G. D. O’Mullan

2.6k total citations
33 papers, 1.6k citations indexed

About

G. D. O’Mullan is a scholar working on Ecology, Pollution and Oceanography. According to data from OpenAlex, G. D. O’Mullan has authored 33 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Ecology, 9 papers in Pollution and 9 papers in Oceanography. Recurrent topics in G. D. O’Mullan's work include Microbial Community Ecology and Physiology (13 papers), Indoor Air Quality and Microbial Exposure (7 papers) and Wastewater Treatment and Nitrogen Removal (7 papers). G. D. O’Mullan is often cited by papers focused on Microbial Community Ecology and Physiology (13 papers), Indoor Air Quality and Microbial Exposure (7 papers) and Wastewater Treatment and Nitrogen Removal (7 papers). G. D. O’Mullan collaborates with scholars based in United States, France and United Kingdom. G. D. O’Mullan's co-authors include Bess B. Ward, Andrew R. Juhl, Christopher Francis, M. Elias Dueker, Robert C. Vrijenhoek, Steven Hallam, Yong‐Jin Won, Richard A. Lutz, Paul S. Giller and Mark O. Gessner and has published in prestigious journals such as Environmental Science & Technology, PLoS ONE and The Science of The Total Environment.

In The Last Decade

G. D. O’Mullan

33 papers receiving 1.6k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
G. D. O’Mullan United States 24 926 527 507 263 251 33 1.6k
Olivier Pringault France 29 1.1k 1.1× 944 1.8× 610 1.2× 488 1.9× 217 0.9× 89 2.3k
Aixin Hou United States 25 672 0.7× 221 0.4× 233 0.5× 231 0.9× 173 0.7× 58 1.8k
Anthony A. Chariton Australia 26 1.2k 1.2× 217 0.4× 523 1.0× 450 1.7× 200 0.8× 81 2.0k
Kristin Steger Sweden 20 765 0.8× 536 1.0× 245 0.5× 102 0.4× 317 1.3× 24 1.7k
Marley J. Waiser Canada 23 535 0.6× 451 0.9× 410 0.8× 223 0.8× 99 0.4× 37 1.4k
Tarun Kumar De India 22 813 0.9× 507 1.0× 186 0.4× 144 0.5× 461 1.8× 61 1.8k
Keqiang Shao China 25 1.1k 1.1× 507 1.0× 330 0.7× 95 0.4× 173 0.7× 101 1.7k
Tom Berman Israel 23 523 0.6× 598 1.1× 266 0.5× 190 0.7× 118 0.5× 39 1.5k
Michael G. LaMontagne United States 15 672 0.7× 448 0.9× 199 0.4× 80 0.3× 172 0.7× 22 1.3k
Sabine U. Gerbersdorf Germany 22 560 0.6× 288 0.5× 369 0.7× 177 0.7× 71 0.3× 36 1.4k

Countries citing papers authored by G. D. O’Mullan

Since Specialization
Citations

This map shows the geographic impact of G. D. O’Mullan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by G. D. O’Mullan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites G. D. O’Mullan more than expected).

Fields of papers citing papers by G. D. O’Mullan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by G. D. O’Mullan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by G. D. O’Mullan. The network helps show where G. D. O’Mullan may publish in the future.

Co-authorship network of co-authors of G. D. O’Mullan

This figure shows the co-authorship network connecting the top 25 collaborators of G. D. O’Mullan. A scholar is included among the top collaborators of G. D. O’Mullan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with G. D. O’Mullan. G. D. O’Mullan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Phillips, Patrick J., et al.. (2019). Bacterial quality of groundwater downgradient of onsite wastewater disposal systems and the influence on eastern Long Island's embayments. Marine Pollution Bulletin. 150. 110598–110598. 2 indexed citations
2.
Brigham, Brian A., et al.. (2019). Anthropogenic inputs from a coastal megacity are linked to greenhouse gas concentrations in the surrounding estuary. Limnology and Oceanography. 64(6). 2497–2511. 30 indexed citations
3.
O’Mullan, G. D., et al.. (2018). Patterns of sediment-associated fecal indicator bacteria in an urban estuary: Benthic-pelagic coupling and implications for shoreline water quality. The Science of The Total Environment. 656. 1168–1177. 31 indexed citations
4.
Dueker, M. Elias, et al.. (2018). Comparison of Bacterial Diversity in Air and Water of a Major Urban Center. Frontiers in Microbiology. 9. 2868–2868. 31 indexed citations
5.
Cantwell, Mark G., David R. Katz, Julia C. Sullivan, et al.. (2017). Spatial patterns of pharmaceuticals and wastewater tracers in the Hudson River Estuary. Water Research. 137. 335–343. 109 indexed citations
6.
O’Mullan, G. D., M. Elias Dueker, & Andrew R. Juhl. (2017). Challenges to Managing Microbial Fecal Pollution in Coastal Environments: Extra-Enteric Ecology and Microbial Exchange Among Water, Sediment, and Air. Current Pollution Reports. 3(1). 1–16. 27 indexed citations
7.
O’Mullan, G. D., M. Elias Dueker, Qiang Yang, et al.. (2015). Microbial Stimulation and Succession following a Test Well Injection Simulating CO₂ Leakage into a Shallow Newark Basin Aquifer. PLoS ONE. 10(1). e0117812–e0117812. 18 indexed citations
8.
Yang, Qiang, Juerg Matter, M. Stute, et al.. (2014). Groundwater hydrogeochemistry in injection experiments simulating CO2 leakage from geological storage reservoir. International journal of greenhouse gas control. 26. 193–203. 31 indexed citations
9.
Francis, Christopher, G. D. O’Mullan, Jeffrey C. Cornwell, & Bess B. Ward. (2013). Transitions in nirS-type denitrifier diversity, community composition, and biogeochemical activity along the Chesapeake Bay estuary. Frontiers in Microbiology. 4. 237–237. 74 indexed citations
10.
Yang, Qingqing, Gilles Guèrin, M. Stute, et al.. (2012). Groundwater geochemistry in field injection and lab incubation experiments simulating CO2 leakage into shallow aquifers in Newark Basin. AGU Fall Meeting Abstracts. 2012. 1 indexed citations
11.
Dueker, M. Elias, G. D. O’Mullan, Kathleen C. Weathers, Andrew R. Juhl, & María Uriarte. (2012). Coupling of fog and marine microbial content in the near-shore coastal environment. Biogeosciences. 9(2). 803–813. 29 indexed citations
12.
Suter, Elizabeth A., Andrew R. Juhl, & G. D. O’Mullan. (2011). Particle Association of Enterococcus and Total Bacteria in the Lower Hudson River Estuary, USA. Journal of Water Resource and Protection. 3(10). 715–725. 25 indexed citations
13.
Bouskill, Nicholas, Damien Eveillard, G. D. O’Mullan, George A. Jackson, & Bess B. Ward. (2010). Seasonal and annual reoccurrence in betaproteobacterial ammonia‐oxidizing bacterial population structure. Environmental Microbiology. 13(4). 872–886. 29 indexed citations
14.
Jayakumar, Amal, G. D. O’Mullan, S.W.A. Naqvi, & Bess B. Ward. (2009). Denitrifying Bacterial Community Composition Changes Associated with Stages of Denitrification in Oxygen Minimum Zones. Microbial Ecology. 58(2). 350–362. 92 indexed citations
15.
Ward, Bess B. & G. D. O’Mullan. (2005). Community Level Analysis: Genetic and Biogeochemical Approaches to Investigate Community Composition and Function in Aerobic Ammonia Oxidation. Methods in enzymology on CD-ROM/Methods in enzymology. 397. 395–413. 12 indexed citations
16.
Francis, Christopher, G. D. O’Mullan, & Bess B. Ward. (2003). Diversity of ammonia monooxygenase (amoA) genes across environmental gradients in Chesapeake Bay sediments. Geobiology. 1(2). 129–140. 150 indexed citations
17.
Won, Yong‐Jin, Steven Hallam, G. D. O’Mullan, & Robert C. Vrijenhoek. (2003). Cytonuclear disequilibrium in a hybrid zone involving deep‐sea hydrothermal vent mussels of the genus Bathymodiolus. Molecular Ecology. 12(11). 3185–3190. 36 indexed citations
18.
O’Mullan, G. D., et al.. (2001). A hybrid zone between hydrothermal vent mussels (Bivalvia: Mytilidae) from the Mid‐Atlantic Ridge. Molecular Ecology. 10(12). 2819–2831. 49 indexed citations
19.
O’Mullan, G. D., et al.. (2001). A hybrid zone between hydrothermal vent mussels (Bivalvia: Mytilidae) from the Mid-Atlantic Ridge. Molecular Ecology. 10(12). 2819–2831. 11 indexed citations
20.
O’Mullan, G. D., et al.. (1999). Genetic and Morphometric Characterization of Mussels (Bivalvia: Mytilidae) From Mid-Atlantic Hydrothermal Vents. Biological Bulletin. 196(3). 265–272. 37 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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