Yvette K. Ortega

Treesearch Publications

• Mandy L. Slate, Phil G. Hahn, Yvette K. Ortega, Marisa Mancillas, Christoph Rosche, Dean E. Pearson. 2025. Plant regeneration trait syndromes, tradeoffs, and linkages to adult abundance for native and exotic grassland plants
• Xiaofei Li, Dean E. Pearson, Yvette K. Ortega, Lin Jiang, Shaopeng Wang, Qiang Gao, Deli Wang, Yann Hautier, Zhiwei Zhong. 2025. Nitrogen inputs suppress plant diversity by overriding consumer control
• Dean E. Pearson, Yvette K. Ortega, Ylva Lekberg. 2024. Invaders break assembly rules to beat the natives: How cheatgrass cheats
• Tianyun Li, Zhiwei Zhong, Dean E. Pearson, Yvette K. Ortega, Wenjun Li, Yanan Li, Hui Zhu, Anita C. Risch, Deli Wang. 2023. Parasites as ecosystem modulators: Foliar pathogens suppress top-down effects of large herbivores
• Jane E. Tuthill, Yvette K. Ortega, Dean E. Pearson. 2023. Seed size, seed dispersal traits, and plant dispersion patterns for native and introduced grassland plants
• Dean E. Pearson, Yvette K. Ortega, Ozkan Eren, Diego Villarreal, Ylva Lekberg, Jose Hierro. 2023. Exotic success following disturbance explained by weak native resilience and ruderal exotic bias
• Dean E. Pearson, Ozkan Eren, Yvette K. Ortega, Jose L. Hierro, Birsen Karakus, Sascha Kala, Lorinda Bullington, Ylva Lekberg. 2022. Combining biogeographical approaches to advance invasion ecology and methodology
• Dean E. Pearson, Yvette K. Ortega. 2022. Restoration Catch-22: Overcoming issues with seed predation by small mammals when trying to restore habitat
• Dean E. Pearson, Yvette K. Ortega, Hillary E. Cimino, Daniel L. Mummy, Philip W. Ramsey. 2022. Does active plant restoration passively restore native fauna community structure and function?
• Lukasz Dylewski, Yvette K. Ortega, Michal Bogdziewicz, Dean E. Pearson. 2021. Seed predator effects on plants: Moving beyond time-corrected proxies
• Zhiwei Zhong, Xiaofei Li, Dirk Sanders, Yiming Liu, Ling Wang, Yvette K. Ortega, Dean E. Pearson, Deli Wang. 2021. Soil engineering by ants facilitates plant compensation for large herbivore removal of aboveground biomass
• Woongsoon Jang, Justin S. Crotteau, Yvette K. Ortega, Sharon M. Hood, Christopher R. Keyes, Dean E. Pearson, Duncan C. Lutes, Anna Sala. 2021. Native and non-native understory vegetation responses to restoration treatments in a dry conifer forest over 23 years
• Lukasz Dylewski, Yvette K. Ortega, Michal Bogdziewics, Dean E. Pearson. 2020. Seed size predicts global effects of small mammal seed predation on plant recruitment
• Yvette K. Ortega, Morgan T. Valliant, Dean E. Pearson. 2019. To list or not to list: Using time since invasion to refine impact assessment for an exotic plant proposed as noxious
• Dean E. Pearson, Morgan Valliant, Chris Carlson, Giles C. Thelen, Yvette K. Ortega, John L. Orrock, Matthew D. Madsen. 2019. Spicing up restoration: Can chili peppers improve restoration seeding by reducing seed predation?
• Dean E. Pearson, Yvette K. Ortega, Justin B. Runyon, Jack L. Butler. 2018. Secondary invasion re-redefined: The distinction between invader-facilitated and invader-contingent invasions as subclasses of secondary invasion
• Dean E. Pearson, Yvette K. Ortega, Ozkan Eren, Jose L. Hierro. 2018. Community assembly theory as a framework for biological invasions
• Dean E. Pearson, Ozkan Eren, Yvette K. Ortega, Diego Villarreal, Muhyettin Senturk, M. Florencia Miguel, C. Miguel Weinzettel, Anibal Prina, Jose L. Hierro. 2018. Are invasive plants more abundant in the introduced versus native range?
• Dean E. Pearson, Yvette K. Ortega, Diego Villarreal, Ylva Lekberg, Marina C. Cock, Ozkan Eren, Jose L. Hierro. 2018. The fluctuating resource hypothesis explains invasibility, but not exotic advantage following disturbance
• Dean E. Pearson, Yvette K. Ortega, John L. Maron. 2017. The tortoise and the hare: Reducing resource availability shifts competitive balance between plant species
• Lauren P. Waller, Ragan M. Callaway, John N. Klironomos, Yvette K. Ortega, John L. Maron. 2016. Reduced mycorrhizal responsiveness leads to increased competitive tolerance in an invasive exotic plant
• John L. Maron, Alyssa Laney Smith, Yvette K. Ortega, Dean E. Pearson, Ragan M. Callaway. 2016. Negative plant-soil feedbacks increase with plant abundance, and are unchanged by competition
• Sarah M. Pinto, Yvette K. Ortega. 2016. Native species richness buffers invader impact in undisturbed but not disturbed grassland assemblages
• Dean E. Pearson, Yvette K. Ortega, Justin B. Runyon, Jack L. Butler. 2016. Secondary invasion: The bane of weed management
• Dean E. Pearson, Yvette K. Ortega, Jack L. Butler. 2015. Invasive Species Science Update (No. 8)
• Dean E. Pearson, Yvette K. Ortega, Ozkan Eren, Jose L. Hierro. 2015. Quantifying "apparent" impact and distinguishing impact from invasiveness in multispecies plant invasions
• Dean E. Pearson, Yvette K. Ortega, Jack L. Butler. 2014. Invasive Species Science Update (No. 7)
• Yvette K. Ortega, Aubree Benson, Erick Greene. 2014. Invasive plant erodes local song diversity in a migratory passerine
• Yvette K. Ortega, Leigh F. Greenwood, Ragan M. Callaway, Dean E. Pearson. 2014. Different responses of congeneric consumers to an exotic food resource: Who gets the novel resource prize?
• Yvette K. Ortega, Dean E. Pearson. 2013. Spotted knapweed: Effects of climate change on the invasiveness and biological control
• Dean E. Pearson, Yvette K. Ortega. 2013. Biogeography of plant invasions
• John L. Maron, Dean E. Pearson, Teal Potter, Yvette K. Ortega. 2012. Seed size and provenance mediate the joint effects of disturbance and seed predation on community assembly
• Yvette K. Ortega, Dean E. Pearson, Lauren P. Waller, Nancy J. Sturdevant, John L. Maron. 2012. Population-level compensation impedes biological control of an invasive forb and indirect release of a native grass
• Dean E. Pearson, Yvette K. Ortega, Samantha J. Sears. 2012. Darwin's naturalization hypothesis up-close: Intermountain grassland invaders differ morphologically and phenologically from native community dominants
• R. Zwolak, Dean E. Pearson, Yvette K. Ortega, E. E. Crone. 2012. Mechanisms driving postfire abundance of a generalist mammal
• Dean E. Pearson, Yvette K. Ortega. 2011. Invasive Species Science Update (No. 5)
• Yvette K. Ortega, Dean E. Pearson. 2011. Long-term effects of weed control with picloram along a gradient of spotted knapweed invasion
• Yvette K. Ortega, Dean E. Pearson. 2010. Effects of picloram application on community dominants vary with initial levels of spotted knapweed (Centaurea stoebe) invasion
• Rafal Zwolak, Dean E. Pearson, Yvette K. Ortega, Elizabeth E. Crone. 2010. Fire and mice: Seed predation moderates fire's influence on conifer recruitment
• Yvette K. Ortega, Dean E. Pearson. 2009. Factors influencing plant invasiveness
• Dean E. Pearson, Yvette K. Ortega. 2009. Managing invasive plants in natural areas: Moving beyond weed control
• Allison K. Hansen, Yvette K. Ortega, Diana L. Six. 2009. Comparison of ground beetle (Coleoptera: Carabidae) assemblages in Rocky Mountain savannas invaded and un-invaded by an exotic forb, spotted knapweed
• Kerry Foresman, Elizabeth Crone, Dean E. Pearson, Yvette K. Ortega, Rafal Zwolak. 2008. Are mice eating up all the pine seeds?
• Sharon Ritter, Greg G. Jones, Alan E. Watson, Ward McCaughey, Mick Harrington, Rafal Zwolak, Kerry Foresman, Elizabeth Crone, Dean E. Pearson, Yvette K. Ortega, Dan Loeffler. 2008. ECO-Report - Finding common ground: Montana Forest Restoration Committee
• Sharon Ritter, Janie Canton-Thompson, Leonard F. Ruggiero, Greg G. Jones, Janet Sullivan, Ward McCaughey, Yvette K. Ortega, Neal Christensen, Mick Harrington, Deborah S. Page-Dumroese. 2007. ECO-Report - Scientific independence: A key to credibility
• Yvette K. Ortega. 2007. Impacts of invasive plants on songbirds: Using song structure as an indicator of habitat quality
• Nancy Sturdevant, Sandy Kegley, Yvette K. Ortega, Dean E. Pearson. 2006. Evaluation of establishment of Cyphocleonus achates and its potential impact on spotted knapweed
• Yvette K. Ortega, Kevin S. McKelvey, Diana Lee Six. 2006. Invasion of an exotic forb impacts reproductive success and site fidelity of a migratory songbird
• Yvette K. Ortega, Dean E. Pearson. 2005. Weak vs. strong invaders of natural plant communities: Assessing invasibility and impact
• Janie Canton-Thompson, Jim Saveland, Sharon Ritter, Yvette K. Ortega, Dean E. Pearson, Mick Harrington, Elaine K. Sutherland, Clint Cook, Greg Jones. 2004. ECO-Report - Great issues, great diversions
• Yvette K. Ortega, Dean E. Pearson, Kevin S. McKelvey. 2004. Effects of biological control agents and exotic plant invasion on deer mouse populations
• Janie Canton-Thompson, Marcia Patton-Mallory, Sue Heald, Sharon Ritter, Robert D. Pfister, Dean E. Pearson, Yvette K. Ortega, Alan E. Watson, Elaine K. Sutherland, Greg Jones. 2003. ECO-Report - The case for research: How it makes a difference to managers
• Michael K. Schwartz, L. S. Mills, Yvette K. Ortega, L. F. Ruggiero, F. W. Allendorf. 2003. Landscape location affects genetic variation of Canada lynx (Lynx canadensis)
• Dean E. Pearson, Yvette K. Ortega, Len Ruggiero. 2003. Trap-induced mass declines in small mammals: Mass as a population index
• Janie Canton-Thompson, Sharon Ritter, Dave Campbell, Julie Schreck, Peter Kolb, Brooke Thompson, Hans Zuuring, Alan E. Watson, Yvette K. Ortega, Kevin S. McKelvey, Elaine K. Sutherland, Greg Jones. 2002. ECO-Report - Fire recovery in the Bitterroot: "It’s a lot of work!"
• Yvette K. Ortega, David E. Capen. 2002. Roads as edges: Effects on birds in forested landscapes
• Janie Canton-Thompson, Greg G. Jones, Jane Kapler Smith, Peter Rice, Mick Harrington, Elaine K. Sutherland, Kevin S. McKelvey, Yvette K. Ortega, Ward McCaughey, Robert Pfister, Greg G. Jones, Larry Swanson, Vita Wright. 2001. ECO-Report - One ranger's experience in summer 2000
• Yvette K. Ortega, Dean E. Pearson. 2001. Occurrences of the western skink (Eumeces skiltonianus) in grasslands of western Montana
• Dean E. Pearson, Yvette K. Ortega. 2001. An indirect dispersal pathway for spotted knapweed seeds via deer mice and great-horned owls
• Dean E. Pearson, Yvette K. Ortega, Kevin S. McKelvey, Leonard F. Ruggiero. 2001. Small mammal communities and habitat selection in Northern Rocky Mountain bunchgrass: Implications for exotic plant invasions
• Janie Canton-Thompson, Jane Kapler Smith, Greg G. Jones, Perry J. Brown, Stephen F. Arno, Orville L. Daniels, Dale A. Burk, Colin C. Hardy, Dave Silvieus, Kristi D. Pflug, Bruce Winhorst, Brooke Thompson, Yvette K. Ortega, Kevin S. McKelvey, Tom Thompson, Dean E. Pearson, Cathy Stewart, Janet Sullivan. 1999. ECO-Report - 1999 Symposium highlights five years of learning
• Kevin S. McKelvey, Yvette K. Ortega, Gary M. Koehler, Keith B. Aubry, J. David Brittell. 1999. Canada lynx habitat and topographic use patterns in north central Washington: A reanalysis [Chapter 10]
• Yvette K. Ortega, David E. Capen. 1999. Effects of forest roads on habitat quality for Ovenbirds in a forested landscape

• Program
  

  Wildlife Ecology

  https://research.fs.usda.gov/rmrs/programs/wildlife-ecology
  Station

  Rocky Mountain Research Station
• Center or Group
  

  Invasive Species Working Group

  https://research.fs.usda.gov/rmrs/centers/invasivespeciesworkinggroup
  Station

  Rocky Mountain Research Station

• University of California, Berkeley, B.A., Environmental Science, 1992
• University of Vermont, M.S., Wildlife and Fisheries Biology, 1998