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Ecology and Evolution

D-Index
34
Citations
3683
World Ranking
7712
National Ranking
2583

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

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