Joseph N. Ryan

11.5k total citations · 2 hit papers
105 papers, 9.3k citations indexed

About

Joseph N. Ryan is a scholar working on Environmental Engineering, Water Science and Technology and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Joseph N. Ryan has authored 105 papers receiving a total of 9.3k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Environmental Engineering, 36 papers in Water Science and Technology and 26 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Joseph N. Ryan's work include Groundwater flow and contamination studies (39 papers), Fecal contamination and water quality (26 papers) and Mercury impact and mitigation studies (20 papers). Joseph N. Ryan is often cited by papers focused on Groundwater flow and contamination studies (39 papers), Fecal contamination and water quality (26 papers) and Mercury impact and mitigation studies (20 papers). Joseph N. Ryan collaborates with scholars based in United States, Trinidad and Tobago and France. Joseph N. Ryan's co-authors include George R. Aiken, Menachem Elimelech, James E. Saiers, Philip M. Gschwend, Heileen Hsu‐Kim, Ronald W. Harvey, Markus Haitzer, Brett A. Poulin, Nathalie Tufenkji and Nicole M. DeNovio and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Environmental Science & Technology and Geochimica et Cosmochimica Acta.

In The Last Decade

Joseph N. Ryan

103 papers receiving 8.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Colloid mobilization and transport in groundwater

1996 928 citations Joseph N. Ryan, Menachem Elimelech profile →
Influence of Dissolved Organic Matter on the Environmental Fate of Metals, Nanoparticles, and Colloids

2011 731 citations George R. Aiken, Joseph N. Ryan et al. Environmental Science & Technology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Joseph N. Ryan United States	55	3.2k	3.0k	2.6k	2.0k	1.1k	105	9.3k
C. Annette Johnson Switzerland	40	3.5k 1.1×	982 0.3×	2.4k 0.9×	2.7k 1.3×	2.9k 2.6×	85	10.2k
Frederik Hammes Switzerland	61	3.1k 1.0×	2.0k 0.7×	4.8k 1.8×	2.9k 1.4×	711 0.6×	116	11.2k
Dan Lapworth United Kingdom	43	2.2k 0.7×	1.7k 0.6×	1.5k 0.6×	2.3k 1.1×	1.0k 0.9×	139	7.0k
Michèle Prévost Canada	50	2.3k 0.7×	919 0.3×	3.6k 1.4×	2.2k 1.1×	1.7k 1.5×	247	9.0k
Chongxuan Liu United States	58	1.2k 0.4×	3.0k 1.0×	939 0.4×	1.4k 0.7×	1.7k 1.5×	235	10.2k
Peter Dillon Australia	45	2.2k 0.7×	2.5k 0.8×	1.2k 0.4×	1.1k 0.5×	1.5k 1.3×	209	7.0k
Scott R. Yates United States	47	1.8k 0.6×	2.9k 1.0×	961 0.4×	2.2k 1.1×	572 0.5×	237	9.6k
Ronald W. Harvey United States	41	2.5k 0.8×	2.5k 0.8×	693 0.3×	915 0.5×	557 0.5×	86	5.3k
Michael Sander Switzerland	56	2.1k 0.7×	1.2k 0.4×	1.5k 0.6×	3.0k 1.5×	1.3k 1.1×	140	11.2k
Hiroaki Furumai Japan	40	1.4k 0.4×	1.4k 0.5×	1.7k 0.6×	1.9k 0.9×	552 0.5×	241	5.6k

Countries citing papers authored by Joseph N. Ryan

Since Specialization

Citations

This map shows the geographic impact of Joseph N. Ryan'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 Joseph N. Ryan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Joseph N. Ryan more than expected).

Fields of papers citing papers by Joseph N. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Joseph N. Ryan. 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 Joseph N. Ryan. The network helps show where Joseph N. Ryan may publish in the future.

Co-authorship network of co-authors of Joseph N. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of Joseph N. Ryan. A scholar is included among the top collaborators of Joseph N. Ryan 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 Joseph N. Ryan. Joseph N. Ryan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Matiasek, S. J., Charles N. Alpers, Julie A. Korak, et al.. (2024). Wildland–urban interface wildfire increases metal contributions to stormwater runoff in Paradise, California. Environmental Science Processes & Impacts. 26(4). 667–685. 5 indexed citations

Lackey, Greg, Harihar Rajaram, Owen A. Sherwood, et al.. (2021). Public data from three US states provide new insights into well integrity. Proceedings of the National Academy of Sciences. 118(14). 44 indexed citations

Stanish, Lee F., Owen A. Sherwood, Greg Lackey, et al.. (2020). Microbial and Biogeochemical Indicators of Methane in Groundwater Aquifers of the Denver Basin, Colorado. Environmental Science & Technology. 55(1). 292–303. 10 indexed citations

Barrett, Pamela M., et al.. (2018). Increased exposure of plankton to arsenic in contaminated weakly-stratified lakes. The Science of The Total Environment. 625. 1606–1614. 24 indexed citations

Rosenblum, James, Andrew W. Nelson, Bridger J. Ruyle, et al.. (2017). Temporal characterization of flowback and produced water quality from a hydraulically fractured oil and gas well. The Science of The Total Environment. 596-597. 369–377. 124 indexed citations

Rogers, Jessica, et al.. (2017). Inhibition of Biodegradation of Hydraulic Fracturing Compounds by Glutaraldehyde: Groundwater Column and Microcosm Experiments. Environmental Science & Technology. 51(17). 10251–10261. 25 indexed citations

Lackey, Greg, et al.. (2016). WELL INTEGRITY IN COLORADO'S DENVER-JULESBURG BASIN: CONVENTIONAL VS. UNCONVENTIONAL WELLS AND IMPLICATIONS FOR STRAY GAS MIGRATION. Abstracts with programs - Geological Society of America. 1 indexed citations

Webster, Jackson P., et al.. (2016). Estimating mercury emissions resulting from wildfire in forests of the Western United States. The Science of The Total Environment. 568. 578–586. 47 indexed citations

Oikonomou, Panagiotis D., et al.. (2016). Water acquisition and use during unconventional oil and gas development and the existing data challenges: Weld and Garfield counties, CO. Journal of Environmental Management. 181. 36–47. 13 indexed citations

10.

Ray, Chittaranjan, Ronald W. Harvey, David W. Metge, et al.. (2010). Comparison of transport and attachment behaviors of Cryptosporidium parvum oocysts and oocyst-sized microspheres being advected through three minerologically different granular porous media. Water Research. 44(18). 5334–5344. 23 indexed citations

11.

Gao, Bin, James E. Saiers, & Joseph N. Ryan. (2006). Pore‐scale mechanisms of colloid deposition and mobilization during steady and transient flow through unsaturated granular media. Water Resources Research. 42(1). 83 indexed citations

12.

Fosgate, Geoffrey T., Abiodun A. Adesiyun, David W. Hird, et al.. (2003). Estimation of receiver-operating characteristic curves to determine accuracy of a competitive enzyme-linked immunosorbent assay for the serodiagnosis of Brucella infection in domestic water buffalo (Bubalus bubalis) and cattle. American Journal of Veterinary Research. 64(1). 57–64. 16 indexed citations

13.

Fosgate, Geoffrey T., Abiodun A. Adesiyun, David W. Hird, et al.. (2003). Evaluation of brucellosis RB51 vaccine for domestic water buffalo (Bubalus bubalis) in Trinidad. Preventive Veterinary Medicine. 58(3-4). 211–225. 26 indexed citations

14.

Rampersad, Joanne, et al.. (2002). Molecular characterization of rabies virus isolates from Trinidad. Veterinary Microbiology. 87(2). 95–102. 10 indexed citations

15.

Fosgate, Geoffrey T., Abiodun A. Adesiyun, David W. Hird, et al.. (2002). Comparison of serologic tests for detection of Brucella infections in cattle and water buffalo (Bubalus bubalis). American Journal of Veterinary Research. 63(11). 1598–1605. 52 indexed citations

16.

Tufenkji, Nathalie, Joseph N. Ryan, & Menachem Elimelech. (2002). Peer Reviewed: The Promise of Bank Filtration. Environmental Science & Technology. 36(21). 422A–428A. 226 indexed citations

17.

Bunn, Rebecca A., et al.. (2002). Mobilization of Natural Colloids from an Iron Oxide-Coated Sand Aquifer: Effect of pH and Ionic Strength. Environmental Science & Technology. 36(3). 314–322. 59 indexed citations

18.

Clow, David W., et al.. (2001). Effect of basin physical characteristics on solute fluxes in nine alpine/subalpine basins, Colorado, USA. Hydrological Processes. 15(14). 2749–2769. 29 indexed citations

19.

Aiken, George R., et al.. (1998). Interactions of dissolved organic carbon with mercury in the Everglades, Florida. 38(2). 76–78. 2 indexed citations

20.

Maest, Ann S., David A. Crerar, Robert F. Stallard, & Joseph N. Ryan. (1990). Metal and nutrient behavior in the Raritan estuary, New Jersey, U.S.A.: The effect of multiple freshwater and industrial waste inputs. Chemical Geology. 81(1-2). 133–149. 7 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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