publications |
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| Halpern, C. B., J. Halaj, S. A. Evans, and M. Dovciak. In press. Level and pattern of overstory retention interact to shape long-term responses of understories to timber harvest. Ecological Applications. (pdf) | ||
| Evans, S. A., C. B. Halpern, and D. McKenzie. In press. The contributions of forest structure and substrate to bryophyte diversity and abundance in mature coniferous forests of the Pacific Northwest. The Bryologist. | ||
| Urgenson. L. S., S. H. Reichard, and C. B. Halpern. In press. Multiple competitive mechanisms underlie the effects of a strong invader on early- to late-seral tree seedlings. Journal of Ecology. | ||
| Halpern, C. B., R. D. Haugo, J. A. Antos, S. S. Kaas, and A. L. Kilanowski. 2012. Grassland restoration with and without fire: evidence from a tree-removal experiment. Ecological Applications 22:425-441 (pdf) (Appendices) | ||
| 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. (Abstract) | ||
| Bustamante-Sánchez, M. A., J. J. Armesto, and C. B. Halpern. 2011. Biotic and abiotic controls on tree colonization in three early successional communities of Chiloé Island, Chile. Journal of Ecology 99:288-299. (Abstract) | ||
| Haugo, R. D., C. B. Halpern, and J. D. Bakker. 2011. Landscape context and tree influences shape the long-term dynamics of forest-meadow ecotones in complex mountain ecosystems. Ecosphere 2(8):art91.(pdf) | ||
| Dovciak, M., and C. B. Halpern. 2010. Diversity-stability relationships in forest herb populations during four decades of community assembly. Ecology Letters 13:1300-1309. (Abstract) | ||
| Halpern, C. B., J. A. Antos, J. M. Rice, R. D. Haugo, and N. L. Lang. 2010. Tree invasion of a montane meadow complex: temporal trends, spatial patterns, and biotic interactions. Journal of Vegetation Science 21:717-732. (Abstract) | ||
| Haugo, R. D., and C. B. Halpern. 2010. Tree age and tree species shape positive and negative interactions in a montane meadow. Botany 88:488-499. (Abstract) | ||
| Jones, C. C., S. A. Acker, and C. B. Halpern. 2010. Combining local- and large-scale models to predict the distributions of invasive plant species. Ecological Applications 20:311-326. (pdf) | ||
| Webster, K. A., and C. B. Halpern. 2010. Positive long-term responses of vegetation to reintroduction and repeated use of fire in mixed-conifer forests of the Sierra Nevada. Ecosphere 1(5):art9. (pdf) | ||
Sprugel, D. G., K. G. Rascher, R. Gersonde, M. Dovciak, J. A. Lutz, and C. B. Halpern. 2009. Spatially explicit modeling of overstory manipulations in young forests: Effects on stand structure and light. Ecological Modelling 220:3565-3575. (Abstract) |
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| Aubry, K. B., C. B. Halpern, and C. E. Peterson. 2009. Variable-retention harvests in the Pacific Northwest: a review of short-term findings from the DEMO study. Forest Ecology and Management 258:398-408. (Abstract) | ||
| Compagnoni, A., and C. B. Halpern. 2009. Properties of native plant communities do not determine exotic success during early forest succession. Ecography 32:449-458. (Abstract) | ||
| Halaj, J., C. B. Halpern, and H. Yi. 2009. Effects of green-tree retention on abundance and guild composition ofcorticolous arthropods. Forest Ecology and Management 258:850-859. (Abstract) | ||
| Harrod, R. J., and C. B. Halpern. 2009. Effects of experimental burning on individual performance and population structure of two rare plants of northcentral Washington. Restoration Ecology 17:215-225. (Abstract) | ||
| Urgenson, L., S. Reichard, and C. Halpern. 2009. Community and ecosystem consequences of giant knotweed (Polygonum sachalinense) invasion into riparian forests of western Washington, USA. Biological Conservation 142:1536-1541. (Abstract) | ||
| Halaj, J., C. B. Halpern, and H. Yi. 2008. Responses of litter-dwelling spiders and carabid beetles to varying levels and patterns of green-tree retention. Forest Ecology and Management 255:887-900.(Abstract) | ||
| Jones, C. C., C. B. Halpern, and J. Niederer. 2008. Plant succession on gopher mounds in western Cascade meadows: consequences for species diversity and heterogeneity. American Midland Naturalist 159:275-286. (Abstract) | ||
| Nelson, C. R., C. B. Halpern,
and J. K. Agee. 2008. Thinning and burning result in limited
invasion of nonnative plants but neutral effects on natives. Ecological Applications 18:762-770. (pdf) |
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| Six, L. J., and C. B. Halpern. 2008. Substrate effects on distribution, biomass allocation and morphology of forest understory plants. Botany 86:1133-1142. (Abstract) | ||
| Gitzen, R. A., S. D. West, C. C. Maguire, T. Manning, and C. B. Halpern. 2007. Response of small mammals to varying amounts and patterns of green-tree retention. Forest Ecology and Management 251:142-155.(Abstract) | ||
| Haugo, R. D., and C. B. Halpern. 2007. Vegetation responses to conifer encroachment in a dry, montane meadow: a chronosequence approach. Canadian Journal of Botany 85:285-298. (pdf) | ||
| Heithecker, T. D., and C. B. Halpern. 2007. Edge-related gradients in microclimate in forest aggregates following structural retention harvests in western Washington. Forest Ecology and Management 248:163-173. (Abstract) | ||
| Lang, N. L., and C. B. Halpern. 2007. The soil seed bank of a montane meadow: consequences of conifer encroachment and implications for restoration. Canadian Journal of Botany 85:557-569. (pdf) | ||
| Maguire, D. A., C. B. Halpern, and D. L. Phillips. 2007. Changes in forest structure following variable-retention harvests: target and non-target effects. Forest Ecology and Management 242:708-726.(Abstract) | ||
| Nelson, C. R., C. B. Halpern, and J. A. Antos. 2007. Variation in responses of late-seral herbs to disturbance and environmental stress. Ecology 88:2880-2890. (pdf) | ||
Dovciak, M., C. B. Halpern, J. F. Saracco, S. A. Evans, and D. A. Liguori. 2006. Persistence of ground-layer bryophytes in a structural-retention experiment: initial effects of level and pattern of retention. Canadian Journal of Forest Research 36:3039-3052. (pdf) |
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| Heithecker,
T. D., and C. B. Halpern. 2006. Variation in microclimate associated with
dispersed-retention harvests in coniferous forests of western Washington. Forest Ecology and Management 226:60-71. (pdf) |
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| Lutz, J.
A., and C. B. Halpern. 2006. Tree mortality during early forest development:
a long-term study of rates, causes, |
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| Maguire,
D. A., D. B. Mainwaring, and C. B. Halpern. 2006. Stand dynamics after
variable-retention harvesting in mature Douglas-fir forests of western North America. Allgemeine Forst und Jagdzeitung 177:120-131. (pdf) |
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| Halpern, C. B., D. McKenzie, S. A. Evans, and D. A. Maguire. 2005. Initial responses of forest understories to varying levels and patterns of green-tree retention. Ecological Applications 15:175-195. (pdf) | ||
| Harrod,
R. J., and C. B. Halpern. 2005. Effects of experimental shading and removal
of competitors on vegetative and reproductive
performance of Trifolium thompsonii Morton, a rare endemic herb
of eastern Washington. Natural Areas Journal
25:156-164. |
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| Harrod, R. J., and C. B. Halpern. 2005. The seed ecology of Iliamna longisepala (Torr.) Wiggins, an east Cascade endemic. Natural Areas Journal 25:246-256. | ||
| Nelson, C. R., and C. B. Halpern. 2005. Edge-related responses of understory species to aggregated retention harvest in the Pacific Northwest. Ecological Applications 15:196-209. (pdf) | ||
| Nelson, C. R., and C. B. Halpern. 2005. Short-term effects of timber harvest and forest edges on ground-layer mosses and liverworts. Canadian Journal of Botany 83:610-620. (pdf) | ||
| Aubry, K.B., C.B. Halpern, and D.A. Maguire. 2004. Ecological effects of variable-retention harvests in the northwestern United States: the DEMO study. Forest Snow and Landscape Research 78:119-134. (pdf) | ||
| Antos, J. A., C. B. Halpern,
R. E. Miller, K. Cromack, Jr., and M. G. Halaj. 2003. Temporal and spatial
changes in soil carbon and nitrogent after clearcutting and burning of an old-growth Douglas-fir forest. USDA Forest Service Research Paper PNW-RP-552. (pdf) |
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| Moore, J. R., D. A. Maguire, D. L. Phillips, and C. B. Halpern. 2002. Effects of varying levels and patterns of green-tree retention on amount of harvesting damage. Western Journal of Applied Forestry 17:202–206. (Abstract) | ||
| Acker, S. A., C. B. Halpern, M. E. Harmon, and C. T. Dyrness. 2002. Trends in bole biomass accumulation, net primary production, and tree mortality in Pseudotsuga menziesii forests of contrasting age. Tree Physiology 22:213-217. (Abstract) | ||
| Halpern, C.B., and D. McKenzie. 2001. Disturbance and post-harvest ground conditions in a structural retention experiment. Forest Ecology and Management 154:215-225. (Abstract) | ||
| Lezberg, A. L., C. B. Halpern, and J. A. Antos. 2001. Clonal development of Maianthemum dilatatum in forests of differing age and structure. Canadian Journal of Botany 79:1028-1038. (pdf) | ||
| Thomas, S. C., D. A. Liguori, and C. B. Halpern. 2001. Corticolous bryophytes in managed Douglas-fir forests: habitat differentiation and responses to thinning and fertilization. Canadian Journal of Botany 79:886-896. (pdf) | ||
| Beach, E. W., and C. B. Halpern. 2001. Controls on conifer regeneration in managed riparian forests: effects of seed source, substrate, and vegetation. Canadian Journal of Forest Research 31:471-482. (pdf) | ||
McKenzie,
D., C. B. Halpern, and C. R. Nelson. 2000. Overstory influences on herb
and shrub communities in mature forests of western
Washington, USA. Canadian Journal of Forest Research 30:1655-1666. (pdf)
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| Aubry, K. B., M. P. Amaranthus, C. B. Halpern, J. D. White, B. L. Woodard, C. E. Peterson, C. A. Lagoudakis, and A. J. Horton. 1999. Experimental design of the DEMO project: A study of varying levels and patterns of green-tree retention in harvest units in Oregon and Washington. Northwest Science 73 (Special Issue):12-26. (pdf) | ||
| Franklin, J. F., and C. B. Halpern. 1999. Pacific Northwest Forests. Pages 123-159 in M. G. Barbour and W. D. Billings (editors). North American Terrestrial Vegetation (second edition). Cambridge University Press, New York. | ||
| Halpern, C. B., and M. G. Raphael, editors. 1999. Special issue on retention harvests in Northwestern forest ecosystems: The Demonstration of Ecosystem Management Options (DEMO) Study. Northwest Science 73 (Special Issue):1-2. | ||
| Halpern, C. B., S. A. Evans, C. R. Nelson, D. McKenzie, D. A. Liguori, D. E. Hibbs, and M. G. Halaj. 1999. Response of forest vegetation to varying levels and patterns of green-tree retention: An overview of a long-term experiment. Northwest Science 73 (Special Issue):27-44. (pdf) | ||
| Halpern, C. B., S. A. Evans, and S. Nielson. 1999. Soil seed banks in young, closed-canopy forests of the Olympic Peninsula, Washington: Potential contributions to understory reinitiation. Canadian Journal of Botany 77:922-935. (pdf) | ||
| Lezberg, A. L., J. A. Antos, and C. B. Halpern. 1999. Below-ground traits of herbaceous species in young, coniferous forests of the Olympic Peninsula, Washington. Canadian Journal of Botany 77: 936-943. (pdf) | ||
| McKenzie, D., and C. B. Halpern. 1999. Modeling the distributions of shrub species in Pacific Northwest forests. Forest Ecology and Management 114:293-307.(Abstract) | ||
| Thomas, S. C., C. B. Halpern, D. A. Falk, D. A. Liguori, and K. A. Austin. 1999. Plant diversity in managed forests: understory responses to thinning and fertilization. Ecological Applications 9:864-879. (pdf) | ||
| Miller, E. A., and C. B. Halpern. 1998. Effects of environment and grazing disturbance on tree establishment in meadows of the western Cascade Range, Oregon, USA. Journal of Vegetation Science 9:265-282.(pdf) | ||
| Antos, J. A., and C. B. Halpern. 1997. Root system differences among species: implications for early successional changes in forests of western Oregon. American Midland Naturalist 138:97-108. | ||
| Halpern, C. B., J. A. Antos, M. A. Geyer, and A. M. Olson. 1997. Species replacement during early secondary succession: the abrupt decline of winter annual. Ecology 78:621-631. (pdf) | ||
| Halpern, C. B., E. A. Miller, and M. A. Geyer. 1996. Equations for predicting above-ground biomass of plant species in early successional forests of the western Cascade Range, Oregon. Northwest Science 70:306-320. (pdf) | ||
| Halpern, C. B., and T. A. Spies. 1995. Plant species diversity in natural and managed forests of the Pacific Northwest. Ecological Applications 5:913-934. (pdf) | ||
| Busing, R. T., C. B. Halpern, and T. A. Spies. 1995. Ecology of Pacific yew (Taxus brevifolia) in western Oregon and Washington. Conservation Biology 9:1199-1207. (Abstract) | ||
| Urban, D. L., M. E. Harmon, and C. B. Halpern. 1993. Potential response of Pacific Northwestern forests to climatic change, effects of stand age and initial composition. Climatic Change 23: 247-266. | ||
| Halpern, C. B., J. A. Antos, K. Cromack, Jr., and A. M. Olson. 1992. Species' interactions and plant diversity during secondary succession. The Northwest Environmental Journal 8:203-205. | ||
| Halpern, C. B., J. F. Franklin, and A. McKee. 1992. Changes in plant species diversity after harvest of Douglas-fir forests. The Northwest Environmental Journal 8:205-207. | ||
| Taylor, A. H., and C. B. Halpern. 1991. The structure and dynamics of red fir (Abies magnifica) forests, southern Cascade Range, USA. Journal of Vegetation Science 2:189-200. (Abstract) | ||
| Halpern, C. B., and J. F. Franklin. 1990. Physiognomic development of Pseudotsuga forests in relation to initial structure and disturbance intensity. Journal of Vegetation Science 1:475-482. (Abstract) | ||
| Halpern, C. B., P. M. Frenzen, J. E. Means, and J. F. Franklin. 1990. Plant succession in areas of scorched and blown- down forest after the 1980 eruption of Mount St. Helens, Washington. Journal of Vegetation Science 1:181-194. (Abstract) | ||
| Halpern, C. B. 1989. Early successional patterns of forest species: interactions of life history traits and disturbance. Ecology 70:704-720. (pdf) | ||
| Halpern, C. B. 1988. Early successional pathways and the resistance and resilience of forest communities. Ecology 69:1703- 1715. (pdf) | ||
| Halpern, C. B. 1986. Montane meadow plant associations of Sequoia National Park, California. Madroño 33:1-23. | ||
| Halpern, C. B.,
B. G. Smith, and J. F. Franklin. 1984. Composition, structure, and distribution
of the ecosystems of the Three Sisters Biosphere Reserve/Wilderness Area. A Final Report to the United States Department of Agriculture. (pdf) |
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| Halpern, C. B., and M. E. Harmon. 1983. Early plant succession on the Muddy River Mudflow, Mount St. Helens, Washington. American Midland Naturalist 110:97-106. | ||