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Christian A. Hagen

D-Index & Metrics

Ecology and Evolution

D-Index
34
Citations
3683
World Ranking
7708
National Ranking
2584

Christian A. Hagen 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 Christian A. Hagen 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: 109 publications — 25th percentile

25% of scientists in this discipline score the same or lower.

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

Christian A. Hagen 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 Christian A. Hagen 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: 34 D-Index — 11th percentile

11% of scientists in this discipline score the same or lower.

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

Overview

Christian A. Hagen is affiliated with Oregon State University in the United States. Their work primarily focuses on Environmental Science with a significant emphasis on Ecology, covering a range of related subfields such as Global and Planetary Change, Nature and Landscape Conservation, Environmental Chemistry, and Ecological Modeling.

The researcher's scholarly contributions span various aspects of wildlife and ecosystem dynamics. Their topics of study include:

  • Rangeland and Wildlife Management
  • Fire effects on ecosystems
  • Wildlife Ecology and Conservation
  • Ecology and Vegetation Dynamics Studies
  • Turfgrass Adaptation and Management
  • Species Distribution and Climate Change
  • Animal Ecology and Behavior Studies

Christian A. Hagen has published in several frequent venues, illustrating an active presence in ecological research communities. These include:

  • Journal of Wildlife Management
  • Ecology and Evolution
  • Global Ecology and Conservation
  • Conservation Biology
  • Ecosphere

Key recent papers authored by or involving Christian A. Hagen are as follows:

  • "Testing a global standard for quantifying species recovery and assessing conservation impact" (2021), Conservation Biology
  • "Reversing tree expansion in sagebrush steppe yields population-level benefit for imperiled grouse" (2021), Ecosphere
  • "Are Sage-Grouse Fine-Scale Specialists or Shrub-Steppe Generalists?" (2020), Journal of Wildlife Management
  • "Reversing Tree Encroachment Increases Usable Space for Sage-Grouse during the Breeding Season" (2021), Wildlife Society Bulletin
  • "Acute and lagged fitness consequences for a sagebrush obligate in a post mega-wildfire landscape" (2021), Ecology and Evolution

The scientist collaborates frequently with several peers in their field. Frequent coauthors include:

  • David A. Haukos
  • David E. Naugle
  • Christopher R. Anthony
  • Katie M. Dugger
  • David C. Pavlacky

Best Publications

  • Saving sage-grouse from the trees: A proactive solution to reducing a key threat to a candidate species

    Sharon Baruch-Mordo;Jeffrey S. Evans;Jeffrey S. Evans;John P. Severson;David E. Naugle;David E. Naugle

  • A Meta-analysis of Greater Sage-grouse Centrocercus urophasianus Nesting and Brood-rearing Habitats

    Christian A. Hagen;John W. Connelly;Michael A. Schroeder

  • LOCATION AND SUCCESS OF LESSER PRAIRIE-CHICKEN NESTS IN RELATION TO VEGETATION AND HUMAN DISTURBANCE

    James C. Pitman;Christian A. Hagen;Robert J. Robel;Thomas M. Loughin

  • Wildfire, climate, and invasive grass interactions negatively impact an indicator species by reshaping sagebrush ecosystems

    Peter S. Coates;Mark A. Ricca;Brian G. Prochazka;Matthew L. Brooks

  • Guidelines for managing lesser prairie-chicken populations and their habitats

    Christian A. Hagen;Brent E. Jamison;Kenneth M. Giesen;Terry Z. Riley

  • Characteristics and Dynamics of Greater Sage-Grouse Populations

    John W. Connelly;Christian A. Hagen;Michael A. Schroeder

  • Testing a global standard for quantifying species recovery and assessing conservation impact

    Molly K. Grace;Molly K. Grace;H. Resit Akçakaya;H. Resit Akçakaya;Elizabeth L. Bennett;Thomas M. Brooks;Thomas M. Brooks

  • Age-Specific Survival and Probable Causes of Mortality in Female Lesser Prairie-Chickens

    Christian A. Hagen;James C. Pitman;Brett K. Sandercock;Robert J. Robel

  • Public lands and private waters: scarce mesic resources structure land tenure and sage‐grouse distributions

    J. P. Donnelly;D. E. Naugle;C. A. Hagen;J. D. Maestas

  • Spatial Variation in Lesser Prairie-Chicken Demography: A Sensitivity Analysis of Population Dynamics and Management Alternatives

    Christian A. Hagen;Brett K. Sandercock;James C. Pitman;Robert J. Robel

  • Range-wide population size of the lesser prairie-chicken: 2012 and 2013

    Lyman McDonald;Grant Beauprez;Grant Gardner;Jim Griswold

  • Lesser prairie-chicken brood habitat in sand sagebrush: invertebrate biomass and vegetation

    Christian A. Hagen;G. Curran Salter;James C. Pitman;Robert J. Robel

  • NESTING ECOLOGY OF LESSER PRAIRIE-CHICKENS IN SAND SAGEBRUSH PRAIRIE OF SOUTHWESTERN KANSAS

    James C. Pitman;Christian A. Hagen;Brent E. Jamison;Robert J. Robel

  • Lesser Prairie-Chicken Avoidance of Trees in a Grassland Landscape☆

    Joseph M. Lautenbach;Reid T. Plumb;Samantha G. Robinson;Christian A. Hagen

  • Lesser Prairie-Chicken (Tympanuchus pallidicinctus)

    Kenneth M. Giesen;A. Poole;F. Gill

  • Age-specific variation in apparent survival rates of male lesser-prairie-chickens

    Christian A. Hagen;James C. Pitman;Brett K. Sandercock;Robert J. Robel

  • Mapping Tree Canopy Cover in Support of Proactive Prairie Grouse Conservation in Western North America

    Michael J. Falkowski;Jeffrey S. Evans;Jeffrey S. Evans;David E. Naugle;Christian A. Hagen

  • Factors affecting female space use in ten populations of prairie chickens

    Virginia L. Winder;Kaylan M. Carrlson;Andrew J. Gregory;Christian A. Hagen

  • Short-Term Response of Sage-Grouse Nesting to Conifer Removal in the Northern Great Basin

    John P. Severson;Christian A. Hagen;Jeremy D. Maestas;David E. Naugle

  • Special Issue: Targeted Woodland Removal to Recover at-Risk Grouse and Their Sagebrush-Steppe and Prairie Ecosystems

    Richard F. Miller;David E. Naugle;Jeremy D. Maestas;Christian A. Hagen

  • Conservation of greater sage-grouse- a synthesis of current trends and future management

    John W. Connelly;Steven T. Knick;Clait E. Braun;William L. Baker

Frequent Co-Authors

David A. Haukos
David A. Haukos Kansas State University
David E. Naugle
David E. Naugle University of Montana
Brett K. Sandercock
Brett K. Sandercock Kansas State University
Kerry P. Reese
Kerry P. Reese University of Idaho
Michael J. Falkowski
Michael J. Falkowski Colorado State University
Jeffrey S. Evans
Jeffrey S. Evans The Nature Conservancy
Brady W. Allred
Brady W. Allred University of Montana
Edward O. Garton
Edward O. Garton University of Idaho
David A. Keith
David A. Keith University of New South Wales
John R. Skalski
John R. Skalski University of Washington

External Links

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Another pathway to consider is an online interdisciplinary studies degree career outcomes, which allow students to blend ecology, policy, education, and more for broader career opportunities. Online options can make it easier to balance education with work or research.

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Best Scientists Citing Christian A. Hagen

David E. Naugle

David E. Naugle

University of Montana

Publications: 38

Jeffrey L. Beck

Jeffrey L. Beck

University of Wyoming

Publications: 30

Cameron L. Aldridge

Cameron L. Aldridge

Colorado State University

Publications: 30

Samuel D. Fuhlendorf

Samuel D. Fuhlendorf

Oklahoma State University

Publications: 21

Brett K. Sandercock

Brett K. Sandercock

Kansas State University

Publications: 18

David A. Haukos

David A. Haukos

Kansas State University

Publications: 15

Kirk W. Davies

Kirk W. Davies

United States Department of Agriculture

Publications: 15

Brady W. Allred

Brady W. Allred

University of Montana

Publications: 15

James S. Sedinger

James S. Sedinger

University of Nevada Reno

Publications: 15

Ronald J. Kendall

Ronald J. Kendall

Texas Tech University

Publications: 14

Chad S. Boyd

Chad S. Boyd

Oregon State University

Publications: 11

Joshua J. Millspaugh

Joshua J. Millspaugh

University of Montana

Publications: 11

Jeanne C. Chambers

Jeanne C. Chambers

US Forest Service

Publications: 11

David S. Pilliod

David S. Pilliod

United States Geological Survey

Publications: 10

Jeffrey S. Evans

Jeffrey S. Evans

The Nature Conservancy

Publications: 8

Michael A. Patten

Michael A. Patten

Nord University

Publications: 8

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