World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
49
Citations
7445
World Ranking
5340
National Ranking
1952

Joshua T. Ackerman publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Joshua T. Ackerman sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 197 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Joshua T. Ackerman D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Joshua T. Ackerman sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 49 D-Index — 47th percentile

47% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Joshua T. Ackerman is affiliated with the United States Geological Survey in the United States. Their research centers primarily on Environmental Science, with a strong focus on Ecology and related subfields such as Health, Toxicology and Mutagenesis, Global and Planetary Change, Ecology, Evolution, Behavior and Systematics, and Epidemiology.

The scientist's main topics of work include:

  • Avian ecology and behavior
  • Mercury impact and mitigation studies
  • Wildlife Ecology and Conservation
  • Marine animal studies overview
  • Influenza Virus Research Studies
  • Bird parasitology and diseases
  • Animal Behavior and Reproduction

Joshua T. Ackerman has contributed scholarly articles to a variety of journals. Frequent publication venues include:

  • Ecology and Evolution
  • San Francisco Estuary and Watershed Science
  • Journal of Wildlife Management
  • Environmental Science & Technology
  • The Wilson Journal of Ornithology

Some of their recent papers are:

  • Ecological insights from three decades of animal movement tracking across a changing Arctic, 2020, Science
  • Demethylation of Methylmercury in Bird, Fish, and Earthworm, 2021, Environmental Science & Technology
  • Mercury contamination and potential health risks to Arctic seabirds and shorebirds, 2022, The Science of The Total Environment
  • Influenza A viruses remain infectious for more than seven months in northern wetlands of North America, 2020, Proceedings of the Royal Society B Biological Sciences
  • A National-Scale Assessment of Mercury Bioaccumulation in United States National Parks Using Dragonfly Larvae As Biosentinels through a Citizen-Science Framework, 2020, Environmental Science & Technology

The scientist frequently collaborates with several co-authors, including:

  • Mark P. Herzog
  • Michael L. Casazza
  • Sarah H. Peterson
  • C. Alex Hartman
  • Cory T. Overton

Best Publications

  • Avian mercury exposure and toxicological risk across western North America: A synthesis.

    Joshua T. Ackerman;Collin A. Eagles-Smith;Mark P. Herzog;C. Alex Hartman

  • Current state of knowledge on biological effects from contaminants on arctic wildlife and fish

    Rune Dietz;Robert J. Letcher;Jean Pierre Desforges;Igor Eulaers

  • Spatial and temporal patterns of mercury concentrations in freshwater fish across the Western United States and Canada.

    Collin A. Eagles-Smith;Joshua T. Ackerman;James J. Willacker;Michael T. Tate

  • Mercury in western North America: A synthesis of environmental contamination, fluxes, bioaccumulation, and risk to fish and wildlife.

    Collin A. Eagles-Smith;James G. Wiener;Chris S. Eckley;James J. Willacker

  • Methylmercury exposure in wildlife: A review of the ecological and physiological processes affecting contaminant concentrations and their interpretation.

    John Chételat;Joshua T. Ackerman;Collin A. Eagles-Smith;Craig E. Hebert

  • Mercury demethylation in waterbird livers: dose-response thresholds and differences among species.

    Collin A. Eagles-Smith;Joshua T. Ackerman;Julie Yee;Terrence L. Adelsbach

  • Mercury correlations among six tissues for four waterbird species breeding in San Francisco Bay, California, USA.

    Collin A. Eagles-Smith;Joshua T. Ackerman;Terrence L. Adelsbach;John Y. Takekawa

  • Tidal Influence on Spatial Dynamics of Leopard Sharks, Triakis semifasciata, in Tomales Bay, California

    Joshua T. Ackerman;Matthew C. Kondratieff;Scott A. Matern;Joseph J. Jr. Cech

  • Effects of investigator disturbance on hatching success and nest-site fidelity in a long-lived seabird, Leach's storm-petrel

    Alexis L Blackmer;Joshua T Ackerman;Gabrielle A Nevitt

  • Bird Mercury Concentrations Change Rapidly as Chicks Age: Toxicological Risk is Highest at Hatching and Fledging

    Joshua T. Ackerman;Collin A. Eagles-Smith;Mark P. Herzog

  • Maternal transfer of contaminants in birds: Mercury and selenium concentrations in parents and their eggs.

    Joshua T. Ackerman;Collin A. Eagles-Smith;Mark P. Herzog;C. Alex Hartman

  • Mercury bioaccumulation and risk to three waterbird foraging guilds is influenced by foraging ecology and breeding stage.

    Collin A. Eagles-Smith;Joshua T. Ackerman;Susan E.W. De La Cruz;John Y. Takekawa

  • Exploring individual quality: Basal metabolic rate and reproductive performance in storm-petrels

    Alexis L. Blackmer;Robert A. Mauck;Joshua T. Ackerman;Charles E. Huntington

  • Ecological insights from three decades of animal movement tracking across a changing Arctic

    Sarah C. Davidson;Sarah C. Davidson;Sarah C. Davidson;Gil Bohrer;Eliezer Gurarie;Eliezer Gurarie;Scott LaPoint;Scott LaPoint

  • Methylmercury is the predominant form of mercury in bird eggs: a synthesis

    Joshua T. Ackerman;Mark P. Herzog;Steven E. Schwarzbach

  • Vocal Activity as a Low Cost and Scalable Index of Seabird Colony Size

    Abraham L. Borker;Matthew W. Mckown;Joshua T. Ackerman;Collin A. Eagles-Smith

  • Mercury contamination and potential health risks to Arctic seabirds and shorebirds.

    Unknown

  • Mercury concentrations in blood and feathers of prebreeding Forster's terns in relation to space use of San Francisco Bay, California, USA, habitats.

    Joshua T. Ackerman;Collin A. Eagles-Smith;Collin A. Eagles-Smith;John Y. Takekawa;Jill D. Bluso

  • Of mice and mallards: positive indirect effects of coexisting prey on waterfowl nest success

    Joshua T. Ackerman

  • Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study.

    Lisamarie Windham-Myers;Jacob A. Fleck;Joshua T. Ackerman;Mark C. Marvin-DiPasquale

  • Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos).

    Nichola J. Hill;Nichola J. Hill;Nichola J. Hill;John Y. Takekawa;Joshua T. Ackerman;Keith A. Hobson

  • Mercury concentrations and space use of pre-breeding American avocets and black-necked stilts in San Francisco Bay.

    Joshua T. Ackerman;Collin A. Eagles-Smith;John Y. Takekawa;Scott A. Demers

Frequent Co-Authors

Collin A. Eagles-Smith
Collin A. Eagles-Smith United States Geological Survey
John Y. Takekawa
John Y. Takekawa United States Geological Survey
John M. Eadie
John M. Eadie University of California, Davis
David C. Evers
David C. Evers University of Minnesota
Daniel P. Costa
Daniel P. Costa University of California, Santa Cruz
Walter M. Boyce
Walter M. Boyce University of California, Davis
Charles N. Alpers
Charles N. Alpers United States Geological Survey
David P. Krabbenhoft
David P. Krabbenhoft United States Geological Survey
Gary H. Heinz
Gary H. Heinz United States Fish and Wildlife Service
Bjørn Munro Jenssen
Bjørn Munro Jenssen Norwegian University of Science and Technology

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