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
Microbiology 78 1295 1166 39 34 265 20710

Edward Topp publications per year

The chart shows the history of publications by Edward Topp between 1982 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Edward Topp published across 44 years, from 1982 to 2025, averaging 8.7 papers a year. Output peaked at 29 publications in 2013. 17 of the 384 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1982 to 2025. Vertical axis: number of publications, 0 to 29. Peak 29 publications in 2013. 1982: 1 publication 1983: 0 publications 1984: 1 publication 1985: 0 publications 1986: 1 publication 1987: 0 publications 1988: 1 publication 1989: 0 publications 1990: 3 publications 1991: 1 publication 1992: 6 publications 1993: 3 publications 1994: 3 publications 1995: 3 publications 1996: 1 publication 1997: 3 publications 1998: 3 publications 1999: 2 publications 2000: 8 publications 2001: 6 publications 2002: 3 publications 2003: 6 publications 2004: 5 publications 2005: 8 publications 2006: 5 publications 2007: 18 publications 2008: 14 publications 2009: 19 publications 2010: 23 publications 2011: 18 publications 2012: 22 publications 2013: 29 publications 2014: 18 publications 2015: 21 publications 2016: 23 publications 2017: 9 publications 2018: 14 publications 2019: 11 publications 2020: 11 publications 2021: 16 publications 2022: 11 publications 2023: 17 publications 2024: 11 publications 2025: 6 publications
1982 2025

384 publications in total across all disciplines

View publications per year as a table
Edward Topp: publications per year, 1982 to 2025
Year Publications
1982 1
1983 0
1984 1
1985 0
1986 1
1987 0
1988 1
1989 0
1990 3
1991 1
1992 6
1993 3
1994 3
1995 3
1996 1
1997 3
1998 3
1999 2
2000 8
2001 6
2002 3
2003 6
2004 5
2005 8
2006 5
2007 18
2008 14
2009 19
2010 23
2011 18
2012 22
2013 29
2014 18
2015 21
2016 23
2017 9
2018 14
2019 11
2020 11
2021 16
2022 11
2023 17
2024 11
2025 6
Total 384
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Edward Topp publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Edward Topp sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 265–274 publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 265 publications — 69th percentile

69% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139 265
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
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Edward Topp D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Edward Topp sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 78 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 78 D-Index — 77th percentile

77% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73 78
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Overview

What is he best known for?

The fields of study he is best known for:

  • Bacteria
  • Ecology
  • Gene

Antibiotic resistance, Bacteria, Microbiology, Manure and Agronomy are his primary areas of study. Edward Topp has researched Antibiotic resistance in several fields, including Biotechnology and Drug resistance. His Bacteria study incorporates themes from Atrazine, Strain and Metabolism.

His Microbiology research incorporates themes from 16S ribosomal RNA, Salmonella and Escherichia coli. The study incorporates disciplines such as Veterinary medicine and Soil water in addition to Manure. His studies in Agronomy integrate themes in fields like Biosolids, Agriculture, Sludge and Soil microbiology.

His most cited work include:

  • Pharmaceuticals and personal care products in the environment: what are the big questions? (712 citations)
  • Management Options for Reducing the Release of Antibiotics and Antibiotic Resistance Genes to the Environment (427 citations)
  • Human Health Risk Assessment (HHRA) for environmental development and transfer of antibiotic resistance. (325 citations)

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

His primary areas of study are Microbiology, Antibiotic resistance, Manure, Bacteria and Soil water. Edward Topp interconnects Veterinary medicine, Virulence and Escherichia coli in the investigation of issues within Microbiology. His research integrates issues of Biotechnology, Antimicrobial and Soil microbiology in his study of Antibiotic resistance.

His Manure study results in a more complete grasp of Agronomy. The various areas that Edward Topp examines in his Bacteria study include Plasmid and Biochemistry. His biological study spans a wide range of topics, including Environmental chemistry and Biosolids.

He most often published in these fields:

  • Microbiology (31.10%)
  • Antibiotic resistance (32.27%)
  • Manure (20.93%)

What were the highlights of his more recent work (between 2016-2021)?

  • Antibiotic resistance (32.27%)
  • Antibiotics (16.57%)
  • Bacteria (21.80%)

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

Edward Topp mainly investigates Antibiotic resistance, Antibiotics, Bacteria, Microbiology and Manure. His Antibiotic resistance research is multidisciplinary, incorporating perspectives in Sludge, Agriculture, Pathogenic bacteria, Cefotaxime and Sewage treatment. His Antibiotics research incorporates elements of Veterinary medicine, Biotechnology and Soil microbiology.

His work deals with themes such as Plasmid and Antimicrobial, which intersect with Bacteria. His Microbiology study combines topics from a wide range of disciplines, such as Escherichia coli, Multiplex polymerase chain reaction and Virulence. His study on Manure is covered under Agronomy.

Between 2016 and 2021, his most popular works were:

  • Critical knowledge gaps and research needs related to the environmental dimensions of antibiotic resistance. (122 citations)
  • Impact of dairy manure pre-application treatment on manure composition, soil dynamics of antibiotic resistance genes, and abundance of antibiotic-resistance genes on vegetables at harvest. (82 citations)
  • Impact of dairy manure pre-application treatment on manure composition, soil dynamics of antibiotic resistance genes, and abundance of antibiotic-resistance genes on vegetables at harvest. (82 citations)

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

  • Bacteria
  • Ecology
  • Gene

Edward Topp spends much of his time researching Antibiotic resistance, Antibiotics, Agronomy, Bacteria and Biosolids. His Antibiotic resistance research includes themes of Pathogenic bacteria, Risk analysis and Environmental planning. His Antibiotics research is multidisciplinary, incorporating elements of Agriculture, Biotechnology, Pharmaceutical manufacturing and Soil microbiology.

Edward Topp studied Agronomy and Soil water that intersect with Food waste. His Biosolids study combines topics from a wide range of disciplines, such as Sludge, Polybrominated diphenyl ethers, Crop and Groundwater. His studies in Crop integrate themes in fields like Growing season, Lystek, Horticulture, Environmental chemistry and Tile drainage.

Best Publications

  • Management Options for Reducing the Release of Antibiotics and Antibiotic Resistance Genes to the Environment

    Amy Pruden;D.G. Joakim Larsson;Alejandro Amézquita;Peter Collignon

  • The Scourge of Antibiotic Resistance: The Important Role of the Environment

    Rita L. Finley;Peter Collignon;D. G. Joakim Larsson;Scott A. McEwen

  • An omics-based framework for assessing the health risk of antimicrobial resistance genes

    An-Ni Zhang;An-Ni Zhang;Jeffry M. Gaston;Chengzhen L. Dai;Shijie Zhao

  • Human Health Risk Assessment (HHRA) for environmental development and transfer of antibiotic resistance.

    Nicholas J. Ashbolt;Alejandro Amézquita;Thomas Backhaus;Peter Borriello

  • Impact of manure fertilization on the abundance of antibiotic-resistant bacteria and frequency of detection of antibiotic resistance genes in soil and on vegetables at harvest.

    Romain Marti;Andrew Scott;Yuan Ching Tien;Roger Murray

  • Pharmaceuticals in the environment: biodegradation and effects on natural microbial communities. A review.

    Anna Barra Caracciolo;Edward Topp;Paola Grenni

  • Seasonal relationships among indicator bacteria, pathogenic bacteria, Cryptosporidium oocysts, Giardia cysts, and hydrological indices for surface waters within an agricultural landscape.

    Graham Wilkes;Thomas Edge;Victor Gannon;Cassandra Jokinen

  • Critical knowledge gaps and research needs related to the environmental dimensions of antibiotic resistance.

    D. G.Joakim Larsson;Antoine Andremont;Johan Bengtsson-Palme;Kristian Koefoed Brandt

  • Ecotoxicological assessment of antibiotics: A call for improved consideration of microorganisms.

    Kristian K. Brandt;Alejandro Amézquita;Thomas Backhaus;Alistair B. Boxall

  • Characterization of S-Triazine Herbicide Metabolism by a Nocardioides sp. Isolated from Agricultural Soils

    Edward Topp;Walter M. Mulbry;Hong Zhu;Sarah M. Nour

  • Role played by the environment in the emergence and spread of antimicrobial resistance (AMR) through the food chain

    Konstantinos Koutsoumanis;Ana Allende;Avelino Álvarez-Ordóñez

  • Impact of Feed Supplementation with Antimicrobial Agents on Growth Performance of Broiler Chickens, Clostridium perfringens and Enterococcus Counts, and Antibiotic Resistance Phenotypes and Distribution of Antimicrobial Resistance Determinants in Escherichia coli Isolates

    Moussa S. Diarra;Fred G. Silversides;Fatoumata Diarrassouba;Jane Pritchard

  • Evaluation of denaturing gradient gel electrophoresis in the detection of 16S rDNA sequence variation in rhizobia and methanotrophs

    Tatiana Vallaeys;Edward Topp;Gerard Muyzer;Valérie Macheret

  • Characterization of an atrazine-degrading Pseudaminobacter sp. isolated from Canadian and French agricultural soils.

    Edward Topp;Edward Topp;Hong Zhu;Sarah M. Nour;Sabine Houot

  • Metabolism of the herbicide atrazine by Rhodococcus strains

    Ram Behki;E. Topp;W. Dick;P. Germon

  • Dependence of accelerated degradation of atrazine on soil pH in French and Canadian soils

    Sabine Houot;Edward Topp;Abdellah Yassir;Guy Soulas

  • Environmental contamination in a high-income country (France) by antibiotics, antibiotic-resistant bacteria, and antibiotic resistance genes: Status and possible causes.

    Unknown

  • Impact of Fertilizing with Raw or Anaerobically Digested Sewage Sludge on the Abundance of Antibiotic-Resistant Coliforms, Antibiotic Resistance Genes, and Pathogenic Bacteria in Soil and on Vegetables at Harvest

    Teddie O. Rahube;Romain Marti;Andrew Scott;Yuan-Ching Tien

  • Impact of dairy manure pre-application treatment on manure composition, soil dynamics of antibiotic resistance genes, and abundance of antibiotic-resistance genes on vegetables at harvest.

    Yuan-Ching Tien;Bing Li;Tong Zhang;Andrew Scott

  • Evaluation of QIAamp DNA Stool Mini Kit for ecological studies of gut microbiota

    Mei Li;Jianhua Gong;Michael Cottrill;Hai Yu

  • Distribution and characteristics of Listeria monocytogenes isolates from surface waters of the South Nation River watershed, Ontario, Canada.

    Emilie Lyautey;Emilie Lyautey;David R. Lapen;Graham Wilkes;Katherine McCleary

  • Evaluation of molecular methods used for establishing the interactions and functions of microorganisms in anaerobic bioreactors.

    G. Talbot;E. Topp;M.F. Palin;D.I. Massé

Frequent Co-Authors

David R. Lapen
David R. Lapen Government of Canada
Thomas A. Edge
Thomas A. Edge Environment and Climate Change Canada
Tim A. McAllister
Tim A. McAllister Agriculture and Agriculture-Food Canada
Chris D. Metcalfe
Chris D. Metcalfe Trent University
Alistair B.A. Boxall
Alistair B.A. Boxall University of York
Trevor W. Alexander
Trevor W. Alexander Agriculture and Agriculture-Food Canada
Luke Masson
Luke Masson National Academies of Sciences, Engineering, and Medicine
D. G. Joakim Larsson
D. G. Joakim Larsson University of Gothenburg
Tong Zhang
Tong Zhang University of Hong Kong
John R. Lawrence
John R. Lawrence Environment and Climate Change Canada

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