World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
65
Citations
20438
World Ranking
1750
National Ranking
641

Karl E. Havens 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 Karl E. Havens 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: 207 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Karl E. Havens 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 Karl E. Havens 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: 65 D-Index — 79th percentile

79% of scientists in this discipline score the same or lower.

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

Overview

Karl E. Havens was affiliated with the University of Florida in the United States and contributed to research primarily in the fields of Environmental Science and Earth and Planetary Sciences. Their work spanned several subfields including Oceanography, Environmental Chemistry, Nature and Landscape Conservation, Ecology, and Atmospheric Science.

The scientist focused extensively on topics related to marine and coastal ecosystems, aquatic ecosystems and phytoplankton dynamics, oceanographic and atmospheric processes, fish ecology and management studies, soil and water nutrient dynamics, coastal wetland ecosystem dynamics, and tropical and extratropical cyclones research.

Among the recent papers coauthored by Karl E. Havens were:

  • Deeper waters are changing less consistently than surface waters in a global analysis of 102 lakes, 2020, Scientific Reports
  • Hurricanes, El Niño and harmful algal blooms in two sub-tropical Florida estuaries: Direct and indirect impacts, 2020, Scientific Reports
  • Toward predicting climate change effects on lakes: a comparison of 1656 shallow lakes from Florida and Denmark reveals substantial differences in nutrient dynamics, metabolism, trophic structure, and top-down control, 2020, Inland Waters
  • It Takes Two to Tango: When and Where Dual Nutrient (N & P) Reductions Are Needed to Protect Lakes and Downstream Ecosystems, 2020, UNC Libraries
  • Global data set of long-term summertime vertical temperature profiles in 153 lakes, 2021, Scientific Data

Karl E. Havens frequently published in the following venues:

  • EDIS
  • UNC Libraries
  • Scientific Reports
  • Inland Waters
  • Scientific Data

Frequent co-authors included:

  • Ashley R. Smyth
  • Haywood Dail Laughinghouse
  • Hans W. Paerl
  • Rachel M. Pilla
  • Craig E. Williamson

Their research involved integrating various environmental processes and ecosystem dynamics, often addressing nutrient dynamics, harmful algal blooms, and the effects of climate phenomena such as hurricanes and El Niño on aquatic systems.

Best Publications

  • Controlling Eutrophication: Nitrogen and Phosphorus

    Daniel J. Conley;Hans W. Paerl;Robert W. Howarth;Donald F. Boesch

  • Lake responses to reduced nutrient loading - an analysis of contemporary long-term data from 35 case studies

    Erik Jeppesen;Martin Søndergaard;Jens Peder Jensen;Karl E. Havens

  • Rapid and highly variable warming of lake surface waters around the globe

    Catherine M. O'Reilly;Sapna Sharma;Derek K. Gray;Stephanie E. Hampton

  • Allied attack: climate change and eutrophication

    B. Moss;S. Kosten;M. Meerhoff;R.W. Battarbee

  • It Takes Two to Tango: When and Where Dual Nutrient (N & P) Reductions Are Needed to Protect Lakes and Downstream Ecosystems

    Hans W. Paerl;J. Thad Scott;Mark J. McCarthy;Silvia E. Newell

  • Mitigating cyanobacterial harmful algal blooms in aquatic ecosystems impacted by climate change and anthropogenic nutrients.

    Hans W. Paerl;Wayne S. Gardner;Karl E. Havens;Alan R. Joyner

  • N:P ratios, light limitation, and cyanobacterial dominance in a subtropical lake impacted by non-point source nutrient pollution

    Karl E. Havens;R.Thomas James;Therese L. East;Val H. Smith

  • Cyanobacteria blooms: effects on aquatic ecosystems.

    Karl E Havens

  • Scale and structure in natural food webs.

    Karl Havens

  • Nutrient dynamics and the eutrophication of shallow lakes Kasumigaura (Japan), Donghu (PR China), and Okeechobee (USA).

    K.E Havens;T Fukushima;P Xie;T Iwakuma

  • Crustacean zooplankton in lakes and reservoirs of temperate and tropical regions: variation with trophic status

    Ricardo Pinto-Coelho;Bernadette Pinel-Alloul;Ginette Méthot;Karl E Havens

  • A global database of lake surface temperatures collected by in situ and satellite methods from 1985–2009

    Sapna Sharma;Derek K. Gray;Jordan S. Read;Catherine M. O'Reilly

  • Complex interactions between autotrophs in shallow marine and freshwater ecosystems: implications for community responses to nutrient stress.

    K.E. Havens;J. Hauxwell;A.C. Tyler;S. Thomas

  • Light availability as a possible regulator of cyanobacteria species composition in a shallow subtropical lake

    Karl E. Havens;Edward J. Phlips;Mary F. Cichra;Bai‐lian Li

  • Mitigating eutrophication and toxic cyanobacterial blooms in large lakes: The evolution of a dual nutrient (N and P) reduction paradigm

    Hans W. Paerl;Hans W. Paerl;Karl E. Havens;Hai Xu;Guangwei Zhu

  • Cyanobacterial toxins: a qualitative meta-analysis of concentrations, dosage and effects in freshwater, estuarine and marine biota

    Bastiaan Willem Ibelings;Karl E. Havens

  • Trophic position and individual feeding histories of fish from Lake Okeechobee, Florida

    Brian Fry;Patricia L Mumford;Franklin Tam;Don D Fox

  • Recovery of submerged plants from high water stress in a large subtropical lake in Florida, USA

    Karl E Havens;Bruce Sharfstein;Mark A Brady;Therese L East

  • Zooplankton grazing on bacteria and cyanobacteria in a eutrophic lake

    Kirsten A. Work;Karl E. Havens

  • Submerged aquatic vegetation correlations with depth and light attenuating materials in a shallow subtropical lake

    Karl E. Havens

Frequent Co-Authors

Alan D. Steinman
Alan D. Steinman Grand Valley State University
Hans W. Paerl
Hans W. Paerl University of North Carolina at Chapel Hill
Edward J. Phlips
Edward J. Phlips University of Florida
Erik Jeppesen
Erik Jeppesen Aarhus University
Martin T. Dokulil
Martin T. Dokulil University of Vienna
Dietmar Straile
Dietmar Straile University of Konstanz
Boqiang Qin
Boqiang Qin Chinese Academy of Sciences
Rita Adrian
Rita Adrian Freie Universität Berlin
Claire L. Schelske
Claire L. Schelske University of Florida
Gesa A. Weyhenmeyer
Gesa A. Weyhenmeyer Uppsala University

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Related Online Degrees & Career Pathways

Studying Ecology and Evolution opens diverse career doors, but many students seek extra flexibility with distance learning. While specialized online degrees in ecology are still growing, related programs expand your skills and job options. For example, pursuing online graphic design programs can help students communicate scientific concepts visually, which is critical for conservation outreach and environmental education.

Those interested in combining multiple passions can explore the most affordable online interdisciplinary studies programs. These programs allow you to blend ecology, policy, and technology, preparing you for roles in research, sustainability, and more.

Deepening your scientific background is also possible with degrees beyond the sciences. For instance, pursuing a masters in history can be valuable for those studying environmental change or conservation through a historical lens. Similarly, aspiring data managers or conservation librarians may benefit from the cheapest masters in library science.

By combining ecological knowledge with broader online degrees, you can create career pathways in research, education, communication, and management, both within and beyond traditional environmental science roles.

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