World's Best Scientists 2026 revealed!
VIEW LIST
Tony D. Williams

Tony D. Williams

Simon Fraser University
Canada

D-Index & Metrics

Ecology and Evolution

D-Index
68
Citations
14879
World Ranking
1541
National Ranking
90

Tony D. Williams 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 Tony D. Williams 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: 343 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

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

Tony D. Williams 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 Tony D. Williams 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: 68 D-Index — 82nd percentile

82% of scientists in this discipline score the same or lower.

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

Overview

Tony D. Williams is affiliated with Simon Fraser University in Canada. Their research spans primarily across Environmental Science and Agricultural and Biological Sciences, with a significant focus on Ecology, Ecology, Evolution, Behavior and Systematics, Health, Toxicology and Mutagenesis, Parasitology, and Global and Planetary Change.

The scientist's work covers several main research topics including:

  • Avian ecology and behavior
  • Animal Behavior and Reproduction
  • Bird parasitology and diseases
  • Toxic Organic Pollutants Impact
  • Mercury impact and mitigation studies
  • Plant and animal studies
  • Physiological and biochemical adaptations

Williams has collaborated frequently with several co-authors over the years, including:

  • John E. Elliott
  • Mason D. King
  • Marty L. Leonard
  • Márk E. Hauber
  • Helen F. James

Publication venues where Williams has contributed multiple times include:

  • The Auk
  • Journal of Experimental Biology
  • Canadian journal of optometry/CJO. Canadian journal of optometry
  • Coastal Engineering Proceedings
  • The Science of The Total Environment

Selected recent papers from Williams' research portfolio are:

  • Effects of petroleum exposure on birds: A review (2020), published in The Science of The Total Environment
  • Innovations in Coastline Management With Natural and Nature-Based Features (NNBF): Lessons Learned From Three Case Studies (2022), published in Frontiers in Built Environment
  • Review of petroleum toxicity and identifying common endpoints for future research on diluted bitumen toxicity in marine mammals (2021), published in Ecotoxicology
  • Life history and environment predict variation in testosterone across vertebrates (2021), published in Evolution
  • Review of petroleum toxicity in marine reptiles (2021), published in Ecotoxicology

Best Publications

  • INTRASPECIFIC VARIATION IN EGG SIZE AND EGG COMPOSITION IN BIRDS: EFFECTS ON OFFSPRING FITNESS

    Unknown

  • Individual variation in endocrine systems: moving beyond the 'tyranny of the Golden Mean'.

    Tony D Williams

  • Life history and the ecology of stress: how do glucocorticoid hormones influence life-history variation in animals?

    Erica J. Crespi;Tony D. Williams;Tim S. Jessop;Brendan Delehanty

  • Stress hormones: a link between maternal condition and sex-biased reproductive investment.

    Oliver P. Love;Eunice H. Chin;Katherine E. Wynne‐Edwards;Tony D. Williams

  • Mechanisms Underlying the Costs of Egg Production

    Tony D. Williams

  • Physiological Adaptations for Breeding in Birds

    Tony D. Williams

  • The Adaptive Value of Stress‐Induced Phenotypes: Effects of Maternally Derived Corticosterone on Sex‐Biased Investment, Cost of Reproduction, and Maternal Fitness

    Oliver P. Love;Tony D. Williams

  • Mediation of a corticosterone-induced reproductive conflict

    Oliver P Love;Creagh W Breuner;François Vézina;Tony D Williams

  • Plasticity in the adrenocortical response of a free-living vertebrate: the role of pre- and post-natal developmental stress.

    Oliver P. Love;Tony D. Williams

  • Applying the Declining Population Paradigm: Diagnosing Causes of Poor Reproduction in the Marbled Murrelet

    M. Zachariah Peery;Steven R. Beissinger;Scott H. Newman;Esther B. Burkett

  • Evolutionary Endocrinology: The Developing Synthesis between Endocrinology and Evolutionary Genetics

    Anthony J. Zera;Lawrence G. Harshman;Tony D. Williams

  • Corticosterone predicts foraging behavior and parental care in macaroni penguins.

    Glenn Terrence. Crossin;Phil N. Trathan;Richard A. Phillips;Kristen B. Gorman

  • Indirect predator effects on clutch size and the cost of egg production

    Marc Travers;Marc Travers;Michael Clinchy;Liana Zanette;Rudy Boonstra

  • The Penguins: Spheniscidae

    Unknown

  • Adrenocortical responses in zebra finches (Taeniopygia guttata): Individual variation, repeatability, and relationship to phenotypic quality

    Haruka Wada;Katrina G. Salvante;Christine Stables;Emily Wagner

  • EXTRINSIC AND INTRINSIC SOURCES OF VARIATION IN PLASMA LIPID METABOLITES OF FREE-LIVING WESTERN SANDPIPERS (CALIDRIS MAURI)

    Christopher G. Guglielmo;Patrick D. O'Hara;Tony D. Williams

  • Environmental degradation, food limitation and reproductive output: juvenile survival in lesser snow geese

    T. D. Williams;E. G. Cooch;R. L. Jefferies;F. Cooke

  • Wind assistance: A requirement for migration of shorebirds?

    Robert W. Butler;Tony D. Williams;Nils Warnock;Mary Anne Bishop

  • Plasma Lipid Metabolites Provide Information on Mass Change Over Several Days in Captive Western Sandpipers

    Tony D. Williams;Christopher G. Guglielmo;Oliver Egeler;Christopher J. Martyniuk

  • The Penguins: Spheniscidae

    Unknown

  • Local adaptation of timing of reproduction: females are in the driver's seat

    Samuel P. Caro;Anne Charmantier;Marcel M. Lambrechts;Jacques Blondel

  • Annual variation in breeding biology of macaroni penguins, Eudyptes chvysolophus, at Bird Island, South Georgia

    T. D. Williams;J. P. Croxall

  • A sport-physiological perspective on bird migration: evidence for flight-induced muscle damage.

    Christopher G. Guglielmo;Theunis Piersma;Tony D. Williams

  • Do Female Zebra Finches Vary Primary Reproductive Effort in Relation to Mate Attractiveness

    Alison L. Balzer;Tony D. Williams

Frequent Co-Authors

John E. Elliott
John E. Elliott Environment and Climate Change Canada
Oliver P. Love
Oliver P. Love University of Windsor
Christopher G. Guglielmo
Christopher G. Guglielmo University of Western Ontario
Robert J. Letcher
Robert J. Letcher Carleton University
Michaela Hau
Michaela Hau University of Konstanz
Richard A. Phillips
Richard A. Phillips British Antarctic Survey
Phil N. Trathan
Phil N. Trathan British Antarctic Survey
Jerry F. Husak
Jerry F. Husak University of St. Thomas - Minnesota
Lynn B. Martin
Lynn B. Martin University of South Florida
Wolfgang Goymann
Wolfgang Goymann Max Planck Society

External Links

Wikipedia of Tony D. Williams

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Studying Ecology and Evolution can open doors to diverse career paths, many of which now benefit from flexible online education. For those with unique needs, such as active duty service members or veterans, military friendly online colleges offer tailored programs that accommodate demanding schedules and locations.

Related fields like social work provide options to integrate ecological perspectives with community advocacy. If you're interested in merging environmental awareness with social impact, social work master programs online can prepare you for roles that address environmental and human wellbeing together.

Fast-tracking your education is another possibility. Accelerated psychology masters programs and online masters mental health counseling degrees allow you to develop skills relevant to conservation psychology or environmental counseling in less time.

Whether you seek an interdisciplinary pathway or a specialized environmental focus, many online degrees are designed to meet different needs—helping you qualify for rewarding careers that make a positive impact.

Best Scientists Citing Tony D. Williams

Christopher G. Guglielmo

Christopher G. Guglielmo

University of Western Ontario

Publications: 66

Olivier Chastel

Olivier Chastel

Centre national de la recherche scientifique, CNRS

Publications: 52

Frédéric Angelier

Frédéric Angelier

Centre national de la recherche scientifique, CNRS

Publications: 49

John C. Wingfield

John C. Wingfield

University of California, Davis

Publications: 45

Steven J. Cooke

Steven J. Cooke

Carleton University

Publications: 39

Theunis Piersma

Theunis Piersma

University of Groningen

Publications: 38

Ton G. G. Groothuis

Ton G. G. Groothuis

University of Groningen

Publications: 36

Marcel E. Visser

Marcel E. Visser

University of Groningen

Publications: 36

Oliver P. Love

Oliver P. Love

University of Windsor

Publications: 35

David B. Lank

David B. Lank

Simon Fraser University

Publications: 35

Ignacio T. Moore

Ignacio T. Moore

Virginia Tech

Publications: 34

David Costantini

David Costantini

French National Museum of Natural History

Publications: 33

Creagh W. Breuner

Creagh W. Breuner

University of Montana

Publications: 32

Tamás Székely

Tamás Székely

University of Bath

Publications: 32

Michaela Hau

Michaela Hau

University of Konstanz

Publications: 31

Ellen D. Ketterson

Ellen D. Ketterson

Indiana University

Publications: 29

Trending Scientists

Yewang Su

Yewang Su

University of Chinese Academy of Sciences

Montgomery Slatkin

Montgomery Slatkin

University of California, Berkeley

Sean V. Tavtigian

Sean V. Tavtigian

University of Utah

Suniya S. Luthar

Suniya S. Luthar

Columbia University

Gustavo Yepes

Gustavo Yepes

Autonomous University of Madrid

Douglas Cheyne

Douglas Cheyne

University of Toronto

Anna H. Kaksonen

Anna H. Kaksonen

Commonwealth Scientific and Industrial Research Organisation

Robert J. Nicholls

Robert J. Nicholls

University of East Anglia

David B. Watson

David B. Watson

Oak Ridge National Laboratory

Kenneth R. McLeish

Kenneth R. McLeish

University of Louisville

Russell Wallis

Russell Wallis

University of Leicester

Dorin Comaniciu

Dorin Comaniciu

Siemens (United States)

Alok Choudhary

Alok Choudhary

Northwestern University

Subhabrata Sen

Subhabrata Sen

AT&T (United States)

Jean-Guy J. Godin

Jean-Guy J. Godin

Carleton University

Domenico Umbrello

Domenico Umbrello

University of Calabria

Related Ecology and Evolution Rankings & Guides

2026 How to Become a Librarian in Virginia

2026 How to Become a Librarian in Virginia
2026 Most Popular Concentrations in Education Degrees

2026 Most Popular Concentrations in Education Degrees
2026 How to Become an Instructional Coach: Education, Salary, and Job Outlook

2026 How to Become an Instructional Coach: Education, Salary, and Job Outlook
2026 What Can You Do With a Bachelor’s Degree In Early Childhood Education?

2026 What Can You Do With a Bachelor’s Degree In Early Childhood Education?
2026 Most Affordable Online Ed.D Programs

2026 Most Affordable Online Ed.D Programs
2026 Cheapest Way to Get a Teaching Credential in Boston, MA: Degree Requirements & Certification

2026 Cheapest Way to Get a Teaching Credential in Boston, MA: Degree Requirements & Certification
2026 Most Affordable Online Education Degrees

2026 Most Affordable Online Education Degrees
2026 How to Become a Special Education Teacher in Colorado: Requirements & Certification

2026 How to Become a Special Education Teacher in Colorado: Requirements & Certification
2026 How to Become a PE Teacher: Salary & Career Paths

2026 How to Become a PE Teacher: Salary & Career Paths
2026 Library Science Degree Master's Programs You Can Start Without Meeting All Requirements

2026 Library Science Degree Master's Programs You Can Start Without Meeting All Requirements
2026 Substitute Teaching License & Requirements in Georgia

2026 Substitute Teaching License & Requirements in Georgia
2026 Credit Requirements for a Library Science Degree Explained

2026 Credit Requirements for a Library Science Degree Explained
2026 Best Online Education Degree Programs

2026 Best Online Education Degree Programs
2026 How to Become a Special Education Teacher in North Las Vegas, NV: Education Requirements & Certification

2026 How to Become a Special Education Teacher in North Las Vegas, NV: Education Requirements & Certification
2026 Best Online Education Specialist (Ed.S.) Degrees

2026 Best Online Education Specialist (Ed.S.) Degrees
2026 Can You Get Into a Teaching Program with a Low GPA? Admission Chances & Workarounds

2026 Can You Get Into a Teaching Program with a Low GPA? Admission Chances & Workarounds
2026 Most Affordable Online ESL Degree Programs

2026 Most Affordable Online ESL Degree Programs
2026 What Can You Do With a Master’s in Early Childhood Education?

2026 What Can You Do With a Master’s in Early Childhood Education?
2026 Educational Consultants: What They Do & How to Become One

2026 Educational Consultants: What They Do & How to Become One
2026 Secondary Education Degree Master's Programs You Can Get Into Right Now (Eligibility-Based Matches)

2026 Secondary Education Degree Master's Programs You Can Get Into Right Now (Eligibility-Based Matches)
2026 Online vs On-Campus Elementary Education Degree Programs: Pros & Cons

2026 Online vs On-Campus Elementary Education Degree Programs: Pros & Cons

Recently Published Articles

2026 Online Healthcare Administration Degree Programs Costs: Tuition & Fees

2026 Online Healthcare Administration Degree Programs Costs: Tuition & Fees
2026 Best California Online MBA Degree Programs

2026 Best California Online MBA Degree Programs
2026 Highest Paying Careers With a Healthcare Administration Bachelor's Degree

2026 Highest Paying Careers With a Healthcare Administration Bachelor's Degree
2026 Different Types of Animal Science Degrees and Their Salaries

2026 Different Types of Animal Science Degrees and Their Salaries
2026 Human Services Programs With Placement Support for Practicum or Clinicals

2026 Human Services Programs With Placement Support for Practicum or Clinicals
2026 Online SLP Programs With Summer Start Dates or Rolling Admissions

2026 Online SLP Programs With Summer Start Dates or Rolling Admissions
2026 Most Affordable Online AGNP Programs

2026 Most Affordable Online AGNP Programs
2026 Online Health Sciences Bachelor's Degree Programs With 8-Week Classes

2026 Online Health Sciences Bachelor's Degree Programs With 8-Week Classes
2026 Best Online Anthropology Degree Programs

2026 Best Online Anthropology Degree Programs
2026 Cheapest Online Political Science Master's Degrees That Pay Well: Tuition, Duration, and Earnings

2026 Cheapest Online Political Science Master's Degrees That Pay Well: Tuition, Duration, and Earnings
2026 AI Doctorate Degrees for Executives and Senior Leaders

2026 AI Doctorate Degrees for Executives and Senior Leaders
2026 How Much Do Medical Assistant Programs & Certifications Cost?

2026 How Much Do Medical Assistant Programs & Certifications Cost?
2026 Fastest Online Bachelor's in Mathematics Degree Programs

2026 Fastest Online Bachelor's in Mathematics Degree Programs
2026 Best BCBA Degree Programs & Schools Certification (In-Person & Online)

2026 Best BCBA Degree Programs & Schools Certification (In-Person & Online)
2026 LMFT vs LCSW: Explaining the Difference

2026 LMFT vs LCSW: Explaining the Difference
2026 Doctor of Business Administration (DBA) Salary

2026 Doctor of Business Administration (DBA) Salary
2026 Cheapest Way to Get a Teaching Credential in Chandler, AZ: Degree Requirements & Certification

2026 Cheapest Way to Get a Teaching Credential in Chandler, AZ: Degree Requirements & Certification
2026 Online Environmental Engineering Bachelor's Degree Programs With Open Enrollment

2026 Online Environmental Engineering Bachelor's Degree Programs With Open Enrollment
2026 Easy Certifications That Pay Well

2026 Easy Certifications That Pay Well
2026 Can You Get a Forensic Science Degree Master's Without a Related Bachelor's Degree?

2026 Can You Get a Forensic Science Degree Master's Without a Related Bachelor's Degree?
2026 How to Become a Medical Biller & Coder in Reno, NV: Education Requirements & Certification

2026 How to Become a Medical Biller & Coder in Reno, NV: Education Requirements & Certification