Charles Halpern

Charles Halpern

Research Professor
Community ecology; Succession; Ecology of montane/subalpine meadows; Effects of forest management on plant diversity

Office: Winkenwerder 207
Phone: 206-543-2789 
Email: chalpern@uw.edu

Graduate Interest Group(s): FOREST ECOLOGY

B.S., Biological Sciences/Ecology, Cornell University, 1980
Ph.D., Botany/Plant Ecology, Oregon State University, 1987

Current Sponsored Research:
Community Forest Study
Long-term responses of vegetation to variable-retention harvests
Meadow restoration in the Oregon Cascades: Long-term responses to tree removal and fire
Recent Publications:
Celis, J., C. B. Halpern, A. F. Jones. 2017. Intraspecific trait variation and the differential decline of meadow species during conifer encroachment. Plant Ecology 218:565-578.
Urgenson, L. S., C. M. Ryan, C. B. Halpern, J. D. Bakker, R. T. Belote, J. F. Franklin, R. D. Haugo, C. R. Nelson, and A. E. M. Waltz. 2017. Visions of restoration in fire-adapted forest landscapes: lessons from the Collaborative Forest Landscape Restoration Program. Environmental Management 59(2): 338-353.
Baker, S. C, C. B. Halpern, T. J. Wardlaw, C. Kern, G. J. Edgar, R. J. Thomson, R. E. Bigley, J. F. Franklin, K. J. K. Gandhi, L. Gustafsson, S. Johnson, B. Palik, T. A. Spies, E. A. Steel, J. Weslien, and J. Strengbom. 2016. A cross-continental study of plant and beetle responses to retention of forest patches during timber harvest. Ecological Applications 26: 2493-2504 doi: 10.1002/eap.1406
Cansler, C. A., D. McKenzie, and C. B. Halpern. 2016. Area burned in alpine treeline ecotone reflects region-wide trends. International Journal of Wildland Fire 25(12): 1209-1220.
Halpern, C.B., J. A. Antos, D. McKenzie, and A. M. Olson. 2016. Past tree influence and prescribed fire mediate biotic interactions and community reassembly in a grassland-restoration experiment. Journal of Applied Ecology 53:264-273 DOI: 10.1111/1365-2664.12570
Baker, S. C., C. B. Halpern, T. J. Wardlaw, R. E. Bigley, R. L. Crawford, G. J. Edgar, S. A Evans, J. F. Franklin, G. J. Jordan, Y. Karpievitch, T. A. Spies, and R. J. Thompson. 2015. Short- and long-term benefits for forest biodiversity of retaining unlogged patches in harvested areas. Forest Ecology and Management 353:187-195.
Harmon, M. E., B. Fasth, C. B. Halpern, and J. A. Lutz. 2015. Uncertainty analysis: an evaluation metric for synthesis science. Ecosphere 6(article 63):1-12.
Halpern, C. B., J. A. Antos, and L. M. Beckman. 2014. Vegetation recovery in slash-pile scars following conifer removal in a grassland restoration experiment. Restoration Ecology 22: 731-740.
Halpern, C. B., M. Dovciak, L. S. Urgenson, and S. A. Evans. 2014. Substrates mediate responses of forest bryophytes to a gradient in overstory retention. Canadian Journal of Forest Research 44: 855-866.
Kremer, N. J., C. B. Halpern, and J. A. Antos. 2014. Conifer reinvasion of montane meadows following experimental tree removal and prescribed burning. Forest Ecology and Management 319: 128-137.
Urgenson, L. S., S. H. Reichard, and C. B. Halpern. 2014. Habitat factors and species’ traits influence riparian community recovery following removal of Bohemian knotweed (Polygonum x bohemicum). Northwest Science 88(3): 246-260.
Case, M. F., C. B. Halpern, and S. A. Levin. 2013. Contributions of gopher mound and casting disturbances to plant community structure in a Cascade Range meadow complex. Botany 91: 555-561
Halpern, C. B., and J. A. Lutz. 2013. Canopy closure exerts weak controls on understory dynamics: A 30-year study of overstory-understory interactions. Ecological Monographs 83: 221-237.
Haugo, R. D., J. D. Bakker, and C. B. Halpern. 2013. Role of biotic interactions in regulating conifer invasion of grasslands. Forest Ecology and Management 289:175-182.
Urgenson, L. S., C. B. Halpern, and P. D. Anderson. 2013. Level and pattern of overstory retention influence rates and forms of tree mortality in mature, coniferous forests of the Pacific Northwest, U.S.A. Forest Ecology and Management 308: 116-127.
Urgenson, L. S., C. B. Halpern, and P. D. Anderson. 2013. Twelve-year responses of planted and naturally regenerating conifers to variable-retention harvest in the Pacific Northwest, U.S.A.. Canadian Journal of Forest Research 43(1):46-55.
Evans, S.A., C.B. Happern, and D. McKenzie. 2012. The contributions of forest structure and substrate to bryophyte diversity and abundance in mature coniferous forests of the Pacific Northwest. Byrologist 115: 278-294.
Holloway, G. L., W. P. Smith, C. B. Halpern, R. A. Gitzen, C. C. Maguire , and S. D. West. 2012. Influence of forest structure and experimental green–tree retention on northern flying squirrels (Glaucomys sabrinus) abundance. Forest Ecology and Management 285: 187-194.
Rice, J. M., C.B. Halpern, J.A. Antos, and J.A. Jones. 2012. Spatio-temporal patterns of tree establishment are indicative of biotic interactions during early invasion of a montane meadow. Plant Ecology 213: 555-568.