Alexander Krichels, PhD

Treesearch Publications

• Elizah Z. Stephens, M. Fabiola Pulido Barriga, Aral C. Greene, Alexander Krichels, Meg Kargul, Loralee Larios, Sydney I. Glassman, Peter M. Homyak. 2026. Wildfire alters nitrogen cycling to increase soil emissions of nitric oxide (NO) and the heterogeneity of nitrous oxide (N2O) in California chaparral
• Jamie C. Irby, Alexander Krichels, Marko J. Spasojevic, Darrel G. Jenerette, Erin J. Hanan, Peter M. Homyak. 2026. Precipitation legacy effects on gross N mineralization and nitrification rates in a Pinyon-Juniper dryland under altered precipitation
• Alexander Krichels, Chloe L. Reid, Basubi B. Zhilik, Jacob Kemner, Robert A. York, Sydney I. Glassman, Peter M. Homyak. 2026. Fall prescribed burns deplete surface soil C pools more than spring burns in a young mixed-conifer forest
• Alexander Krichels, Alina Vulcan, Katelyn P. Driscoll. 2026. Varying effects of stream restoration on riparian soil carbon persistence and methane emissions in the southern Rocky Mountains, United States
• Alexander Krichels, Elizah Z. Stephens, Chloe Reid, M. Fabiola Pulido Barriga, Maria E. Ordonez, Jennie R. McLaren, Meg Kargul, Loralee Larios, Sydney I Glassman, Peter M. Homyak. 2025. Wildfire-induced losses of soil particulate and mineral-associated organic carbon persist for over 4 years in a chaparral ecosystem
• Sharon Zhao, Alexander Krichels, Elizah Z. Stephens, Anthony D. Calma, Emma L. Aronson, G. Darrel Jenerette, Marko J. Spasojevic, Joshua P. Schimel, Erin J. Hanan, Peter M. Homyak. 2025. Nitrogen availability and changes in precipitation alter microbially mediated NO and N2O emissions from a Pinyon-Juniper dryland
• Alexander Krichels, Robert A. Sanford, Joanne C. Chee-Sanford, Lynn Connor, Rachel Van Allen, Angela D. Kent, Wendy H. Yang. 2025. Distinct N-cycling microbial communities contribute to microtopographic variation in soil N2O emissions from denitrification
• Jianning Ren, Erin J. Hanan, Aral Greene, Christina Tague, Alexander Krichels, William D. Burke, Joshua P. Schimel, Peter M. Homyak. 2024. Simulating the role of biogeochemical hotspots in driving nitrogen export from dryland watersheds
• Alexander Krichels, Aral C. Greene, Elizah Z. Stephens, Sharon Zhao, Joshua P. Schimel, Emma L. Aronson, Erin J. Hanan, Peter M. Homyak. 2024. Nitrifier controls on soil NO and N2O emissions in three chaparral ecosystems under contrasting atmospheric N inputs
• Siyi Sun, M. Francesca Cotrufo, R. A. Viscarra Rossel, Carsten W. Mueller, Morimaru Kida, Ailsa G. Hardie, Alec Mackay, Alexander Krichels, Wulf Amelung, Amit Kumar, Azamat Suleymanov, Baoku Shi, Bernard Jackson Cosby, César Plaza, César Terrer, Chang Liang, Chang Liao, Christopher Just, Ding Guo, Emanuele Lugato, Enqing Hou, Fan Ding, Fazhu Zhao, Feng Tao, Fernando T. Maestre, Franco Bilotto, Fuzhong Wu, Gisela V. García, Gongwen Luo, Guangxuan Han, Guillermo A. Studdert, Guillermo Hernandez-Ramirez, Guoxiang Niu, Gervasio Piñeiro, Gustavo Saiz, Haikuo Zhang, Hamada Abdelrahman, Haodi Xu, Inma Lebron, Irina Kurganova, Jennifer Blesh, Jeppe Å. Kristensen, Ji Liu, Jiacong Zhou, Jianping Wu, Jitendra Ahirwal, Junji Cao, Jørgen E. Olesen, Karin Kauer, Katerina Georgiou, Kees Jan van Groenigen, Kristof Van Oost, Kwame Agyei Frimpong, Lei Deng, Liane G. Benning, Liang Guo, Lizzie Mujuru, Manuel Delgado-Baquerizo, Maoz Dor, Mehdi Rahmati, Min Luo, Olga Kalinina, Olli Hyvärinen, Pablo García-Palacios, Paige Hansen, Patra Rounak, Pengpeng Duan, Pengzhi Zhao, Peter M. Homyak, Rajan Ghimire, Renaldas Žydelis, Roland Bol, Ronaldo Vibart, Ruiying Chang, Ruyi Luo, Sebastián Villarino, Shuai Xue, Shuli Niu, Shuotong Chen, Tengfei Yu, Steven J. Hall, Thomas Kätterer, Tida Ge, Vusumuzi Erick Mbanjwa, Vyacheslav M. Semenov, Weixing Liu, Weiyu Shi, Wei Zhang, Wolfgang Wanek, Wolfram Buss, Xiangrong Cheng, Xiankai Lu, Xiaojun Shi, Xiaoli Cheng, Xiaorong Wei, Xiaotong Liu, Xuhui Zhou, Yahya Kooch, Yangquanwei Zhong, Yanjiang Cai, Yan Yang, Yiqi Luo, Yixuan Zhang, Yunbin Qin, Yunting Fang, Yuting Liang, Yuyi Li, Zengming Chen, Zhanfeng Liu, Zhaoliang Song, Zhongkui Luo, Zhisheng An, Ji Chen. 2023. Global hotspots of particulate organic carbon losses under climate change
• Alexander Krichels, G. Darrel Jenerette, Hannah Shulman, Stephanie Piper, Aral C. Greene, Holly M. Andrews, Jon Botthoff, James O. Sickman, Emma L. Aronson, Peter M. Homyak. 2023. Bacterial denitrification drives elevated N2O emissions in arid southern California drylands
• Alexander Krichels, Peter M. Homyak, Emma L. Aronson, James O. Sickman, Jon Botthoff, Aral C. Greene, Holly M. Andrews, Hannah Shulman, Stephanie Piper, G. Darrel. Jenerette. 2023. Soil NH3 emissions across an aridity, soil pH, and N deposition gradient in southern California

• Program
  

  Maintaining Resilient Dryland Ecosystems

  https://research.fs.usda.gov/rmrs/programs/drylandecosystems
  Station

  Rocky Mountain Research Station
• Project
  

  Science to support high priority data needs at stream restoration sites in priority landscapes throughout the Forest Service Southwestern Region

  https://research.fs.usda.gov/rmrs/projects/bil-science-support-high-priority-data-needs-stream-restoration-sites-priority
  Station

  Rocky Mountain Research Station

Articles

• Article
  

  Stream restoration can increase riparian soil carbon pools

  https://research.fs.usda.gov/rmrs/articles/stream-restoration-can-increase-riparian-soil-carbon-pools
• Article
  

  Spring prescribed burning can maintain soil carbon

  https://research.fs.usda.gov/rmrs/articles/spring-prescribed-burning-can-maintain-soil-carbon
• Article
  

  Wildfires deplete soil carbon for over four years

  https://research.fs.usda.gov/rmrs/articles/wildfires-deplete-soil-carbon-over-four-years
• Article
  

  Distinct N-cycling microbial communities contribute to microtopographic variation in soil nitrous oxide emissions

  https://research.fs.usda.gov/rmrs/articles/distinct-n-cycling-microbial-communities-contribute-microtopographic-variation-soil
• Article
  

  Bacterial denitrification drives elevated nitrous oxide emissions in arid southern California drylands

  https://research.fs.usda.gov/rmrs/articles/bacterial-denitrification-drives-elevated-nitrous-oxide-emissions-arid-southern

• University of Illinois at Urbana-Champaign, Ph.D, Ecology, Evolution, And Conservation Biology, 2019
• Oberlin College, B.A., Biology and Environmental Studies, 2013