World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 50 2083 1916 540 472 290 32139

Robert P. Adams publications per year

The chart shows the history of publications by Robert P. Adams between 1958 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert P. Adams published across 68 years, from 1958 to 2025, averaging 4.8 papers a year. Output peaked at 16 publications in 2010. 2 of the 327 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1958 to 2025. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2010. 1958: 3 publications 1959: 1 publication 1960: 1 publication 1961: 0 publications 1962: 0 publications 1963: 3 publications 1964: 0 publications 1965: 0 publications 1966: 1 publication 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 3 publications 1971: 0 publications 1972: 2 publications 1973: 4 publications 1974: 3 publications 1975: 5 publications 1976: 5 publications 1977: 4 publications 1978: 0 publications 1979: 4 publications 1980: 3 publications 1981: 6 publications 1982: 4 publications 1983: 7 publications 1984: 5 publications 1985: 8 publications 1986: 5 publications 1987: 7 publications 1988: 1 publication 1989: 8 publications 1990: 10 publications 1991: 8 publications 1992: 5 publications 1993: 6 publications 1994: 5 publications 1995: 3 publications 1996: 6 publications 1997: 5 publications 1998: 9 publications 1999: 4 publications 2000: 4 publications 2001: 1 publication 2002: 3 publications 2003: 7 publications 2004: 5 publications 2005: 1 publication 2006: 6 publications 2007: 9 publications 2008: 10 publications 2009: 9 publications 2010: 16 publications 2011: 12 publications 2012: 14 publications 2013: 13 publications 2014: 16 publications 2015: 10 publications 2016: 6 publications 2017: 10 publications 2018: 4 publications 2019: 7 publications 2020: 5 publications 2021: 2 publications 2022: 0 publications 2023: 1 publication 2024: 0 publications 2025: 2 publications
1958 2025

327 publications in total across all disciplines

View publications per year as a table
Robert P. Adams: publications per year, 1958 to 2025
Year Publications
1958 3
1959 1
1960 1
1961 0
1962 0
1963 3
1964 0
1965 0
1966 1
1967 0
1968 0
1969 0
1970 3
1971 0
1972 2
1973 4
1974 3
1975 5
1976 5
1977 4
1978 0
1979 4
1980 3
1981 6
1982 4
1983 7
1984 5
1985 8
1986 5
1987 7
1988 1
1989 8
1990 10
1991 8
1992 5
1993 6
1994 5
1995 3
1996 6
1997 5
1998 9
1999 4
2000 4
2001 1
2002 3
2003 7
2004 5
2005 1
2006 6
2007 9
2008 10
2009 9
2010 16
2011 12
2012 14
2013 13
2014 16
2015 10
2016 6
2017 10
2018 4
2019 7
2020 5
2021 2
2022 0
2023 1
2024 0
2025 2
Total 327
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Robert P. Adams publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Robert P. Adams sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 286–290 publications, is where this scientist sits. 36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36–40 publications 467+

This scientist: 290 publications — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126
181–185 98
186–190 114
191–195 100
196–200 90
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33
281–285 35
286–290 36 290
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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Robert P. Adams D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Robert P. Adams sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 50 D-Index, is where this scientist sits. 30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 50 D-Index — 68th percentile

68% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122 50
51 122
52 110
53 102
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Overview

What is he best known for?

The fields of study he is best known for:

  • Botany
  • Ecology
  • Genus

Botany, Cupressaceae, Taxon, RAPD and Chromatography are his primary areas of study. As part of his studies on Botany, Robert P. Adams frequently links adjacent subjects like Hesperocyparis. The Cupressaceae study combines topics in areas such as Sabinene, Terpene, Juniperus oxycedrus and Juniperus scopulorum.

His Taxon study integrates concerns from other disciplines, such as Systematics, Chemotaxonomy and Genetics. His research in Chromatography intersects with topics in Guar, Polysaccharide, Identification and Carrageenan. His Identification research is multidisciplinary, incorporating perspectives in Mass spectrum, Elution, Chemical nomenclature, Gas chromatography–mass spectrometry and Essential oil.

His most cited work include:

  • Identification of Essential Oil Components By Gas Chromatography/Mass Spectrometry (2333 citations)
  • Identification of Essential Oils by Ion trap Mass Spectroscopy (900 citations)
  • Dynamic knee extension as model for study of isolated exercising muscle in humans. (339 citations)

What are the main themes of his work throughout his whole career to date?

Robert P. Adams spends much of his time researching Botany, Cupressaceae, Taxon, Horticulture and Terpenoid. Botany is closely attributed to Geographic variation in his work. His research integrates issues of Range, RAPD, Cedrol, Juniperus scopulorum and Systematics in his study of Cupressaceae.

His Taxon study combines topics from a wide range of disciplines, such as Juniper, Clade and Chemotaxonomy. His Terpenoid study frequently links to adjacent areas such as Terpene. Many of his studies on Essential oil apply to Monoterpene as well.

He most often published in these fields:

  • Botany (71.53%)
  • Cupressaceae (27.01%)
  • Taxon (16.06%)

What were the highlights of his more recent work (between 2010-2021)?

  • Botany (71.53%)
  • Horticulture (13.14%)
  • Taxon (16.06%)

In recent papers he was focusing on the following fields of study:

His primary scientific interests are in Botany, Horticulture, Taxon, Taxonomy and DNA sequencing. His studies in Botany integrate themes in fields like Range, Terpene and Geographic variation. The concepts of his Horticulture study are interwoven with issues in Composition, Citronellol, Myrcene, Sabinene and Essential oil.

His Taxon research focuses on Phylogenetic tree and how it connects with Phylogenetics and Evolutionary biology. Robert P. Adams works mostly in the field of Taxonomy, limiting it down to concerns involving Chloroplast DNA and, occasionally, Sequence analysis and Juniperus communis. His study in Cupressaceae is interdisciplinary in nature, drawing from both Taxodium and Introgression.

Between 2010 and 2021, his most popular works were:

  • Predominant and Substoichiometric Isomers of the Plastid Genome Coexist within Juniperus Plants and Have Shifted Multiple Times during Cupressophyte Evolution (67 citations)
  • Phylogeny of Juniperus using nrDNA and four cpDNA regions. (22 citations)
  • Phenolic Components and Antioxidant Activity of Wood Extracts from 10 Main Spanish Olive Cultivars. (17 citations)

In his most recent research, the most cited papers focused on:

  • Botany
  • Ecology
  • Genus

Robert P. Adams mainly investigates Botany, Taxon, Ecology, Evolutionary biology and Terpene. His Botany study integrates concerns from other disciplines, such as Range, Decanal and DNA sequencing. Robert P. Adams combines subjects such as Chloroplast DNA, Clade, Phylogenetic tree, Juniperus phoenicea and Sequence analysis with his study of Taxon.

Robert P. Adams interconnects Ordination, Citronellol, Terpenoid, Neutral Detergent Fiber and Animal science in the investigation of issues within Terpene. His study focuses on the intersection of Terpenoid and fields such as Horticulture with connections in the field of Essential oil, Extraction, Steam distillation and Sabinene. The concepts of his Animal science study are interwoven with issues in Negatively associated, Chemical composition, Juniper, Digestion and Nutrient.

Best Publications

  • Identification of Essential Oil Components By Gas Chromatography/Mass Spectrometry

    Robert P. Adams

  • Junipers of the world : the genus Juniperus

    Robert P. Adams

  • Water and ion shifts in skeletal muscle of humans with intense dynamic knee extension

    G. Sjogaard;R. P. Adams;B. Saltin

  • Dynamic knee extension as model for study of isolated exercising muscle in humans.

    P. Andersen;R. P. Adams;G. Sjogaard;A. Thorboe

  • Potential taxonomic use of random amplified polymorphic DNA (RAPD): a case study in Brassica.

    T. Demeke;R. P. Adams;R. Chibbar

  • The effects of plant polysaccharides and buffer additives on PCR.

    Demeke T;Adams Rp

  • Diversification and biogeography of Juniperus (Cupressaceae): variable diversification rates and multiple intercontinental dispersals

    Kangshan Mao;Kangshan Mao;Gang Hao;Jianquan Liu;Robert P. Adams

  • Cedar Wood Oil — Analyses and Properties

    R. P. Adams

  • Oxygen uptake, acid-base status, and performance with varied inspired oxygen fractions

    R. P. Adams;H. G. Welch

  • Inhibition of random amplified polymorphic DNAs (RAPDs) by plant polysaccharides

    Ram Naresh Pandey;Robert P. Adams;Lori E. Flournoy

  • Systematic relationships in Juniperus based on random amplified polymorphic DNAs (RAPDs).

    Robert P. Adams;Tigst Demeke

  • A simple technique for removing plant polysaccharide contaminants from DNA.

    N Do;R P Adams

  • Comparison of free sugars in growing and desiccated plants of Selaginella lepidophylla

    Robert P. Adams;E. Kendall;K.K. Kartha

  • THE LEAF ESSENTIAL OILS AND CHEMOTAXONOMY OF JUNIPERUS SECT. JUNIPERUS

    Robert P Adams

  • Statistical character weighting and similarity stability

    Robert P. Adams

  • Systematics of Juniperus section Juniperus based on leaf essential oils and random amplified polymorphic DNAs (RAPDs).

    Robert P Adams

  • The circumscription and phylogenetic relationships of Callitropsis and the newly described genus Xanthocyparis (Cupressaceae)

    Damon P. Little;Andrea E. Schwarzbach;Robert P. Adams;Chang-Fu Hsieh

  • Systematics of multi-seeded eastern hemisphere Juniperus based on leaf essential oils and RAPD DNA fingerprinting

    Robert P. Adams

  • Cryptic speciation between Juniperus deltoides and Juniperus oxycedrus (Cupressaceae) in the Mediterranean

    Robert P. Adams;Julie A. Morris;Ram N. Pandey;Andrea E. Schwarzbach

  • Predominant and Substoichiometric Isomers of the Plastid Genome Coexist within Juniperus Plants and Have Shifted Multiple Times during Cupressophyte Evolution

    Wenhu Guo;Felix Grewe;Amie Cobo-Clark;Weishu Fan

  • Seasonal variation of terpenoid constituents in natural populations of juniperus pinchotii sudw

    Robert P. Adams

  • SEASONAL VARIATION IN THE VOLATILE TERPENOIDS OF JUNIPERUS SCOPULORUM (CUPRESSACEAE)

    Robert P. Adams;Ann Hagerman

  • The concordance of terpenoid, ISSR and RAPD markers, and ITS sequence data sets among genotypes: an example from Juniperus

    Robert P. Adams;Andrea E. Schwarzbach;R.Naresh Pandey

  • IN SITU PRESERVATION OF DNA IN PLANT SPECIMENS

    Marla Meeth Pyle;Robert P. Adams

  • Effects drying and harvest season on the essential oil composition from foliage and berries of Juniperus excelsa

    Parvin Salehi Shanjani;Mehdi Mirza;Mohsen Calagari;Robert P. Adams

  • Termiticidal activities in the heartwood, bark/sapwood and leaves of Juniperus species from the United States

    R.P. Adams;C.A. McDaniel;F.L. Carter

  • Comparisons of the Leaf Essential Oils of Juniperus phoenicea, J. phoenicea subsp. eu-mediterranea Lebr. & Thiv. and J. phoenicea var. turbinata (Guss.) Parl.

    Robert P. Adams;A. F. Barrero;A. Lara

  • Analysis of Juniperus communis and its varieties based on DNA fingerprinting

    Robert P. Adams;Ram N. Pandey

  • Preparation of extracts from Juniper leaves for electrophoresis

    Walter A. Kelley;Robert P. Adams

  • Systematics of smooth leaf margin Juniperus of the western hemisphere based on leaf essential oils and RAPD DNA fingerprinting

    Robert P. Adams

Frequent Co-Authors

James P. Muir
James P. Muir Texas A&M University
Sonja Siljak-Yakovlev
Sonja Siljak-Yakovlev University of Paris-Saclay
Bengt Saltin
Bengt Saltin University of Copenhagen
Jeffrey P. Mower
Jeffrey P. Mower University of Nebraska–Lincoln
Oriane Hidalgo
Oriane Hidalgo Royal Botanic Gardens
John W. Walker
John W. Walker Texas A&M University
Manuel Nogales
Manuel Nogales Spanish National Research Council
Ilia J. Leitch
Ilia J. Leitch Royal Botanic Gardens
Ann E. Hagerman
Ann E. Hagerman Miami University
Alejandro F. Barrero
Alejandro F. Barrero University of Granada

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