World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
33
Citations
8561
World Ranking
7748
National Ranking
472

M. Alex Smith 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 M. Alex Smith sits on this spectrum.

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 publications 531+

This scientist: 134 publications — 42nd percentile

42% of scientists in this discipline score the same or lower.

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

M. Alex Smith 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 M. Alex Smith sits on this spectrum.

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: 33 D-Index — 8th percentile

8% of scientists in this discipline score the same or lower.

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

Overview

M. Alex Smith is affiliated with the University of Guelph in Canada and specializes in research within Agricultural and Biological Sciences and Environmental Science. Their work encompasses multiple aspects of ecology, evolution, behavior, systematics, and genetics, contributing to subfields such as Ecology, Insect Science, and Ecological Modeling.

The main topics of their research include:

  • Hymenoptera taxonomy and phylogeny
  • Forest Insect Ecology and Management
  • Lepidoptera: Biology and Taxonomy
  • Insect-Plant Interactions and Control
  • Plant and animal studies
  • Species Distribution and Climate Change
  • Insect and Arachnid Ecology and Behavior

Smith's recent publications illustrate a focus on insect taxonomy, biodiversity, and molecular techniques in ecology. Notable papers include:

  • "Minimalist revision and description of 403 new species in 11 subfamilies of Costa Rican braconid parasitoid wasps, including host records for 219 species" (2021), published in ZooKeys
  • "Torix Rickettsia are widespread in arthropods and reflect a neglected symbiosis" (2021), published in GigaScience
  • "Comparison of traditional and DNA metabarcoding samples for monitoring tropical soil arthropods (Formicidae, Collembola and Isoptera)" (2022), published in Scientific Reports
  • "Using DNA-barcoded Malaise trap samples to measure impact of a geothermal energy project on the biodiversity of a Costa Rican old-growth rain forest" (2020), published in Genome
  • "Diversity and phylogenetic community structure across elevation during climate change in a family of hyperdiverse neotropical beetles (Staphylinidae)" (2021), published in Ecography

Frequent publication venues for Smith include Biodiversity Data Journal, ZooKeys, Biotropica, Diversity, and Biomimetics, indicating a consistent contribution to journals dedicated to biodiversity and biological sciences.

Smith has collaborated extensively with fellow researchers such as Daniel H. Janzen, Winnie Hallwachs, Paul D. N. Hebert, Ramya Manjunath, and Sujeevan Ratnasingham. These collaborations are reflected through numerous coauthored works and suggest an active engagement in team-based research projects.

Best Publications

  • Dispersal and the metapopulation paradigm in amphibian ecology and conservation : are all amphibian populations metapopulations?

    M. Alex Smith;David M. Green

  • DNA barcodes reveal cryptic host-specificity within the presumed polyphagous members of a genus of parasitoid flies (Diptera: Tachinidae)

    M. Alex Smith;Norman E. Woodley;Daniel H. Janzen;Winnie Hallwachs

  • A minimalist barcode can identify a specimen whose DNA is degraded

    Mehrdad Hajibabaei;M. Alex Smith;Daniel H. Janzen;Josephine J. Rodriguez

  • Extreme diversity of tropical parasitoid wasps exposed by iterative integration of natural history, DNA barcoding, morphology, and collections

    M. Alex Smith;Josephine J. Rodriguez;James B. Whitfield;Andrew R. Deans

  • DNA barcoding for effective biodiversity assessment of a hyperdiverse arthropod group: the ants of Madagascar

    M. Alex Smith;Brian L Fisher;Paul D.N Hebert

  • DNA barcodes affirm that 16 species of apparently generalist tropical parasitoid flies (Diptera, Tachinidae) are not all generalists

    M. Alex Smith;D. Monty Wood;Daniel H. Janzen;Winnie Hallwachs

  • Integration of DNA Barcoding Into An Ongoing Inventory of Complex Tropical Biodiversity

    Daniel H. Janzen;Winnie Hallwachs;Patrick Blandin;John M. Burns

  • DNA BARCODING: CO1 DNA barcoding amphibians: take the chance, meet the challenge.

    M. Alex Smith;Nikolai A. Poyarkov;Paul D. N. Hebert

  • Wolbachia and DNA Barcoding Insects: Patterns, Potential, and Problems

    M. Alex Smith;Claudia Bertrand;Kate Crosby;Eldon S. Eveleigh

  • A Revision of Malagasy Species of Anochetus Mayr and Odontomachus Latreille (Hymenoptera: Formicidae)

    Brian L. Fisher;M. Alex Smith

  • Molecular detection of trophic links in a complex insect host-parasitoid food web.

    Jan Hrcek;Scott E. Miller;Donald L. J. Quicke;Donald L. J. Quicke;M. Alex Smith

  • A turbo-taxonomic study of Thai Aleiodes (Aleiodes) and Aleiodes (Arcaleiodes) (Hymenoptera: Braconidae: Rogadinae) based largely on COI barcoded specimens, with rapid descriptions of 179 new species

    Buntika Areekul Butcher;M. Alex Smith;Mike J. Sharkey;Donald L. J. Quicke

  • CO1 DNA barcoding amphibians: take the chance, meet the challenge

    M. Alex Smith;Nikolai A. Poyarkov

  • Review of Apanteles sensu stricto (Hymenoptera, Braconidae, Microgastrinae) from Area de Conservación Guanacaste, northwestern Costa Rica, with keys to all described species from Mesoamerica.

    Jose L. Fernandez-Triana;James B. Whitfield;Josephine J. Rodriguez;M. Alex Smith

  • Sex, isolation and fidelity: unbiased long-distance dispersal in a terrestrial amphibian

    M. Alex Smith;David M. Green

  • Extrapolations from field studies and known faunas converge on dramatically increased estimates of global microgastrine parasitoid wasp species richness (Hymenoptera: Braconidae)

    Josephine J. Rodriguez;Jose L. Fernández-Triana;M. Alex Smith;Daniel H. Janzen

  • DNA barcoding and the taxonomy of Microgastrinae wasps (Hymenoptera, Braconidae): impacts after 8 years and nearly 20 000 sequences.

    M. Alex Smith;J. L. Fernández-Triana;J. L. Fernández-Triana;E. Eveleigh;J. Gómez

  • Minimalist revision and description of 403 new species in 11 subfamilies of Costa Rican braconid parasitoid wasps, including host records for 219 species.

    Michael J. Sharkey;Daniel H. Janzen;Winnie Hallwachs;Eric G. Chapman

  • DNA barcode accumulation curves for understudied taxa and areas.

    M. Alex Smith;Jose Fernandez-Triana;Rob Roughley;Paul D. N. Hebert

  • Invasions, DNA barcodes, and rapid biodiversity assessment using ants of Mauritius

    M Alex Smith;Brian L Fisher

  • Barcoding a quantified food web: crypsis, concepts, ecology and hypotheses.

    M. Alex Smith;Eldon S. Eveleigh;Eldon S. Eveleigh;Kevin S. McCann;Mark T. Merilo

Frequent Co-Authors

Daniel H. Janzen
Daniel H. Janzen University of Pennsylvania
Winnie Hallwachs
Winnie Hallwachs University of Pennsylvania
Paul D. N. Hebert
Paul D. N. Hebert University of Guelph
James B. Whitfield
James B. Whitfield University of Illinois at Urbana-Champaign
Donald L. J. Quicke
Donald L. J. Quicke Chulalongkorn University
Scott E. Miller
Scott E. Miller National Museum of Natural History
Mehrdad Hajibabaei
Mehrdad Hajibabaei University of Guelph
Kevin S. McCann
Kevin S. McCann University of Guelph
Mark R Shaw
Mark R Shaw National Museum of Natural History
Brian L. Fisher
Brian L. Fisher California Academy of Sciences

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Related Online Degrees & Career Pathways

Exploring Ecology and Evolution can open doors to diverse career pathways, many of which intersect with other fields such as psychology, counseling, and human services. For those interested in the relationship between humans and their environment, degrees in psychology and social services can complement your studies.

If you are passionate about supporting young people and understanding behavioral trends, consider a masters in child psychology online. This program can deepen your understanding of human development and mental health, skills valuable for environmental educators or community outreach coordinators.

Roles that involve direct support or counseling, such as environmental counseling or advocacy, may benefit from an online master's in counseling or specialized clinical psychology programs online. These degrees provide strong foundations for helping others navigate ecological challenges, mental health issues, or climate-related anxieties.

For a broader approach to supporting individuals and communities, an online degree in human services can prepare you for work in non-profits, government agencies, or community organizations, often alongside ecological initiatives.

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