World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
42
Citations
7794
World Ranking
5518
National Ranking
1891

Karen S. Oberhauser 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 Karen S. Oberhauser 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: 128 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

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

Karen S. Oberhauser 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 Karen S. Oberhauser 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: 42 D-Index — 35th percentile

35% of scientists in this discipline score the same or lower.

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

Overview

Karen S. Oberhauser is affiliated with the University of Wisconsin-Madison in the United States. Their research spans multiple fields within biological and environmental sciences, focusing primarily on the ecology and behavior of insects, especially butterflies.

Their main fields of study include:

  • Agricultural and Biological Sciences
  • Environmental Science
  • Biochemistry, Genetics and Molecular Biology

Within these areas, their subfields of study are:

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Ecological Modeling
  • Health, Toxicology and Mutagenesis
  • Nature and Landscape Conservation

The scientist's primary topics of work cover:

  • Plant and animal studies
  • Species Distribution and Climate Change
  • Insect and Arachnid Ecology and Behavior
  • Animal Behavior and Reproduction
  • Ecology and Vegetation Dynamics Studies
  • Wildlife-Road Interactions and Conservation
  • Genetic diversity and population structure

Recent papers authored or coauthored by Karen S. Oberhauser include:

  • "Changes in climate drive recent monarch butterfly dynamics," 2021, Nature Ecology & Evolution
  • "Traffic influences nutritional quality of roadside plants for monarch caterpillars," 2020, The Science of The Total Environment
  • "Assessing zinc tolerance in two butterfly species: consequences for conservation in polluted environments," 2020, Insect Conservation and Diversity
  • "Monarch Habitat in Conservation Grasslands," 2020, Frontiers in Ecology and Evolution
  • "Divergent responses of butterflies and bees to burning and grazing management in tallgrass prairies," 2022, Ecology and Evolution

Frequent co-authors include:

  • Emilie C. Snell-Rood (6 collaborations)
  • Timothy S. Mitchell (5 collaborations)
  • M. Isabel Ramírez (3 collaborations)
  • Lauren Agnew (3 collaborations)
  • Wayne E. Thogmartin (3 collaborations)

Their scholarly output appears in publication venues such as:

  • Insect Conservation and Diversity (3 publications)
  • Frontiers in Ecology and Evolution (2 publications)
  • Nature Ecology & Evolution (1 publication)
  • The Science of The Total Environment (1 publication)
  • Ecology and Evolution (1 publication)

Karen S. Oberhauser has also contributed to book publications, including the work titled "Evaluating the Suitability of Roadway Corridors for Use by Monarch Butterflies," published in 2020 by Transportation Research Board eBooks.

Best Publications

  • Impact of Bt corn pollen on monarch butterfly populations: A risk assessment

    Mark K. Sears;Richard L. Hellmich;Diane E. Stanley-Horn;Karen S. Oberhauser

  • Milkweed loss in agricultural fields because of herbicide use: effect on the monarch butterfly population

    John M. Pleasants;Karen S. Oberhauser

  • Characteristics of professional development that effect change in secondary science teachers' classroom practices

    Bobby Jeanpierre;Karen S Oberhauser;Carol Freeman

  • Temporal and spatial overlap between monarch larvae and corn pollen

    Karen S Oberhauser;Michelle D. Prysby;Heather R. Mattila;Diane E. Stanley-Horn

  • Bioenergy and Wildlife: Threats and Opportunities for Grassland Conservation

    Joseph E. Fargione;Thomas R. Cooper;David J. Flaspohler;Jason Hill

  • Associations between host migration and the prevalence of a protozoan parasite in natural populations of adult monarch butterflies

    Sonia M. Altizer;Karen S. Oberhauser;Lincoln P. Brower

  • Monarch butterfly population decline in North America: identifying the threatening processes.

    Wayne E. Thogmartin;Ruscena Wiederholt;Karen Oberhauser;Ryan G. Drum

  • Effects of spermatophores on male and female monarch butterfly reproductive success

    Karen S. Oberhauser

  • Modeling current and future potential wintering distributions of eastern North American monarch butterflies.

    Karen S Oberhauser;A. Townsend Peterson

  • Quasi-extinction risk and population targets for the Eastern, migratory population of monarch butterflies (Danaus plexippus).

    Brice X. Semmens;Darius J. Semmens;Wayne E. Thogmartin;Ruscena Wiederholt

  • Effects of photoperiod, temperature, and host plant age on induction of reproductive diapause and development time in Danaus plexippus

    Liz Goehring;Karen S. Oberhauser

  • Monarch butterfly migration and parasite transmission in eastern North America.

    Rebecca A. Bartel;Karen S. Oberhauser;Jacobus C. de Roode;Sonia M. Altizer

  • Effects of the protozoan parasite ophryocystis elektroscirrha on the fitness of monarch butterflies (Danaus plexippus)

    Sonia M. Altizer;Karen S. Oberhauser

  • Restoring monarch butterfly habitat in the Midwestern US: ?all hands on deck?

    Wayne E. Thogmartin;Laura Lopez-Hoffman;Jason J. Rohweder;James E. Diffendorfer

  • A trans‐national monarch butterfly population model and implications for regional conservation priorities

    Karen Oberhauser;Ruscena Wiederholt;James E. Diffendorfer;Darius J. Semmens

  • Conservation Volunteers’ Connection to Nature

    Margaret Savanick Guiney;Karen S. Oberhauser

  • Ecological niches in sequential generations of eastern North American monarch butterflies (Lepidoptera: Danaidae): the ecology of migration and likely climate change implications.

    Rebecca V. Batalden;Karen S Oberhauser;A. Townsend Peterson

  • Fecundity, lifespan and egg mass in butterflies: Effects of male-derived nutrients and female size

    Karen S Oberhauser

  • Male monarch butterfly spermatophore mass and mating strategies

    Karen S. Oberhauser

  • Monarchs in decline: a collateral landscape-level effect of modern agriculture.

    Carl Stenoien;Kelly R. Nail;Jacinta M. Zalucki;Hazel Parry

  • Monarchs in a Changing World: Biology and Conservation of an Iconic Butterfly

    Karen S. Oberhauser;Kelly R. Nail;Sonia Altizer

Frequent Co-Authors

Sonia Altizer
Sonia Altizer University of Georgia
Wayne E. Thogmartin
Wayne E. Thogmartin United States Geological Survey
Orley R. Taylor
Orley R. Taylor University of Kansas
Lincoln P. Brower
Lincoln P. Brower Sweet Briar College
Leslie Ries
Leslie Ries Georgetown University
Myron P. Zalucki
Myron P. Zalucki University of Queensland
Brice X. Semmens
Brice X. Semmens University of California, San Diego
Elise F. Zipkin
Elise F. Zipkin Michigan State University
A. Townsend Peterson
A. Townsend Peterson University of Kansas
Galen P. Dively
Galen P. Dively University of Maryland, College Park

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

Exploring online education can open up diverse career opportunities for students interested in Ecology and Evolution. While specialized programs in these fields are growing, many students also consider related disciplines that blend ecology, research, history, and communication.

For those drawn to historical perspectives on environmental change, best online history masters programs sometimes offer interdisciplinary topics relevant to ecological studies. Graduates can pursue roles in research, education, or science communication.

Environmental professionals may also benefit from information management expertise. When considering the average cost of mlis degree us, Library and Information Science programs teach valuable archival, curation, and data management skills that are widely applicable in research and conservation careers.

Communication is increasingly important for scientists. The field of speech-language pathology (SLP) has seen a rise in asha accredited online slp programs, and for those without a background in SLP, there are slp bridge programs that can help transition from other science or communication fields.

As the job market evolves, related online degrees can enhance employment prospects for students in ecology, conservation, education, and public engagement.

Best Scientists Citing Karen S. Oberhauser

Trending Scientists

Recently Published Articles