World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
37
Citations
7390
World Ranking
8789
National Ranking
3141

Craig R. Tobias publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Craig R. Tobias sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 102 publications — 14th percentile

14% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Craig R. Tobias D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Craig R. Tobias sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 37 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Craig R. Tobias is affiliated with the University of Connecticut in the United States. Their research spans Environmental Science and Earth and Planetary Sciences, with 34 and 18 publications respectively in these main fields of study.

The scientist focuses on several subfields, including Ecology, Oceanography, Geochemistry and Petrology, Health, Toxicology and Mutagenesis, and Environmental Chemistry. Their main research topics encompass Marine and coastal ecosystems, Coastal wetland ecosystem dynamics, Isotope Analysis in Ecology, Groundwater and Isotope Geochemistry, Microbial Community Ecology and Physiology, Soil and Water Nutrient Dynamics, and Wastewater Treatment and Nitrogen Removal.

Frequent co-authors collaborating with Craig R. Tobias include Bongkeun Song, Stephanie J. Wilson, Iris C. Anderson, Thivanka Ariyarathna, and Stephen Fallis.

Their publications are often featured in several scientific venues, notably the Journal of Geophysical Research Biogeosciences and The Science of The Total Environment, where they have published twice each. Other venues of publication include Limnology and Oceanography Methods, Limnology and Oceanography Letters, and Global Change Biology.

Recent papers authored or co-authored by Craig R. Tobias include:

  • A critical review of the 15N2 tracer method to measure diazotrophic production in pelagic ecosystems, 2020, Limnology and Oceanography Methods
  • Global subterranean estuaries modify groundwater nutrient loading to the ocean, 2024, Limnology and Oceanography Letters
  • High methane concentrations in tidal salt marsh soils: Where does the methane go?, 2023, Global Change Biology
  • Pelagic N2 fixation dominated by sediment diazotrophic communities in a shallow temperate estuary, 2021, Limnology and Oceanography
  • A grazing-driven positive nutrient feedback loop and active sexual reproduction underpin widespread Noctiluca green tides, 2022, ISME Communications

Best Publications

  • Denitrification across landscapes and waterscapes: a synthesis.

    Sybil P. Seitzinger;John A. Harrison;John K. Bohlke;A. F. Bouwman

  • The Importance of Dissimilatory Nitrate Reduction to Ammonium (DNRA) in the Nitrogen Cycle of Coastal Ecosystems

    Anne E. Giblin;Craig R. Tobias;Bongkeun Song;Nathaniel Weston

  • Hyporheic zone denitrification: Controls on effective reaction depth and contribution to whole-stream mass balance

    Judson W. Harvey;John Karl Böhlke;Mary A. Voytek;Durelle Scott

  • Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes

    Richard B. Alexander;John Karl Böhlke;Elizabeth W. Boyer;Mark B. David

  • The contamination of commercial 15N2 gas stocks with 15N-labeled nitrate and ammonium and consequences for nitrogen fixation measurements.

    Richard Dabundo;Moritz F. Lehmann;Lija Treibergs;Craig R. Tobias

  • Biogeographical distribution of diverse anaerobic ammonium oxidizing (anammox) bacteria in Cape Fear River Estuary

    Olivia R. Dale;Craig R. Tobias;Bongkeun Song

  • Co-occurring anammox, denitrification, and codenitrification in agricultural soils.

    Andrew Long;Joshua Heitman;Craig Tobias;Rebecca Philips

  • Tracking the fate of a high concentration groundwater nitrate plume through a fringing marsh: A combined groundwater tracer and in situ isotope enrichment study

    Craig R. Tobias;Stephen A. Macko;Iris C. Anderson;Elizabeth A. Canuel

  • Linking DNRA community structure and activity in a shallow lagoonal estuarine system.

    Bongkeun Song;Jessica A. Lisa;Craig R. Tobias

  • Nitrogen cycling through a fringing marsh-aquifer ecotone

    Craig R. Tobias;Iris C. Anderson;Elizabeth A. Canuel;Stephen A. Macko

  • Modeling denitrification in aquatic sediments

    Katja Fennel;Damian Brady;Dominic DiToro;Robinson W. Fulweiler

  • Hydrogeomorphology of the hyporheic zone: Stream solute and fine particle interactions with a dynamic streambed

    Judson W Harvey;Jennifer D Drummond;Raleigh L Martin;Lauren E McPhillips

  • Salt Marsh Biogeochemistry—An Overview

    Craig Tobias;Scott C. Neubauer

  • Effects of Hurricane Hugo (1989) on a coral reef in St. John, USVI

    CS Rogers;LN McLain;CR Tobias

  • Role of Anaerobic Ammonium Oxidation (Anammox) in Nitrogen Removal from a Freshwater Aquifer

    Richard L. Smith;J. K. Böhlke;Bongkeun Song;Craig R. Tobias

  • The oxygen-18 isotope approach for measuring aquatic metabolism in high productivity waters

    Craig R. Tobias;John Karl Böhlke;Judson W. Harvey

  • Nitrogen reduction pathways in estuarine sediments: Influences of organic carbon and sulfide

    Patrick Plummer;Craig Tobias;David Cady

  • A critical review of the 15 N 2 tracer method to measure diazotrophic production in pelagic ecosystems

    Angelicque E. White;Julie Granger;Corday Selden;Mary R. Gradoville

  • Development of a process-based nitrogen mass balance model for a Virginia (USA) Spartina alterniflora salt marsh:implications for net DIN flux

    Iris Cofman Anderson;Craig R. Tobias;Betty Berry Neikirk;Richard L. Wetzel

  • Quantifying groundwater discharge through fringing wetlands to estuaries: Seasonal variability, methods comparison, and implications for wetland‐estuary exchange

    Craig R. Tobias;Judson W. Harvey;Iris C. Anderson

  • Sediment DIN fluxes and preferential recycling of benthic microalgal nitrogen in a shallow macrotidal estuary

    Craig Tobias;Craig Tobias;Anne Giblin;James McClelland;Jane Tucker

Frequent Co-Authors

John Karl Böhlke
John Karl Böhlke United States Geological Survey
Judson W. Harvey
Judson W. Harvey United States Geological Survey
Iris C. Anderson
Iris C. Anderson Virginia Institute of Marine Science
Michael F. Piehler
Michael F. Piehler University of North Carolina at Chapel Hill
Elizabeth A. Canuel
Elizabeth A. Canuel Virginia Institute of Marine Science
Richard L. Smith
Richard L. Smith University of California, Riverside
Bruce J. Peterson
Bruce J. Peterson Marine Biological Laboratory
Sybil P. Seitzinger
Sybil P. Seitzinger University of Victoria
Stephen A. Macko
Stephen A. Macko University of Virginia
Mary A. Voytek
Mary A. Voytek National Aeronautics and Space Administration

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Related Online Degrees & Career Pathways

Pursuing a degree in Environmental Sciences can open doors to diverse career opportunities, but many students often consider related fields to complement their expertise. For those interested in understanding societal impacts on the environment, an accredited online bachelors in sociology provides valuable insights into human behavior and social systems, essential for effective environmental policy and advocacy.

For education professionals aiming to integrate environmental topics into curricula, advanced degrees like education doctoral programs without dissertation offer flexible pathways to leadership roles without the traditional dissertation requirement. Transition options such as eds to edd programs can also help educators deepen their expertise and influence environmental education strategies effectively.

Additionally, professionals working at the intersection of social work and environmental justice may find dsw programs particularly relevant. These programs prepare graduates to address complex social issues, including those related to environmental sustainability and community resilience, broadening the impact of environmental science careers.

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