World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
46
Citations
8718
World Ranking
4626
National Ranking
1608

Helen M. Regan 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 Helen M. Regan 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: 101 publications — 19th percentile

19% of scientists in this discipline score the same or lower.

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

Helen M. Regan 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 Helen M. Regan 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: 46 D-Index — 46th percentile

46% of scientists in this discipline score the same or lower.

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

Overview

Helen M. Regan is affiliated with the University of California, Riverside in the United States. Their research primarily focuses on Environmental Science, with extensive work in areas such as Nature and Landscape Conservation, Ecological Modeling, and Global and Planetary Change. They have also contributed to subfields including Ecology, Evolution, Behavior and Systematics, and Water Science and Technology.

The scientist's work spans multiple topics, prominently including Species Distribution and Climate Change, Ecology and Vegetation Dynamics Studies, Plant and Animal Studies, and Fire Effects on Ecosystems. Additional areas of research involve Water Resources Management and Optimization, Fish Ecology and Management Studies, and Hydrology and Watershed Management Studies.

Recent publications reflect a broad scope of ecological and environmental interests. Notable papers include:

  • "How far can I extrapolate my species distribution model? Exploring shape, a novel method" (2023) published in Ecography
  • "An expanded framework for wildland-urban interfaces and their management" (2022) published in Frontiers in Ecology and the Environment
  • "Ecological Synthesis and Its Role in Advancing Knowledge" (2020) published in BioScience
  • "Rarity, geography, and plant exposure to global change in the California Floristic Province" (2022) published in Global Ecology and Biogeography
  • "Using the Freshwater Health Index to Assess Hydropower Development Scenarios in the Sesan, Srepok and Sekong River Basin" (2020) published in Water

Throughout their career, Helen M. Regan has frequently published in journals such as Frontiers in Ecology and the Environment, Diversity and Distributions, SSRN Electronic Journal, Ecography, and BioScience. The repeated contributions to these venues indicate a consistent engagement with the scientific community focused on ecology, environmental science, and biodiversity.

The scientist collaborates with a range of frequent co-authors, including Janet Franklin, Santiago José Elías Velazco, Miranda Brooke Rose, Kurt E. Anderson, and Alexandra D. Syphard. These collaborations indicate a network enriched by expertise in ecological modeling, species distribution, and conservation science.

Best Publications

  • A TAXONOMY AND TREATMENT OF UNCERTAINTY FOR ECOLOGY AND CONSERVATION BIOLOGY

    Helen M. Regan;Mark Colyvan;Mark A. Burgman

  • Predicting extinction risks under climate change: coupling stochastic population models with dynamic bioclimatic habitat models.

    David A Keith;H. Resit Akçakaya;Wilfried Thuiller;Guy F Midgley

  • Guiding ecological principles for marine spatial planning

    Melissa M. Foley;Benjamin S. Halpern;Fiorenza Micheli;Matthew H. Armsby

  • ROBUST DECISION‐MAKING UNDER SEVERE UNCERTAINTY FOR CONSERVATION MANAGEMENT

    Helen M. Regan;Yakov Ben-Haim;Bill Langford;William G. Wilson

  • Global change and terrestrial plant community dynamics

    Janet Franklin;Josep M. Serra-Diaz;Alexandra D. Syphard;Helen M. Regan

  • Mapping epistemic uncertainties and vague concepts in predictions of species distribution

    Jane Elith;Mark A Burgman;Helen M Regan

  • Buying into conservation: intrinsic versus instrumental value

    James Justus;James Justus;Mark Colyvan;Helen Regan;Lynn A. Maguire

  • Accounting for uncertainty in marine reserve design

    Benjamin S. Halpern;Helen M. Regan;Hugh P. Possingham;Michael A. McCarthy

  • Relationships between human disturbance and wildlife land use in urban habitat fragments.

    Lisa Markovchick-Nicholls;Helen M. Regan;Helen M. Regan;Douglas H. Deutschman;Astrid Widyanata

  • A formal model for consensus and negotiation in environmental management

    Helen M. Regan;Mark Colyvan;Lisa Markovchick-Nicholls

  • Clarifying misconceptions of extinction risk assessment with the IUCN Red List

    Ben Collen;Nicholas K. Dulvy;Kevin J. Gaston;Ulf Gärdenfors

  • The currency and tempo of extinction.

    Helen M. Regan;Richard Lupia;Andrew N. Drinnan;Mark A. Burgman

  • Integrating the social, hydrological and ecological dimensions of freshwater health: The Freshwater Health Index.

    Derek Vollmer;Kashif Shaad;Nicholas J. Souter;Tracy Farrell

  • Big data for forecasting the impacts of global change on plant communities

    Janet Franklin;Josep M. Serra-Diaz;Alexandra D. Syphard;Helen M. Regan

  • Is it a Crime to Belong to a Reference Class

    Mark Colyvan;Helen M. Regan;Scott Ferson

  • Bioclimatic velocity: the pace of species exposure to climate change

    Josep M. Serra-Diaz;Josep M. Serra-Diaz;Janet Franklin;Miquel Ninyerola;Frank W. Davis

  • Effects of wind farms and food scarcity on a large scavenging bird species following an epidemic of bovine spongiform encephalopathy

    Alejandro Martínez-Abraín;Alejandro Martínez-Abraín;Giacomo Tavecchia;H. M. Regan;Juan Francisco Jiménez

  • Role of Ecological Modeling in Risk Assessment

    Robert A. Pastorok;H. Resit Akçakaya;Helen Regan;Scott Ferson

  • Species prioritization for monitoring and management in regional multiple species conservation plans

    Helen M. Regan;Lauren A. Hierl;Janet Franklin;Douglas H. Deutschman

  • Equivalence of methods for uncertainty propagation of real-valued random variables

    Helen M. Regan;Scott Ferson;Daniel Berleant

Frequent Co-Authors

Janet Franklin
Janet Franklin San Diego State University
Mark A. Burgman
Mark A. Burgman Imperial College London
David A. Keith
David A. Keith University of New South Wales
Alexandra D. Syphard
Alexandra D. Syphard Conservation Biology Institute
Mark Colyvan
Mark Colyvan University of Sydney
Sandy J. Andelman
Sandy J. Andelman Conservation International
Tracey J. Regan
Tracey J. Regan Arthur Rylah Institute for Environmental Research
H. Resit Akçakaya
H. Resit Akçakaya Stony Brook University
Stuart H. M. Butchart
Stuart H. M. Butchart BirdLife international, UK
Alan L. Flint
Alan L. Flint United States Geological Survey

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Related Online Degrees & Career Pathways

Studying Ecology and Evolution opens doors to a variety of interdisciplinary career paths. Many graduates find that related fields such as psychology, social work, and mental health counseling offer unique opportunities to combine an understanding of natural systems with human behavior and wellbeing.

If you are interested in the human impact on ecosystems, roles in counseling or psychology might be a good fit. Consider checking out these options for flexible education, such as an masters in social work online or the online masters in psychology. Both programs offer deep insight into human communities, which can complement ecological studies.

For those interested in mental health, an online masters degree in mental health counseling enables you to address individual and societal needs—skills increasingly relevant in environmental advocacy. There’s also an expanding field in forensic psychology, where professionals analyze behaviors related to environmental crimes or policy. Curious about financial prospects? Find out how much does a forensic psychologist make and explore if this is the right path for your future.

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