"page_category","embeddable":true,"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/page_category?post=3761"},{"taxonomy":"wf_page_folders","embeddable":true,"href":"https:\/\/www.qc.cuny.edu\/academics\/sees\/wp-json\/wp\/v2\/wf_page_folders?post=3761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Environmental Microbiology<\/p>\n
Phone: 718-997-3452
Gregory.OMullan@qc.cuny.edu<\/a><\/p>\nResearch Interests:<\/h4>\n
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Specific Interests:<\/h4>\n
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Sources of Current and Prior Research Support Include:<\/h4>\n
Additional Websites and Links<\/h4>\n
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College Service Includes:<\/h4>\n
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–\u00a0 MS in Applied Environmental Geo sciences
–\u00a0 MA in Geological and Environmental Sciences<\/li>\nCourses Taught:<\/h4>\n
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Faculty Listing<\/h4>\n
Stephen Pekar<\/a>
Jeffrey Bird<\/a>
William J. Blanford<\/a>
Jacquelyn Bracco<\/a>
Timothy Eaton<\/a>
Dianne I. Greenfield<\/a>
Marc-Antoine Longpre<\/a>
Alia Lesnek<\/a>
Cecilia M. McHugh<\/a>
Dax Soule<\/a>
Gillian Stewart<\/a>
Pedro Val<\/a>
<\/a>Chuixiang Yi<\/a>
Christine Ramadhin<\/a>
Dara Laczniak<\/a><\/p>\n