| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Environmental Sciences | 37 | 8883 | 8523 | 3185 | 2961 | 71 | 5608 |
The chart shows the history of publications by Donald E. Todd between 1977 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Donald E. Todd published across 48 years, from 1977 to 2024, averaging 1.5 papers a year. Output peaked at 8 publications in 2003. 1 of the 72 publications appeared in the last two years.
72 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1977 | 1 |
| 1978 | 0 |
| 1979 | 0 |
| 1980 | 1 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 2 |
| 1984 | 1 |
| 1985 | 0 |
| 1986 | 0 |
| 1987 | 2 |
| 1988 | 2 |
| 1989 | 1 |
| 1990 | 1 |
| 1991 | 3 |
| 1992 | 0 |
| 1993 | 3 |
| 1994 | 1 |
| 1995 | 1 |
| 1996 | 1 |
| 1997 | 0 |
| 1998 | 5 |
| 1999 | 1 |
| 2000 | 0 |
| 2001 | 4 |
| 2002 | 3 |
| 2003 | 8 |
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 1 |
| 2007 | 6 |
| 2008 | 6 |
| 2009 | 1 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 2 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 0 |
| 2016 | 1 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 1 |
| Total | 72 |
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 Donald E. Todd sits on this spectrum.
This scientist: 71 publications — 2nd percentile
2% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 690 publications or more.
| Publications | Scientists | This scientist |
|---|---|---|
| 41–50 | 21 | |
| 51–60 | 62 | |
| 61–70 | 133 | |
| 71–80 | 257 | 71 |
| 81–90 | 361 | |
| 91–100 | 440 | |
| 101–110 | 492 | |
| 111–120 | 541 | |
| 121–130 | 617 | |
| 131–140 | 544 | |
| 141–150 | 541 | |
| 151–160 | 539 | |
| 161–170 | 444 | |
| 171–180 | 444 | |
| 181–190 | 400 | |
| 191–200 | 377 | |
| 201–210 | 318 | |
| 211–220 | 282 | |
| 221–230 | 263 | |
| 231–240 | 220 | |
| 241–250 | 217 | |
| 251–260 | 180 | |
| 261–270 | 181 | |
| 271–280 | 155 | |
| 281–290 | 130 | |
| 291–300 | 127 | |
| 301–310 | 130 | |
| 311–320 | 85 | |
| 321–330 | 106 | |
| 331–340 | 80 | |
| 341–350 | 83 | |
| 351–360 | 75 | |
| 361–370 | 69 | |
| 371–380 | 52 | |
| 381–390 | 54 | |
| 391–400 | 56 | |
| 401–410 | 44 | |
| 411–420 | 40 | |
| 421–430 | 36 | |
| 431–440 | 25 | |
| 441–450 | 25 | |
| 451–460 | 32 | |
| 461–470 | 29 | |
| 471–480 | 21 | |
| 481–490 | 26 | |
| 491–500 | 26 | |
| 501–510 | 17 | |
| 511–520 | 19 | |
| 521–530 | 15 | |
| 531–540 | 22 | |
| 541–550 | 12 | |
| 551–560 | 15 | |
| 561–570 | 11 | |
| 571–580 | 19 | |
| 581–590 | 9 | |
| 591–600 | 9 | |
| 601–610 | 7 | |
| 611–620 | 11 | |
| 621–630 | 5 | |
| 631–640 | 5 | |
| 641–650 | 6 | |
| 651–660 | 3 | |
| 661–670 | 3 | |
| 671–680 | 4 | |
| 681–689 | 4 | |
| 690+ | 100 |
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 Donald E. Todd sits on this spectrum.
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 126 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 30 | 12 | |
| 31 | 26 | |
| 32 | 51 | |
| 33 | 88 | |
| 34 | 123 | |
| 35 | 163 | |
| 36 | 206 | |
| 37 | 267 | 37 |
| 38 | 265 | |
| 39 | 275 | |
| 40 | 321 | |
| 41 | 343 | |
| 42 | 305 | |
| 43 | 336 | |
| 44 | 330 | |
| 45 | 348 | |
| 46 | 291 | |
| 47 | 275 | |
| 48 | 272 | |
| 49 | 273 | |
| 50 | 263 | |
| 51 | 232 | |
| 52 | 266 | |
| 53 | 217 | |
| 54 | 198 | |
| 55 | 177 | |
| 56 | 202 | |
| 57 | 204 | |
| 58 | 166 | |
| 59 | 177 | |
| 60 | 166 | |
| 61 | 152 | |
| 62 | 143 | |
| 63 | 150 | |
| 64 | 124 | |
| 65 | 119 | |
| 66 | 120 | |
| 67 | 118 | |
| 68 | 82 | |
| 69 | 98 | |
| 70 | 94 | |
| 71 | 105 | |
| 72 | 74 | |
| 73 | 84 | |
| 74 | 70 | |
| 75 | 67 | |
| 76 | 78 | |
| 77 | 60 | |
| 78 | 59 | |
| 79 | 52 | |
| 80 | 47 | |
| 81 | 38 | |
| 82 | 48 | |
| 83 | 42 | |
| 84 | 42 | |
| 85 | 43 | |
| 86 | 29 | |
| 87 | 37 | |
| 88 | 29 | |
| 89 | 30 | |
| 90 | 34 | |
| 91 | 20 | |
| 92 | 22 | |
| 93 | 17 | |
| 94 | 19 | |
| 95 | 24 | |
| 96 | 21 | |
| 97 | 20 | |
| 98 | 24 | |
| 99 | 17 | |
| 100 | 17 | |
| 101 | 21 | |
| 102 | 25 | |
| 103 | 18 | |
| 104 | 26 | |
| 105 | 20 | |
| 106 | 15 | |
| 107 | 10 | |
| 108 | 13 | |
| 109 | 15 | |
| 110 | 12 | |
| 111 | 8 | |
| 112 | 7 | |
| 113 | 9 | |
| 114 | 6 | |
| 115 | 12 | |
| 116 | 7 | |
| 117 | 8 | |
| 118 | 3 | |
| 119 | 5 | |
| 120 | 7 | |
| 121 | 2 | |
| 122 | 4 | |
| 123 | 8 | |
| 124 | 7 | |
| 125 | 9 | |
| 126+ | 92 |
Donald E. Todd is a researcher affiliated with Oak Ridge National Laboratory in the United States. Their work spans multiple fields within environmental and earth sciences, focusing significantly on isotope applications and geochemical processes.
Their primary fields of study include Environmental Science and Earth and Planetary Sciences, with specific subfields in Ecology, Geochemistry and Petrology, and Global and Planetary Change. These areas reflect a multidisciplinary approach to understanding environmental systems and isotope behavior in natural contexts.
Donald E. Todd's research extensively covers topics such as Isotope Analysis in Ecology, Groundwater and Isotope Geochemistry, and Radioactive Contamination and Transfer. These topics indicate a focus on tracing chemical and isotopic signatures within ecosystems and environmental compartments, alongside considerations of contamination pathways.
Their recent publication is titled "Enriched Background Isotope Study (EBIS): Analysis of 14C-Enriched Carbon Cycle in Soils and Litter at Forested Oak Ridge and AmeriFlux Sites, 2001-2011", published in 2024 by OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). This paper reflects engagement with long-term ecological studies involving carbon cycle isotopes, highlighting an interest in environmental carbon dynamics over time.
Frequent coauthors collaborating with Donald E. Todd include:
Publications are predominantly found in venues such as OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information), indicating a connection to research supported or shared by government scientific repositories.
P. J. Hanson;S. D. Wullschleger;S. A. Bohlman;D. E. Todd
D. Obrist;D. W. Johnson;S. E. Lindberg;Y. Luo
Stan D Wullschleger;P.J Hanson;D.E Todd
Dale W. Johnson;D. E. Todd
Richard J. Norby;Donald E. Todd;Jason Fults;Dale W. Johnson
D. W. Johnson;D. E. Todd
D. W. Johnson;Helga Van Miegroet;S. E. Lindberg;R. B. Harrison
Paul J. Hanson;Donald E. Todd;Jeffrey S. Amthor
Robert B. Harrison;Dale W. Johnson;Don E. Todd
V.R Tolbert;D.E Todd;L.K Mann;C.M Jawdy
Timothy J. Tschaplinski;Gerald A. Tuskan;G. Michael Gebre;Donald E. Todd
D. W. Johnson;W. Cheng;J. D. Joslin;R. J. Norby
D. W. Johnson;D. C. West;D. E. Todd;L. K. Mann
G.V. Wilson;P.M. Jardine;R.J. Luxmoore;L.W. Zelazny
D. W. Johnson;D. E. Todd
Dale W. Johnson;Gray S. Henderson;Donald E. Todd
Stan D. Wullschleger;Paul J. Hanson;Donald E. Todd
D. D. Richter;D. W. Johnson;D. E. Todd
M. Fröberg;P. M. Jardine;P. J. Hanson;C. W. Swanston
D. W. Johnson;G. S. Henderson;D. D. Huff;S. E. Lindberg
D. W. Johnson;D. E. Todd
Carl C. Trettin;D.W. Johnson;D.E. Todd
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