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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 34 1851 1701 18 17 245 4854
Ecology and Evolution 34 7579 7329 89 81 244 4974

Nico J. Smit publications per year

The chart shows the history of publications by Nico J. Smit between 1995 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Nico J. Smit published across 31 years, from 1995 to 2025, averaging 10.7 papers a year. Output peaked at 36 publications in 2019. 46 of the 333 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1995 to 2025. Vertical axis: number of publications, 0 to 36. Peak 36 publications in 2019. 1995: 1 publication 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 2 publications 2000: 3 publications 2001: 2 publications 2002: 3 publications 2003: 6 publications 2004: 4 publications 2005: 3 publications 2006: 4 publications 2007: 2 publications 2008: 4 publications 2009: 12 publications 2010: 2 publications 2011: 4 publications 2012: 6 publications 2013: 14 publications 2014: 22 publications 2015: 13 publications 2016: 14 publications 2017: 21 publications 2018: 18 publications 2019: 36 publications 2020: 23 publications 2021: 28 publications 2022: 22 publications 2023: 18 publications 2024: 17 publications 2025: 29 publications
1995 2025

333 publications in total across all disciplines

View publications per year as a table
Nico J. Smit: publications per year, 1995 to 2025
Year Publications
1995 1
1996 0
1997 0
1998 0
1999 2
2000 3
2001 2
2002 3
2003 6
2004 4
2005 3
2006 4
2007 2
2008 4
2009 12
2010 2
2011 4
2012 6
2013 14
2014 22
2015 13
2016 14
2017 21
2018 18
2019 36
2020 23
2021 28
2022 22
2023 18
2024 17
2025 29
Total 333
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Nico J. Smit publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Nico J. Smit sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 244–248 publications, is where this scientist sits. 29–33 publications: 1 scientist 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29–33 publications 442+

This scientist: 245 publications — 83rd percentile

83% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24 245
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99
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Nico J. Smit D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Nico J. Smit sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 34 D-Index, is where this scientist sits. 20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 34 D-Index — 43rd percentile

43% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143
33 137
34 126 34
35 134
36 112
37 115
38 105
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
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Overview

Nico J. Smit is a researcher affiliated with North-West University in South Africa. Their work focuses predominantly on Environmental Science, with particular expertise in Ecology, Parasitology, Health, Toxicology and Mutagenesis, Nature and Landscape Conservation, and Aquatic Science. Their research has contributed extensively to the understanding of parasite biology, host interactions, and aquatic ecosystem health.

Their research topics include:

  • Parasite Biology and Host Interactions
  • Parasites and Host Interactions
  • Fish Biology and Ecology Studies
  • Environmental Toxicology and Ecotoxicology
  • Helminth infection and control
  • Ichthyology and Marine Biology
  • Aquatic Invertebrate Ecology and Behavior

Nico J. Smit has authored and contributed to a number of scientific papers published in several notable journals. Recent papers include:

  • "Bridging the gap: aquatic parasites in the One Health concept," 2021, published in Trends in Parasitology
  • "The role of fish helminth parasites in monitoring metal pollution in aquatic ecosystems: a case study in the world's most productive platinum mining region," 2020, published in Parasitology Research
  • "A diversity and functional approach to evaluate the macroinvertebrate responses to multiple stressors in a small subtropical austral river," 2021, published in Ecological Indicators
  • "High parasite diversity in a neglected host: larval trematodes of Bithynia tentaculata in Central Europe," 2020, published in Journal of Helminthology
  • "Bioaccumulation and trophic transfer of total mercury through the aquatic food webs of an African sub-tropical wetland system," 2023, published in The Science of The Total Environment

Their frequent co-authors include:

  • Victor Wepener
  • Kerry A. Hadfield
  • Bernd Sures
  • Marliese Truter
  • Johannes H. Erasmus

Nico J. Smit's publications regularly appear in these journals, which indicate their focus and preferred venues for disseminating research:

  • International Journal for Parasitology Parasites and Wildlife
  • Parasitology
  • Trends in Parasitology
  • Systematic Parasitology
  • Folia Parasitologica

Best Publications

  • Global diversity of fish parasitic isopod crustaceans of the family Cymothoidae

    Nico J. Smit;Niel L. Bruce;Kerry A. Hadfield

  • The curious life-style of the parasitic stages of Gnathiid isopods.

    N.J. Smit;A.J. Davies

  • Bioaccumulation and human health risk assessment of DDT and other organochlorine pesticides in an apex aquatic predator from a premier conservation area.

    Ruan Gerber;Nico J. Smit;Johan H.J. Van Vuren;Shouta M.M. Nakayama

  • A histology-based fish health assessment of four commercially and ecologically important species from the Okavango Delta panhandle, Botswana.

    J C van Dyk;M J Marchand;N J Smit;G M Pieterse

  • The life cycle of haemogregarina bigemina (Adeleina: Haemogregarinidae) in South African hosts.

    Angela J. Davies;Nico J. Smit

  • The butterfly effect: parasite diversity, environment, and emerging disease in aquatic wildlife.

    Robert D. Adlard;Terrence L. Miller;Nico J. Smit

  • Life cycle of the temporary fish parasite, Gnathia africana (Crustacea: Isopoda: Gnathiidae)

    Nico J. Smit;Linda Basson;Jo G. Van As

  • Gnathia pantherina sp. n. (Crustacea: Isopoda: Gnathiidae), a temporary ectoparasite of some elasmobranch species from southern Africa.

    Nico J. Smit;Linda Basson

  • Haemogregarina bigemina (Protozoa: Apicomplexa: Adeleorina) - past, present and future

    Angela J. Davies;Nico J. Smit;Polly M. Hayes;Alan M. Seddon

  • Review of the fish-parasitic genus Cymothoa Fabricius, 1793 (Isopoda, Cymothoidae, Crustacea) from the southwestern Indian Ocean, including a new species from South Africa

    Kerry A Hadfield;Niel L Bruce;Nico J Smit

  • A histology-based fish health assessment of the tigerfish, **Hydrocynus vittatus** from a DDT-affected area

    K.J. McHugh;N.J. Smit;J.H.J. Van Vuren;J.C. Van Dyk

  • A Guide to the Parasites of African Freshwater Fishes

    Tomáš Scholz;Maarten Pieterjan Vanhove;Nico Smit;Zuzana Jayasundera

  • Bioaccumulation of persistent organic pollutants and their trophic transfer through the food web: Human health risks to the rural communities reliant on fish from South Africa's largest floodplain.

    C M Volschenk;R Gerber;M T Mkhonto;Y Ikenaka

  • Metal accumulation in riverine macroinvertebrates from a platinum mining region

    J.H. Erasmus;W. Malherbe;S. Zimmermann;S. Zimmermann;A.W. Lorenz

  • Alien freshwater fauna in South Africa

    Olaf L. F. Weyl;Bruce R. Ellender;Bruce R. Ellender;Ryan J. Wassermann;Ryan J. Wassermann;Marliese Truter;Marliese Truter

  • Spatial and temporal variation of invertebrate community structure in flood-controlled tropical floodplain wetlands

    Trevor Dube;Lizan DeNecker;Johan H.J. van Vuren;Victor Wepener

  • Gnathia aureamaculosa, a likely definitive host of Haemogregarina balistapi and potential vector for Haemogregarina bigemina between fishes of the Great Barrier Reef, Australia.

    Lynda M. Curtis;Alexandra S. Grutter;Nico J. Smit;Angela J. Davies;Angela J. Davies

  • Bridging the gap: aquatic parasites in the One Health concept

    Christian Selbach;Kim N. Mouritsen;Robert Poulin;Bernd Sures

  • Morphological and molecular characterization of a marine fish trypanosome from South Africa, including its development in a leech vector

    Polly M Hayes;Polly M Hayes;Scott P Lawton;Nico J Smit;Wendy C Gibson

  • Redescription of the monotypic genus Cinusa Schioedte and Meinert, 1884 (Isopoda, Cymothoidae), a buccal-cavity isopod from South Africa

    Kerry A. Hadfield;Niel L. Bruce;Nico J. Smit

  • A redescription of Haemogregarina fitzsimonsi Dias, 1953 and some comments on Haemogregarina parvula Dias, 1953 (Adeleorina: Haemogregarinidae) from southern African tortoises (Cryptodira: Testudinidae), with new host data and distribution records

    Courtney A. Cook;Nico J. Smit;Angela J. Davies

  • Biodiversity of frog haemoparasites from sub-tropical northern KwaZulu-Natal, South Africa

    Edward Charles Netherlands;Courtney A Cook;Donnavan J D Kruger;Louis H du Preez

  • A redescription of the adult male and praniza of Gnathia africana Barnard, 1914 (Crustacea, Isopoda, Gnathiidae) from southern Africa

    Nico J. Smit;Jo G. Van As;Linda Basson

  • Double blow: Alien crayfish infected with invasive temnocephalan in South African waters

    Louis Du Preez;Nico Smit

  • Alien freshwater fish parasites from South Africa: Diversity, distribution, status and the way forward.

    Nico J. Smit;Wynand Malherbe;Kerry A. Hadfield;Kerry A. Hadfield

  • Review of the fish parasitic genus Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae) from South Africa, including the description of two new species.

    Kerry A. Hadfield;Niel L. Bruce;Nico J. Smit

Frequent Co-Authors

Victor Wepener
Victor Wepener North-West University
Alexandra S. Grutter
Alexandra S. Grutter University of Queensland
Louis H. Du Preez
Louis H. Du Preez North-West University
Luc Brendonck
Luc Brendonck KU Leuven
Bernd Sures
Bernd Sures University of Duisburg-Essen
Olaf L. F. Weyl
Olaf L. F. Weyl South African Institute for Aquatic Biodiversity
Lieven Bervoets
Lieven Bervoets University of Antwerp
Maarten P.M. Vanhove
Maarten P.M. Vanhove Hasselt University
Milan Gelnar
Milan Gelnar Masaryk University
Tomáš Scholz
Tomáš Scholz Czech Academy of Sciences

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