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D. James Harris

D. James Harris

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Ecology and Evolution
Portugal
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Ecology and Evolution 62 2057 1969 7 7 321 15536

D. James Harris publications per year

The chart shows the history of publications by D. James Harris between 1986 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. D. James Harris published across 41 years, from 1986 to 2026, averaging 8.8 papers a year. Output peaked at 24 publications in 2013. 11 of the 361 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1986 to 2026. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2013. 1986: 1 publication 1987: 1 publication 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 1 publication 1994: 0 publications 1995: 2 publications 1996: 1 publication 1997: 2 publications 1998: 3 publications 1999: 4 publications 2000: 8 publications 2001: 5 publications 2002: 4 publications 2003: 7 publications 2004: 4 publications 2005: 10 publications 2006: 13 publications 2007: 15 publications 2008: 13 publications 2009: 17 publications 2010: 12 publications 2011: 21 publications 2012: 22 publications 2013: 24 publications 2014: 19 publications 2015: 11 publications 2016: 18 publications 2017: 14 publications 2018: 14 publications 2019: 17 publications 2020: 15 publications 2021: 16 publications 2022: 12 publications 2023: 13 publications 2024: 11 publications 2025: 9 publications 2026: 2 publications
1986 2026

361 publications in total across all disciplines

View publications per year as a table
D. James Harris: publications per year, 1986 to 2026
Year Publications
1986 1
1987 1
1988 0
1989 0
1990 0
1991 0
1992 0
1993 1
1994 0
1995 2
1996 1
1997 2
1998 3
1999 4
2000 8
2001 5
2002 4
2003 7
2004 4
2005 10
2006 13
2007 15
2008 13
2009 17
2010 12
2011 21
2012 22
2013 24
2014 19
2015 11
2016 18
2017 14
2018 14
2019 17
2020 15
2021 16
2022 12
2023 13
2024 11
2025 9
2026 2
Total 361
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D. James Harris publications per year - data summary

  • D. James Harris, a Ecology and Evolution scholar from University of Porto, has 361 publications recorded across 41 years, from 1986 to 2026.
  • The oldest publication on record dates to 1986 and the most recent to 2026.
  • The most productive year is 2013, with 24 publications.
  • The least productive years with any output are 1986, 1987, 1993 and 1996, with 1 publication each.
  • 6 of the 41 years in the span carry no publications at all (1988, 1989, 1990, 1991 and others).
  • The rate of publication averages 8.8 papers per year over the whole span, or 10.3 per year counting only the 35 years with at least one publication.
  • The last 5 years on the chart (2022-2026) hold 47 publications, 13% of the career total.
  • Split into equal eras - 1986-1999: 15 publications (1.1 per year); 2000-2013: 175 publications (12.5 per year); 2014-2026: 171 publications (13.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

D. James Harris publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where D. James Harris sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 100 bars. Horizontal axis: publications, 37–41 to 531+. Vertical axis: number of scientists, 0 to 333. Most scientists, 333, have 97–101 publications. The last bar groups every scientist with 531 publications or more. The highlighted bar, 317–321 publications, is where this scientist sits. 37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37–41 publications 531+

This scientist: 321 publications — 93rd percentile

93% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 531 publications or more.

View publications distribution as a table
Number of Ecology and Evolution scientists by publication count, Research.com 2026 ranking edition. Based on 8,381 ranked scientists.
Publications Scientists This scientist
37–41 2
42–46 9
47–51 10
52–56 31
57–61 56
62–66 91
67–71 92
72–76 127
77–81 173
82–86 236
87–91 227
92–96 240
97–101 333
102–106 280
107–111 300
112–116 285
117–121 305
122–126 287
127–131 278
132–136 289
137–141 273
142–146 262
147–151 246
152–156 235
157–161 205
162–166 199
167–171 174
172–176 164
177–181 173
182–186 189
187–191 170
192–196 139
197–201 128
202–206 117
207–211 115
212–216 107
217–221 124
222–226 81
227–231 82
232–236 85
237–241 75
242–246 66
247–251 81
252–256 69
257–261 70
262–266 55
267–271 64
272–276 49
277–281 48
282–286 44
287–291 45
292–296 36
297–301 39
302–306 38
307–311 30
312–316 34
317–321 25 321
322–326 22
327–331 28
332–336 30
337–341 22
342–346 30
347–351 26
352–356 22
357–361 29
362–366 21
367–371 12
372–376 18
377–381 17
382–386 13
387–391 21
392–396 13
397–401 10
402–406 15
407–411 8
412–416 9
417–421 8
422–426 4
427–431 10
432–436 10
437–441 5
442–446 4
447–451 10
452–456 2
457–461 4
462–466 7
467–471 7
472–476 6
477–481 6
482–486 3
487–491 3
492–496 4
497–501 4
502–506 8
507–511 5
512–516 4
517–521 5
522–526 4
527–530 5
531+ 100
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D. James Harris publication distribution in Ecology and Evolution in 2026 - data summary

  • The chart plots the publication count of all 8,381 Ecology and Evolution scientists ranked by Research.com in 2026, grouped into 100 ranges running from 37–41 to 531+ publications.
  • D. James Harris, a Ecology and Evolution scholar from University of Porto, records 321 publications - the 93rd percentile of the discipline.
  • 93% of ranked Ecology and Evolution scientists score the same or lower than D. James Harris, and about 7% score higher.
  • The median of the discipline falls in the 147–151 publications range, and D. James Harris ranks above the median.
  • The most crowded range is 97–101 publications, holding 333 scientists (4% of the field).
  • 58% of the field sits in the lowest quarter of the value range (up to 157–161 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 531 publications or more, 100 scientists in all (1% of the field).

D. James Harris D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where D. James Harris sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 92 bars. Horizontal axis: D-Index, 30 to 121+. Vertical axis: number of scientists, 0 to 280. Most scientists, 280, have 40 D-Index. The last bar groups every scientist with 121 D-Index or more. The highlighted bar, 62 D-Index, is where this scientist sits. 30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

This scientist: 62 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 121 D-Index or more.

View D-Index distribution as a table
Number of Ecology and Evolution scientists by D-index, Research.com 2026 ranking edition. Based on 8,381 ranked scientists.
D-Index Scientists This scientist
30 95
31 123
32 191
33 245
34 252
35 244
36 249
37 244
38 254
39 254
40 280
41 274
42 266
43 233
44 248
45 208
46 201
47 213
48 207
49 172
50 209
51 199
52 153
53 169
54 163
55 148
56 120
57 146
58 137
59 140
60 104
61 119
62 118 62
63 99
64 77
65 100
66 86
67 83
68 75
69 94
70 57
71 68
72 59
73 63
74 66
75 60
76 42
77 49
78 39
79 37
80 43
81 41
82 45
83 34
84 40
85 35
86 55
87 24
88 24
89 30
90 23
91 25
92 27
93 27
94 13
95 23
96 12
97 14
98 19
99 16
100 14
101 5
102 21
103 16
104 10
105 7
106 7
107 7
108 6
109 9
110 11
111 12
112 9
113 7
114 3
115 8
116 5
117 11
118 4
119 2
120 5
121+ 100
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D. James Harris D-index placement in Ecology and Evolution in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 8,381 Ecology and Evolution scientists ranked by Research.com in 2026, grouped into 92 ranges running from 30 to 121+ D-Index.
  • D. James Harris, a Ecology and Evolution scholar from University of Porto, records 62 D-Index - the 76th percentile of the discipline.
  • 76% of ranked Ecology and Evolution scientists score the same or lower than D. James Harris, and about 24% score higher.
  • The median of the discipline falls in the 48 D-Index range, and D. James Harris ranks above the median.
  • The most crowded range is 40 D-Index, holding 280 scientists (3% of the field).
  • 60% of the field sits in the lowest quarter of the value range (up to 52 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 121 D-Index or more, 100 scientists in all (1% of the field).

Research.com Recognitions

  • 2026 - Research.com Ecology and Evolution in Portugal Leader Award
  • 2025 - Research.com Ecology and Evolution in Portugal Leader Award
  • 1962 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

D. James Harris is affiliated with the University of Porto in Portugal. Their research spans multiple disciplines, primarily within environmental science, immunology and microbiology, and biochemistry, genetics, and molecular biology. Their work incorporates various subfields such as parasitology, genetics, global and planetary change, ecological modeling, and ecology.

The scientist's research topics cover a wide range of biological and ecological areas, including amphibian and reptile biology, species distribution and climate change, vector-borne infectious diseases, bird parasitology and diseases, genetic diversity and population structure, turtle biology and conservation, and studies related to Yersinia bacterium, plague, and ectoparasites.

Frequent collaborators in their work include Ana Perera, Daniele Salvi, Isabel Damas-Moreira, Raquel Xavier, and J. Filipe Faria.

Among the journals and publication venues where D. James Harris frequently publishes are:

  • Herpetozoa
  • Molecular Phylogenetics and Evolution
  • Behavioral Ecology and Sociobiology
  • Diversity
  • PLoS ONE

Significant recent publications include:

  • "Extensive introgression and mosaic genomes of Mediterranean endemic lizards," 2021, Nature Communications
  • "Getting ahead: exploitative competition by an invasive lizard," 2020, Behavioral Ecology and Sociobiology
  • "Conservation status of the world's skinks (Scincidae): Taxonomic and geographic patterns in extinction risk," 2021, Biological Conservation
  • "Treatment and Prevention of Cardiovascular Implantable Electronic Device (CIED) Infections," 2022, CJC Open
  • "Fossil-calibrated time tree of Podarcis wall lizards provides limited support for biogeographic calibration models," 2021, Molecular Phylogenetics and Evolution

D. James Harris has also been recognized with the award of Fellow of the American Association for the Advancement of Science (AAAS) in 1962.

Best Publications

  • Averting biodiversity collapse in tropical forest protected areas

    William F. Laurance;William F. Laurance;D. Carolina Useche;Julio Rendeiro;Margareta Kalka

  • Asynchronous carbon sink saturation in African and Amazonian tropical forests

    Wannes Hubau;Wannes Hubau;Wannes Hubau;Simon L. Lewis;Simon L. Lewis;Oliver L. Phillips;Kofi Affum-Baffoe

  • Above-ground biomass and structure of 260 African tropical forests.

    Simon L. Lewis;Simon L. Lewis;Bonaventure Sonké;Terry Sunderland;Serge K. Begne;Serge K. Begne

  • Cyanobacterial hydrogenases: diversity, regulation and applications

    Paula Tamagnini;Paula Tamagnini;Elsa Leitão;Paulo Oliveira;Daniela Ferreira;Daniela Ferreira

  • Diversity and carbon storage across the tropical forest biome

    Martin J. P. Sullivan;Joey Talbot;Simon L. Lewis;Simon L. Lewis;Oliver L. Phillips

  • Intragenomic Variation Within ITS1 and ITS2 of Freshwater Crayfishes (Decapoda: Cambaridae): Implications for Phylogenetic and Microsatellite Studies

    D. James Harris;Keith A. Crandall

  • Long-term thermal sensitivity of Earth’s tropical forests

    Martin J.P. Sullivan;Martin J.P. Sullivan;Simon L. Lewis;Simon L. Lewis;Kofi Affum-Baffoe;Carolina Castilho

  • Can you bank on GenBank

    D. James Harris

  • The monophyletic origin of freshwater crayfish estimated from nuclear and mitochondrial DNA sequences

    Keith A. Crandal;D. James Harris;James W. Fetzner

  • Relationships of lacertid lizards (Reptilia: Lacertidae) estimated from mitochondrial DNA sequences and morphology

    Unknown

  • Exploring the floristic diversity of tropical Africa

    Marc S.M. Sosef;Gilles Dauby;Gilles Dauby;Anne Blach-Overgaard;Xander van der Burgt

  • DNA barcoding reveals cryptic diversity in marine hydroids (Cnidaria, Hydrozoa) from coastal and deep-sea environments

    Carlos J. Moura;David J. Harris;Marina R. Cunha;Alex D. Rogers

  • Ancient introgression of Lepus timidus mtDNA into L. granatensis and L. europaeus in the Iberian Peninsula.

    P.C. Alves;N. Ferrand;F. Suchentrunk;D.J. Harris

  • RAINBIO: a mega-database of tropical African vascular plants distributions.

    Gilles Dauby;Rainer Zaiss;Anne Blach-Overgaard;Luís Catarino

  • Phylogenetic classification of the world's tropical forests

    J. W.Ferry Slik;Janet Franklin;Víctor Arroyo-Rodríguez;Richard Field

  • Environmental temperatures shape thermal physiology as well as diversification and genome-wide substitution rates in lizards

    Joan Garcia-Porta;Iker Irisarri;Martin Kirchner;Ariel Rodríguez

  • Cradles and museums of generic plant diversity across tropical Africa

    Léo-Paul M J Dagallier;Steven B Janssens;Gilles Dauby;Anne Blach-Overgaard

  • When cryptic diversity blurs the picture: a cautionary tale from Iberian and North African Podarcis wall lizards

    Antigoni Kaliontzopoulou;Catarina Pinho;D. James Harris;Miguel A. Carretero

  • Cryptic Speciation Patterns in Iranian Rock Lizards Uncovered by Integrative Taxonomy

    Faraham Ahmadzadeh;Morris Flecks;Miguel A. Carretero;Omid Mozaffari

  • Complex biogeographical distribution of genetic variation within Podarcis wall lizards across the Strait of Gibraltar

    D. J. Harris;S. Carranza;E. N. Arnold;C. Pinho

  • Complex estimates of evolutionary relationships in Tarentola mauritanica (Reptilia: Gekkonidae) derived from mitochondrial DNA sequences

    D. James Harris;Vasco Batista;Petros Lymberakis;Miguel A. Carretero

  • Phylogeography of the lacertid lizard, Psammodromus algirus, in Iberia and across the Strait of Gibraltar

    S. Carranza;D. J. Harris;E. N. Arnold;V. Batista

  • Reexamination of the Iberian and North African Podarcis (Squamata: Lacertidae) phylogeny based on increased mitochondrial DNA sequencing.

    Catarina Pinho;Nuno Ferrand;D. James Harris

  • Non-equilibrium estimates of gene flow inferred from nuclear genealogies suggest that Iberian and North African wall lizards (Podarcis spp.) are an assemblage of incipient species.

    Catarina Pinho;D James Harris;Nuno Ferrand

  • Deciphering patterns of transoceanic dispersal: the evolutionary origin and biogeography of coastal lizards (Cryptoblepharus) in the Western Indian Ocean region

    Sara Rocha;Miguel A. Carretero;Miguel Vences;Frank Glaw

Frequent Co-Authors

Miguel A. Carretero
Miguel A. Carretero University of Porto
Salvador Carranza
Salvador Carranza Pompeu Fabra University
José Carlos Brito
José Carlos Brito University of Porto
David Posada
David Posada Universidade de Vigo
Miguel Vences
Miguel Vences Technische Universität Braunschweig
Nuno Ferrand
Nuno Ferrand University of Porto
Frank Glaw
Frank Glaw University of Bonn
Elsa Froufe
Elsa Froufe University of Porto
Wolfgang Böhme
Wolfgang Böhme Leibniz Association
Paulo C. Alves
Paulo C. Alves University of Porto

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