World's Best Scientists 2026 revealed!
Joseph J. O'Brien

Joseph J. O'Brien

D-Index & Metrics

Ecology and Evolution

D-Index
44
Citations
6655
World Ranking
5121
National Ranking
1750

Joseph J. O'Brien 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 Joseph J. O'Brien 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: 122 publications — 34th percentile

34% of scientists in this discipline score the same or lower.

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

Joseph J. O'Brien 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 Joseph J. O'Brien 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: 44 D-Index — 41st percentile

41% of scientists in this discipline score the same or lower.

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

Overview

Joseph J. O'Brien is affiliated with the US Forest Service in the United States. Their body of work centers predominantly on environmental science, with specific focus across multiple subfields including global and planetary change, ecology, atmospheric science, nature and landscape conservation, and environmental engineering.

Their research topics cover diverse aspects of fire ecology and ecosystem dynamics. Key themes include fire effects on ecosystems, plant water relations and carbon dynamics, rangeland and wildlife management, remote sensing and LiDAR applications, fire dynamics and safety research, forest ecology and management, and ecology and vegetation dynamics studies.

Joseph J. O'Brien has contributed to several recent scientific papers, which illustrate their involvement in understanding fire behavior, plant physiology, and ecological consequences of wildfires. Recent publications include:

  • Prescribed fire science: the case for a refined research agenda (2020), published in Fire Ecology
  • Tree crown injury from wildland fires: causes, measurement and ecological and physiological consequences (2021), published in New Phytologist
  • Vegetation's influence on fire behavior goes beyond just being fuel (2022), published in Fire Ecology
  • Coupling terrestrial laser scanning with 3D fuel biomass sampling for advancing wildland fuels characterization (2020), published in Forest Ecology and Management
  • Integrating plant physiology into simulation of fire behavior and effects (2023), published in New Phytologist

Frequent co-authors collaborating with Joseph J. O'Brien include:

  • E. Louise Loudermilk
  • J. Kevin Hiers
  • Scott Collis
  • Maxwell Grover
  • Matthew Tuftedal

Their work appears regularly in a variety of scientific venues. Notable journals and publication platforms include:

  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
  • Fire Ecology
  • ACS ES&T Air
  • Forest Ecology and Management
  • Bulletin of the American Meteorological Society

Best Publications

  • Evaluation of digital and film hemispherical photography and spherical densiometry for measuring forest light environments.

    Sylvia R Englund;Joseph J O'Brien;David B Clark

  • Silviculture that sustains: the nexus between silviculture, frequent prescribed fire, and conservation of biodiversity in longleaf pine forests of the southeastern United States

    R J Mitchell;J K Hiers;J J O'Brien;S B Jack

  • Imputation of individual longleaf pine (Pinus palustris Mill.) tree attributes from field and LiDAR data

    Carlos A. Silva;Andrew T. Hudak;Lee A. Vierling;E. Louise Loudermilk

  • Whole tree xylem sap flow responses to multiple environmental variables in a wet tropical forest

    J. J. O'brien;S. F. Oberbauer;S. F. Oberbauer;D. B. Clark

  • Future climate and fire interactions in the southeastern region of the United States

    Robert J. Mitchell;Yongqiang Liu;Joseph J. O’Brien;Katherine J. Elliott

  • Spatial and temporal variation in soil CO2 efflux in an old-growth neotropical rain forest, La Selva, Costa Rica

    Luitgard Schwendenmann;Edzo Veldkamp;Tania Brenes;Joseph J. O''Brien

  • Prescribed fire science: the case for a refined research agenda

    J. Kevin Hiers;Joseph J. O’Brien;J. Morgan Varner;Bret W. Butler

  • Sea‐Level Rise and the Reduction in Pine Forests in the Florida Keys

    Michael S. Ross;Joseph J. O'Brien;Leonel da Silveira Lobo Sternberg

  • FOREST FLOOR DEPTH MEDIATES UNDERSTORY VIGOR IN XERIC PINUS PALUSTRIS ECOSYSTEMS

    J. Kevin Hiers;Joseph J. O'Brien;Rodney E. Will;Robert J. Mitchell

  • Ecological Forestry in the Southeast: Understanding the Ecology of Fuels

    R.J. Mitchell;J.K. Hiers;J. O’Brien;G. Starr

  • The wildland fuel cell concept: an approach to characterize fine-scale variation in fuels and fire in frequently burned longleaf pine forests

    J. Kevin Hiers;Joseph J. O’Brien;R. J. Mitchell;John M. Grego

  • Ground-based LIDAR: a novel approach to quantify fine-scale fuelbed characteristics

    E.L. Loudermilk;J.K. Hiers;J.J. O’Brien;R.J. Mitchell

  • Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests

    Fabien H. Wagner;Bruno Hérault;Damien Bonal;Clément Stahl;Clément Stahl

  • Post-fire tree stress and growth following smoldering duff fires

    J. Morgan Varner;Francis E. Putz;Joseph J. O’Brien;J. Kevin Hiers

  • Disturbance and the rising tide: the challenge of biodiversity management on low-island ecosystems

    Michael S Ross;Joseph J O'Brien;R Glenn Ford;Keqi Zhang

  • Ecological site classification of Florida keys terrestrial habitats

    Michael S. Ross;Joseph J. O'Brien;Laura J. Flynn

  • Have changing forests conditions contributed to pollinator decline in the southeastern United States

    James L. Hanula;Scott Horn;Joseph J. O’Brien

  • QUIC-fire: A fast-running simulation tool for prescribed fire planning

    Rodman Linn;Scott L. Goodrick;Sara Brambilla;Michael J. Brown

  • Calibration of a Frequency Domain Reflectometry Sensor for Humid Tropical Soils of Volcanic Origin

    Edzo Veldkamp;Joseph J. O'Brien

  • Acute Physiological Stress and Mortality Following Fire in a Long-Unburned Longleaf Pine Ecosystem

    Joseph J. O’Brien;J. Kevin Hiers;R. J. Mitchell;J. Morgan Varner

  • High-resolution infrared thermography for capturing wildland fire behaviour: RxCADRE 2012

    Joseph J. O’Brien;E. Louise Loudermilk;Benjamin Hornsby;Andrew T. Hudak

Frequent Co-Authors

J. Kevin Hiers
J. Kevin Hiers Texas A&M University
Andrew T. Hudak
Andrew T. Hudak US Forest Service
Steven F. Oberbauer
Steven F. Oberbauer Florida International University
Mac A. Callaham
Mac A. Callaham US Forest Service
J. Morgan Varner
J. Morgan Varner US Forest Service
Michael S. Ross
Michael S. Ross Florida International University
Robert J. Mitchell
Robert J. Mitchell La Trobe University
Gregory Starr
Gregory Starr University of Alabama
Lee A. Dyer
Lee A. Dyer University of Nevada Reno
Roger D. Ottmar
Roger D. Ottmar US Forest Service

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