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Robert M. Hubbard

Robert M. Hubbard

US Forest Service
United States

D-Index & Metrics

Ecology and Evolution

D-Index
31
Citations
5977
World Ranking
8182
National Ranking
2712

Robert M. Hubbard 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 Robert M. Hubbard 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: 63 publications — 2nd percentile

2% of scientists in this discipline score the same or lower.

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

Robert M. Hubbard 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 Robert M. Hubbard 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: 31 D-Index — 3rd percentile

3% of scientists in this discipline score the same or lower.

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

Overview

Robert M. Hubbard is affiliated with the US Forest Service in the United States. Their research primarily focuses on environmental science, with a significant emphasis on global and planetary change, nature and landscape conservation, ecology, atmospheric science, and insect science.

The main topics addressed in Hubbard's work include plant water relations and carbon dynamics, forest ecology and management, fire effects on ecosystems, tree-ring climate responses, forest ecology and biodiversity studies, environmental and biological studies, and forest insect ecology and management.

Hubbard has contributed to various publications, with frequent appearances in the following venues:

  • Forest Ecology and Management
  • Forests
  • Zenodo (CERN European Organization for Nuclear Research)
  • Ecosphere
  • Journal of Forestry Research

Recent papers authored or co-authored by Robert M. Hubbard include:

  • "Influence of stand density on growth and water use efficiency in Eucalyptus clones" (2020, Forest Ecology and Management)
  • "Contrasting water use of two Eucalyptus clones across a precipitation and temperature gradient in Brazil" (2020, Forest Ecology and Management)
  • "Climate and genotype influences on carbon fluxes and partitioning in Eucalyptus plantations" (2020, Forest Ecology and Management)
  • "Stocking effects on seasonal tree transpiration and ecosystem water balance in a fast-growing Eucalyptus plantation in Brazil" (2020, Forest Ecology and Management)
  • "Quantifying turgor loss point and leaf water potential across contrasting Eucalyptus clones and sites within the TECHS research platform" (2020, Forest Ecology and Management)

Frequent co-authors in Hubbard's research include:

  • Matthew D. Petrie
  • John B. Bradford
  • Gabriela Gonçalves Moreira
  • Otávio Camargo Campoe
  • Rodrigo Hakamada

Best Publications

  • Stomatal conductance and photosynthesis vary linearly with plant hydraulic conductance in ponderosa pine

    Robert M. Hubbard;M. G. Ryan;V. Stiller;J. S. Sperry

  • Foliage, fine-root, woody-tissue and stand respiration in Pinus radiata in relation to nitrogen status.

    Michael G. Ryan;Robert M. Hubbard;Silvia Pongracic;R. J. Raison

  • Evidence that hydraulic conductance limits photosynthesis in old Pinus ponderosa trees.

    Robert M. Hubbard;Barbara J. Bond;Michael G. Ryan

  • The relationship between tree height and leaf area: sapwood area ratio.

    N. Mcdowell;H. Barnard;B. J. Bond;T. Hinckley

  • Woody tissue maintenance respiration of four conifers in contrasting climates.

    Michael G. Ryan;Stith T. Gower;Robert M. Hubbard;Richard H. Waring

  • A comparison of sap flux-based evapotranspiration estimates with catchment-scale water balance

    Chelcy R. Ford;Robert M. Hubbard;Brian D. Kloeppel;James M. Vose

  • Transpiration and whole-tree conductance in ponderosa pine trees of different heights

    Michael G. Ryan;Barbara J. Bond;Beverly E. Law;Robert M. Hubbard

  • Tree species and soil textural controls on carbon and nitrogen mineralization rates

    Christian P. Giardina;Michael G. Ryan;Robert M. Hubbard;Robert M. Hubbard;Dan Binkley

  • Dark respiration of pines

    Michael G. Ryan;Sune Linder;James M. Vose;Robert M. Hubbard

  • Tree regeneration and future stand development after bark beetle infestation and harvesting in Colorado lodgepole pine stands

    Byron J. Collins;Charles C. Rhoades;Robert M. Hubbard;Michael A. Battaglia

  • Quantifying structural and physiological controls on variation in canopy transpiration among planted pine and hardwood species in the southern Appalachians

    Chelcy R. Ford;Robert M. Hubbard;James M. Vose

  • Relationships between moisture, chemistry, and ignition of Pinus contorta needles during the early stages of mountain pine beetle attack

    W. Matt Jolly;Russell A. Parsons;Ann M. Hadlow;Greg M. Cohn

  • Effects of irrigation on water use and water use efficiency in two fast growing Eucalyptus plantations

    Robert M. Hubbard;Jose Stape;Michael G. Ryan;Michael G. Ryan;Auro C. Almeida

  • Woody-tissue respiration for Simarouba amara and Minquartia guianensis, two tropical wet forest trees with different growth habits.

    Michael G. Ryan;Robert M. Hubbard;Deborah A. Clark;Robert L. Sanford

  • Changes in transpiration and foliage growth in lodgepole pine trees following mountain pine beetle attack and mechanical girdling

    Robert M. Hubbard;Charles C. Rhoades;Kelly Elder;Jose Negron

  • A review of precipitation and temperature control on seedling emergence and establishment for ponderosa and lodgepole pine forest regeneration

    Matthew Petrie;Matthew Petrie;A.M. Wildeman;John B. Bradford;R.M. Hubbard

  • Seasonal patterns in soil surface CO2 flux under snow cover in 50 and 300 year old subalpine forests

    Robert M. Hubbard;Michael G. Ryan;Michael G. Ryan;Kelly Elder;Kelly Elder;Charles C. Rhoades

  • Climate change may restrict dryland forest regeneration in the 21st century.

    M.D. Petrie;M.D. Petrie;John B. Bradford;R.M. Hubbard;W.K. Lauenroth

  • The effect of fertilization on sap flux and canopy conductance in a Eucalyptus saligna experimental forest

    Robert M. Hubbard;Michael G. Ryan;Michael G. Ryan;Christian P. Giardina;Christian P. Giardina;Holly Barnard

  • The Effects of Bark Beetle Outbreaks on Forest Development, Fuel Loads and Potential Fire Behavior in Salvage Logged and Untreated Lodgepole Pine Forests

    B. J. Collins;C. C. Rhoades;M. A. Battaglia;R. M. Hubbard

  • Effects of irrigation on water use and water use efficiency in two fast growing

    Robert M. Hubbard;Jose Stape;Michael G. Ryan;Auro C. Almeida

Frequent Co-Authors

Michael G. Ryan
Michael G. Ryan Colorado State University
Charles C. Rhoades
Charles C. Rhoades US Forest Service
Kelly Elder
Kelly Elder US Forest Service
José Luiz Stape
José Luiz Stape North Carolina State University
Michael Battaglia
Michael Battaglia Agriculture and Food
James M. Vose
James M. Vose North Carolina State University
Barbara J. Bond
Barbara J. Bond Oregon State University
Dan Binkley
Dan Binkley Colorado State University
Christian P. Giardina
Christian P. Giardina US Forest Service
John B. Bradford
John B. Bradford United States Geological Survey

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Related Online Degrees & Career Pathways

If you are interested in Ecology and Evolution, there are several related online degrees and career pathways to consider. Many professionals explore fields such as environmental policy, mental health, social work, or psychology, which can help build a versatile skill set and expand career options.

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Those interested in direct support roles can pursue an online masters in mental health counseling, opening doors to counseling careers. Exploring these online pathways can help you align your academic interests in Ecology and Evolution with diverse, meaningful career opportunities.

Best Scientists Citing Robert M. Hubbard

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Timothy J. Brodribb

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