Bryan Endress
Assistant Professor
Eastern Oregon University
Department of Animal and Rangeland Sciences
Eastern Oregon Agriculture and Natural Resource Program
205 Badgley Hall One University Blvd.
La Grande, OR 97850
United States


My research seeks to identify and understand factors influencing vegetation structure, composition and dynamics and how this information can inform natural resource management.  Currently, my research focus on a range of issues including invasive plant science and management, ecological restoration, vegetation responses to management actions and alterations in disturbance regimes, and plant-animal interactions. I currently have an active research program in the interior Pacific Northwest centered on:

  1. Ecology and management of forest rangelands
  2. Perennial bunchgrass ecology, management and restoration
  3. Invasive species ecology and management

Other research interests include the ecology and management of economically and culturally important plant species, community-based resource management, and international natural resource management.


Ph.D. Botany, Miami University, 2002
M.S. Forestry, University of Illinois at Urbana-Champaign, 1997
B.A. Biology, Luther College, 1995


Publications (peer reviewed)

  1. Pekin, B.K., B.A. Endress, M.J. Wisdom, B.J. Naylor, and C.G. Parks. In review.  Forest understory responses to ungulate herbivory following stand thinning and fire.  Journal of Applied Vegetation Science.
  2. McCullough, S.A. J.P. Montange, B.A. Endress, C. Rochester, R.N. Fisher and D.H. Deutschman.  In review.  Monitoring consumer species abundance across a disturbance gradient in vegetation structure. Southwestern Naturalist.
  3. Andersen, K.M. B.K. Naylor, B.A. Endress, and C.G. Parks. In review.  Patterns of non-native plant species invasions in the Wallowa Mountains, Northeast Oregon, USA. Biological Invasions.
  4. Conlisk, E., R. Chung, C. Wisiniski, S. Motheral, and B.A. Endress. 2014. Using spatially explicit population models to evaluate habitat restoration priorities for the coastal cactus wren (Campylorhynchus brunneicapillus sandiegensis). Biological Conservation 175: 42-51.
  5. Pekin, B.K., M.J. Wisdom, B.A. Endress, B.J. Naylor, and C.G. Parks. 2014. Ungulates help maintain shrub diversity in the absence of episodic disturbance in seasonally arid coniferous forest. PloS One 9(1): e86288. doi:10.1371/journal.pone.0086288
  6. López -Toledo, L. Y. Portillo-Cruz, M.T. Pulido, and B.A. Endress. 2013.  Seed dynamics affect the distribution and spatial structure of an endemic palm in a Northwestern Mexican tropical dry forest. Plant Ecology 214: 1115-1125.
  7. Endress, B.A., C.M. Horn, and M.P. Gilmore. 2013.  Mauritia flexuosa palm swamps:  composition, structure, and implications for sustainable management. Forest Ecology and Management 302: 346-353.
  8. Gilmore, M.P., B.A. Endress, and C.M. Horn. 2013.  Socio-cultural importance of Mauritia flexuosa palm swamps (aguajales) and implications for multiple-use management in two Maijuna communities of the Peruvian Amazon.  Journal of Ethnobiology and Ethnomedicine 9: 1-29.
  9. Ash, J.D., D.L. Gorchov, and B.A. Endress. 2013.  Rapid assessment of sustainable harvesting of leaves from the understory palm, Chamaedorea radicalis. Southwestern Naturalist 58: 70-80.
  10. Endress, B.A., C.G. Parks, B.J. Naylor, S.R. Radosevich, and M. Porter. 2012. Grassland response to herbicides and seeding of native grasses six years post-treatment.  Invasive Plant Science and Management 5: 311-316.
  11. Endress, B.A., M.J. Wisdom, M. Vavra, C.G. Parks, B.L. Dick, B.J. Naylor, and J.M. Boyd. 2012. Effects of ungulate herbivory on aspen, cottonwood, and willow development under forest fuels treatment regimes. Forest Ecology and Management 276: 33-40.
  12. López-Toledo, L., B.A. Endress, N. Anten, D. Ackerly and M. Martinez-Ramos. 2012. Resilience to chronic defoliation in an understory dioecious palm. Journal of Ecology 100: 1245–1256.
  13. Horn, C.M. M.P. Gilmore, and B.A. Endress. 2012. Ecological and Socio-economic factors influencing of aguaje (Mauritia flexuosa) resource management in two indigenous communities of the Peruvian Amazon. Forest Ecology and Management 267: 93-103.
  14. McCullough, S.A. and B.A. Endress. 2011. Do postfire mulching treatments affect plant community regeneration in California shrublands? Environmental Management 49: 142-150.
  15. López Toledo, L., C. M. Horn, and B.A. Endress. 2011. Environmental factors and human impacts on non-timber forest products: the case of Brahea aculeata in northwestern Mexico. Forest Ecology and Management 261: 1901-1910.
  16. Endress, B.A., C.G. Parks, S.R. Radosevich, B.J. Naylor, and P. Cunningham. 2008. Herbicide and native grass seeding effects on Potentilla recta infested grasslands. Invasive Plant Science and Management 1: 50-58.
  17. Parks, C. G., B. A. Endress, M. Vavra, M. L. McInnis, and B. J. Naylor. 2008. Cattle, deer, and elk grazing of the invasive plant sulfur cinquefoil. Natural Areas Journal 28: 404–408.
  18. Bartuszevige, A. and B.A. Endress. 2008. Do ungulates facilitate native and exotic plant spread? Seed dispersal by cattle, elk, and deer in northeastern Oregon. Journal of Arid Environments 72: 904-913.
  19. Berry, E., D.L. Gorchov, B.A. Endress, and M.H.H. Stevens. 2008. Source-sink dynamics within a plant population: the impact of substrate and herbivory on palm demography.  Population Ecology 50: 63-77.
  20. Endress, B.A., B.N. Naylor, C.G. Parks, and S.R. Radosevich. 2007. Landscape factors influencing the abundance and dominance of the invasive plant Potentilla recta. Rangeland Ecology and Management 60: 218-224.
  21. Endress, B.A., D.L. Gorchov, and E.J. Berry. 2006. Sustainability of a non-timber forest product: effects of alternative leaf harvest practices over six years on yield and demography of the palm Chamaedorea radicalis. Forest Ecology and Management 234: 181-191.
  22. Perkins, D.L., C.G. Parks, K.A. Dwire, B.A. Endress, and K. Johnson. 2006. Age structure and age-related performance of sulfur cinquefoil (Potentilla recta). Weed Science 54: 87-93.
  23. Parks, C.G., S.R. Radosevich, B.A. Endress, B.J. Naylor, D. Anzinger, L.J. Rew, B.D. Maxwell, K.A. Dwire. 2005.  Non-indigenous plant invasions of the Pacific Northwest mountain ecoregions in the United States of America. Perspectives in Plant Ecology, Evolution and Systematics 7:137-158.
  24. Naylor B.J., B.A. Endress, and C.G. Parks. 2005 Multi-scale detection of sulfur cinquefoil using aerial photography. Rangeland Ecology and Management 58: 447-551.
  25. Endress, B.A., D.L. Gorchov and R.B. Noble. 2004. Nontimber forest product extraction: effects of harvest and browsing on an understory palm. Ecological Applications 14: 1139-1153.
  26. Endress, B.A., D.L. Gorchov, M.B. Peterson, E.P. Serrano. 2004. Harvest of the palm Chamaedorea radicalis, its effects on leaf production, and implications for sustainable management. Conservation Biology 18: 822-830.
  27. Endress, B.A. 2002.  2002. The importance of endemic species to forest succession in Palau. Micronesica 34: 141-153.
  28. Endress, B.A. and J.D. Chinea. 2001. Landscape patterns of tropical forest recovery in the Republic of Palau. Biotropica 33: 555-565.