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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 49 2292 2115 578 508 163 8171

James P. Syvertsen publications per year

The chart shows the history of publications by James P. Syvertsen between 1969 and 2020, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. James P. Syvertsen published across 52 years, from 1969 to 2020, averaging 3.2 papers a year. Output peaked at 11 publications in 2007. 1 of the 167 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1969 to 2020. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 2007. 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 1 publication 1976: 1 publication 1977: 0 publications 1978: 0 publications 1979: 1 publication 1980: 3 publications 1981: 1 publication 1982: 2 publications 1983: 5 publications 1984: 3 publications 1985: 5 publications 1986: 1 publication 1987: 6 publications 1988: 3 publications 1989: 1 publication 1990: 2 publications 1991: 6 publications 1992: 4 publications 1993: 6 publications 1994: 3 publications 1995: 6 publications 1996: 4 publications 1997: 4 publications 1998: 0 publications 1999: 1 publication 2000: 3 publications 2001: 7 publications 2002: 3 publications 2003: 4 publications 2004: 6 publications 2005: 9 publications 2006: 9 publications 2007: 11 publications 2008: 9 publications 2009: 7 publications 2010: 9 publications 2011: 4 publications 2012: 6 publications 2013: 1 publication 2014: 2 publications 2015: 2 publications 2016: 2 publications 2017: 1 publication 2018: 1 publication 2019: 0 publications 2020: 1 publication
1969 2020

167 publications in total across all disciplines

View publications per year as a table
James P. Syvertsen: publications per year, 1969 to 2020
Year Publications
1969 1
1970 0
1971 0
1972 0
1973 0
1974 0
1975 1
1976 1
1977 0
1978 0
1979 1
1980 3
1981 1
1982 2
1983 5
1984 3
1985 5
1986 1
1987 6
1988 3
1989 1
1990 2
1991 6
1992 4
1993 6
1994 3
1995 6
1996 4
1997 4
1998 0
1999 1
2000 3
2001 7
2002 3
2003 4
2004 6
2005 9
2006 9
2007 11
2008 9
2009 7
2010 9
2011 4
2012 6
2013 1
2014 2
2015 2
2016 2
2017 1
2018 1
2019 0
2020 1
Total 167
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James P. Syvertsen 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 James P. Syvertsen 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, 161–165 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: 163 publications — 64th percentile

64% 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
161–165 159 163
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
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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James P. Syvertsen 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 James P. Syvertsen 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, 49 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: 49 D-Index — 66th percentile

66% 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 49
50 122
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
  • Horticulture
  • Photosynthesis

James P. Syvertsen mainly focuses on Agronomy, Botany, Transpiration, Photosynthesis and Rootstock. The study incorporates disciplines such as Citrus rootstock and Orange in addition to Agronomy. His Botany study frequently involves adjacent topics like Nutrient.

The Photosynthesis study combines topics in areas such as Evergreen and Macadamia integrifolia. His work deals with themes such as Inoculation, Salinity and Rutaceae, which intersect with Rootstock. His research in Citrus paradisi tackles topics such as Stomatal conductance which are related to areas like Horticulture.

His most cited work include:

  • Vegetation effects on the isotope composition of oxygen in atmospheric CO2 (335 citations)
  • On the relationship between leaf anatomy and CO2 diffusion through the mesophyll of hypostomatous leaves (303 citations)
  • Low conductances for CO2 diffusion from stomata to the sites of carboxylation in leaves of woody species (277 citations)

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

Horticulture, Agronomy, Botany, Rootstock and Orange are his primary areas of study. The concepts of his Horticulture study are interwoven with issues in Photosynthesis, Stomatal conductance, Salinity and Irrigation. His Stomatal conductance research incorporates elements of Chlorophyll fluorescence and Olea.

His work on Shoot as part of general Agronomy research is frequently linked to Mycorrhiza, thereby connecting diverse disciplines of science. James P. Syvertsen has included themes like Plant nutrition, Water-use efficiency and Carrizo citrange in his Rootstock study. His research investigates the connection between Orange and topics such as Rutaceae that intersect with issues in Fruit tree.

He most often published in these fields:

  • Horticulture (52.27%)
  • Agronomy (43.94%)
  • Botany (33.33%)

What were the highlights of his more recent work (between 2009-2020)?

  • Horticulture (52.27%)
  • Rootstock (25.76%)
  • Agronomy (43.94%)

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

James P. Syvertsen focuses on Horticulture, Rootstock, Agronomy, Citrus rootstock and Salinity. His research in Horticulture intersects with topics in Photosynthesis, Nutrient and Irrigation. His biological study spans a wide range of topics, including Chlorophyll, Water-use efficiency and Transpiration.

Shoot and Dry weight are subfields of Agronomy in which his conducts study. His Citrus rootstock study results in a more complete grasp of Botany. His study in the field of Citrus × sinensis is also linked to topics like Phosphorus-32.

Between 2009 and 2020, his most popular works were:

  • Multiple abiotic stresses occurring with salinity stress in citrus (95 citations)
  • Irrigation Water Quality and Salinity Effects in Citrus Trees (90 citations)
  • Salinity Tolerance and Leaf Water Use Efficiency in Citrus (28 citations)

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

  • Botany
  • Horticulture
  • Ecology

His primary areas of study are Agronomy, Rootstock, Salinity, Shoot and Water-use efficiency. He has researched Agronomy in several fields, including Citrus rootstock, Chlorophyll, Horticulture and Transpiration. His research integrates issues of Nutrient and Plant physiology in his study of Horticulture.

James P. Syvertsen interconnects Citrus × sinensis, Hydroponics and Abiotic component in the investigation of issues within Transpiration. His Salinity research is multidisciplinary, incorporating perspectives in Agroforestry and Irrigation water. The various areas that he examines in his Dry weight study include Photosynthesis, Phosphate and Nitrogen.

Best Publications

  • On the relationship between leaf anatomy and CO2 diffusion through the mesophyll of hypostomatous leaves

    J. P. Syvertsen;J. Lloyd;C. McCONCHIE;P. E. Kriedemann

  • Vegetation effects on the isotope composition of oxygen in atmospheric CO2

    Graham D. Farquhar;Jon Lloyd;John A. Taylor;Lawrence B. Flanagan

  • Low conductances for CO2 diffusion from stomata to the sites of carboxylation in leaves of woody species

    J. Lloyd;J. P. Syvertsen;P. E. Kriedemann;G. D. Farquhar

  • Gas exchange, chlorophyll and nutrient contents in relation to Na+ and Cl− accumulation in ‘Sunburst’ mandarin grafted on different rootstocks

    Francisco Garcı́a-Sánchez;John L. Jifon;Micaela Carvajal;James P. Syvertsen

  • Responses to flooding and drought stress by two citrus rootstock seedlings with different water‐use efficiency

    Francisco García-Sánchez;Francisco García-Sánchez;James. P. Syvertsen;Vicente Gimeno;Pablo Botía

  • Moderate shade can increase net gas exchange and reduce photoinhibition in citrus leaves.

    John L. Jifon;James P. Syvertsen

  • HOST DETERMINANTS OF MYCORRHIZAL DEPENDENCY OF CITRUS ROOTSTOCK SEEDLINGS

    J. H. Graham;J. P. Syvertsen

  • Multiple abiotic stresses occurring with salinity stress in citrus

    J.P. Syvertsen;F. Garcia-Sanchez

  • Kaolin Particle Film Applications Can Increase Photosynthesis and Water Use Efficiency of `Ruby Red' Grapefruit Leaves

    John L. Jifon;James P. Syvertsen

  • Carbon Economy of Sour Orange in Relation to Mycorrhizal Colonization and Phosphorus Status

    D. M. Eissenstat;J. H. Graham;J. P. Syvertsen;D. L. Drouillard

  • INFLUENCE OF VESICULAR–ARBUSCULAR MYCORRHIZA ON THE HYDRAULIC CONDUCTIVITY OF ROOTS OF TWO CITRUS ROOTSTOCKS

    J. H. Graham;J. P. Syvertsen

  • Growth Environment and Leaf Anatomy Affect Nondestructive Estimates of Chlorophyll and Nitrogen in Citrus sp. Leaves

    John L. Jifon;James P. Syvertsen;Eric Whaley

  • Fruit load and canopy shading affect leaf characteristics and net gas exchange of 'Spring' navel orange trees.

    J. P. Syvertsen;C. Goñi;A. Otero

  • Leaf water relations and net gas exchange responses of salinized Carrizo citrange seedlings during drought stress and recovery.

    J. G. Pérez-Pérez;James. P. Syvertsen;Pablo Botía;Francisco García-Sánchez;Francisco García-Sánchez

  • Irrigation Water Quality and Salinity Effects in Citrus Trees

    Yoseph Levy;Jim Syvertsen

  • Leaf chlorophyll, net gas exchange and chloroplast ultrastructure in citrus leaves of different nitrogen status.

    Bhaskar R Bondada;James P Syvertsen

  • Salinity reduces water use and nitrate-N-use efficiency of citrus

    John D. Lea-Cox;James P. Syvertsen

  • EFFECT OF DROUGHT STRESS AND VESICULAR–ARBUSCULAR MYCORRHIZA ON CITRUS TRANSPIRATION AND HYDRAULIC CONDUCTIVITY OF ROOTS

    Yoseph Levy;J. P. Syvertsen;S. Nemec

  • Leaf Characteristics and Net Gas Exchange of Diploid and Autotetraploid Citrus

    R Romero-Aranda;B.R Bondada;J.P Syvertsen;J.W Grosser

  • Salinity Tolerance of Cleopatra Mandarin and Carrizo Citrange Citrus Rootstock Seedlings Is Affected by CO2 Enrichment during Growth

    Francisco García-Sánchez;J.P. Syvertsen

Frequent Co-Authors

Francisco García-Sánchez
Francisco García-Sánchez Spanish National Research Council
James H. Graham
James H. Graham University of Florida
Vicente Martínez
Vicente Martínez Spanish National Research Council
John L. Jifon
John L. Jifon Texas A&M University
Jon Lloyd
Jon Lloyd Imperial College London
Graham D. Farquhar
Graham D. Farquhar Australian National University
David M. Eissenstat
David M. Eissenstat Pennsylvania State University
Dirceu Mattos
Dirceu Mattos Instituto Agronômico de Campinas
Lawrence B. Flanagan
Lawrence B. Flanagan University of Lethbridge
Ashok K. Alva
Ashok K. Alva University of Florida

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