Sasha C Reed, Ph.D.
Dr. Sasha Reed is an ecologist focused on understanding how our planet's ecosystems work and what factors determine the services they provide. The study sites and methods Sasha uses are diverse, and with each of her projects she strives to provide scientific information that helps our nation address challenges, solve problems, and maximize opportunities.
Sasha seeks to provide useful information for land managers, policy-makers, and the general public. Sasha uses both basic and applied scientific approaches to improve our understanding of the fundamental controls over ecosystems, to determine how these systems respond to change, and to explore solutions for addressing relevant problems. Sasha works closely with a range of collaborators - including federal agency partners (BLM, NPS, DOE, DoD, BIA, USFS, USFWS) - in designing research studies, conducting information and technology transfer, and performing outreach activities. Some of her primary research interests include understanding how drought and increasing temperatures affect ecosystems, exploring a diversity of energy options for meeting national demand, assessing the consequences of exotic plant invasion and ways to combat them, and establishing novel management options for increased effectiveness and efficiency in restoration and reclamation. Sasha attempts to conduct research that is innovative, collaborative, and useful.
Professional Experience
Research Ecologist, USGS, Southwest Biological Science Center, Moab, UT: May 2008 - present
Research Ecologist, USGS-SCEP Program, Moab, UT: 2005 - 2007 summers only
Fellow, NSF Graduate Research Fellowship: Awarded April 2003; deferred until September 2005-May 2008
Fellow, National Science Foundation IGERT Fellowship, Carbon Climate and Society Initiative (CCSI): August 2003-August 2005.
Education and Certifications
Ph.D. in Biogeochemistry, 2002-2008: University of Colorado at Boulder, Department of Ecology & Evolutionary Biology and Institute of Arctic & Alpine Research (INSTAAR).
B.A. in Organic Chemistry, 1993-1997: Colgate University, Department of Chemistry, Hamilton, NY. Graduated magna cum laude.
Honors and Awards
Joanne Simpson Medal, American Geophysical Union (AGU). September 2024.
Fellow, American Geophysical Union (AGU). August 2024.
Fellow, Ecological Society of America (ESA). April 2024.
Elected Member-At-Large, Ecological Society of America (ESA). August 2020-August 2022.
Ecological Society of America (ESA) Early Career Fellow. March 2016.
Presidential Early Career Award for Scientists and Engineers (PECASE). October 2011.
Star Award, Department of the Interior. October 2010, May 2000.
Graduate Student Research and Creative Works Award, University of Colorado at Boulder. May 2008.
USGS Student Career Experience Program (SCEP) Fellowship. June-August of 2006 & 2007.
Student Policy Award, Ecological Society of America (ESA). September 2006.
AAAS Program for Excellence in Science. August 2006.
Lawrence Award. April 1996.
Phi Ea Sigma University Honor Society Awarded Membership. April 1994-May 1997.
Phi Eta Sigma Aid Committee Selected Board Member. September 1995-May 1997.
Barry Goldwater Award Nominee. November 1994.
Science and Products
Filter Total Items: 19
Filter Total Items: 188
Dryland soil recovery after disturbance across soil and climate gradients of the Colorado Plateau Dryland soil recovery after disturbance across soil and climate gradients of the Colorado Plateau
Drylands impacted by energy development often require costly reclamation activities to reconstruct damaged soils and vegetation, yet little is known about the effectiveness of reclamation practices in promoting recovery of soil quality due to a lack of long-term and cross-site studies. Here, we examined paired on-pad and adjacent undisturbed off-pad soil properties over a 22-year...
Authors
Kathryn Eckhoff, Sasha C. Reed, John B. Bradford, Nikita Daly, Keven Griffen, Robin Reibold, Randi Lupardus, Seth Munson, Aarin Sengsirirak, Miguel Villarreal, Michael Duniway
Hotspots of biogeochemical activity linked to aridity and plant traits across global drylands Hotspots of biogeochemical activity linked to aridity and plant traits across global drylands
Perennial plants create productive and biodiverse hotspots, known as fertile islands, beneath their canopies. These hotspots largely determine the structure and functioning of drylands worldwide. Despite their ubiquity, the factors controlling fertile islands under conditions of contrasting grazing by livestock, the most prevalent land use in drylands, remain virtually unknown. Here we...
Authors
David J. Eldridge, Jingyi Ding, Josh Dorrough, Manuel Delgado-Baquerizo, Osvaldo Sala, Nicolas Gross, Yoann Bagousse-Pinguet, Max Mallen-Cooper, Hugo Saiz, Sergio Asensio, Victoria Ochoa, Beatriz Gozalo, Emilio Guirado, Miguel García-Gómez, Enrique Valencia, Jaime Martinez-Valderrama, Cesar Plaza, Mehdi Abedi, Negar Ahmadian, Rodrigo Ahumada, Julio Alcantara, Fateh Amghar, Luisa Azevedo, Farah Salem, Miguel Berdugo, Niels Blaum, Bazartseren Boldgiv, Matthew A. Bowker, Donaldo Bran, Chongfeng Bu, Rafaella Canessa, Andrea Castillo-Monroy, Ignacio Castro, Patricio Castro-Quezada, Simone Cesarz, Roukaya Chibani, Abel Conceicao, Anthony Darrouzet-Nardi, Yvonne Davila, Balazs Deak, Paloma Diaz-Martinez, David Donoso, Andrew David Dougill, Jorge Duran, Nico Eisenhauer, Hamid Ejtehadi, Carlos Espinosa, Alex Fajardo, Mohammad Farzam, Ana Foronda, Jorgelina Franzese, Lauchlan Fraser, Juan Gaitan, Katja Geissler, Sofia Gonzalez, Elizabeth Gusman-Montalvan, Rosa Hernandez, Norbert Holzel, Frederic Hughes, Oswaldo Jadan, Anke Jentsch, Mengchen Ju, Kudzai Kaseke, Melanie Kobel, Anika Lehmann, Pierre Liancourt, Anja Linstadter, Michelle Louw, Quanhui Ma, Mancha Mabaso, Gillian Maggs-Kolling, Thulani Makhalanyane, Oumarou Issa, Eugene Marais, Mitchel P McClaran, Betty Mendoza, Vincent Mokoka, Juan Mora, Gerardo Moreno, Seth Munson, Alice Nunes, Gabriel Oliva, Gastón R. Oñatibia, Brooke B. Osborne, Guadalupe Peter, Margerie Pierre, Yolanda Pueyo, R. Emiliano Quiroga, Sasha C. Reed, Ana Rey, Pedro Rey, Victor Gomez, Víctor Rolo, Matthias C. Rillig, Peter le Roux, Jan Ruppert, Ayman Salah, Phokgedi Sebei, Anarmaa Sharkhuu, Ilan Stavi, Colton R. A. Stephens, Alberto Teixido, Andrew Thomas, Katja Tielborger, Silvia Robles, Samantha Travers, Orsolya Valko, Liesbeth van den Brink, Frederike Velbert, Andreas von Hessberg, Wanyoike Wamiti, Deli Wang, Lixin Wang, Glenda M. Wardle, Laura Yahdjian, Eli Zaady, Yuanming Zhang, Xiaobing Zhou, Fernando Maestre
Inoculated biocrust cover and functions diverged over a gradient of soil textures and water availability Inoculated biocrust cover and functions diverged over a gradient of soil textures and water availability
Restoring biological crust (biocrust) in disturbed drylands is challenging due to the difficult environmental conditions, such as limited soil moisture, low soil nutrients, and extreme temperatures, that impede growth. Understanding how the key components of biocrust—mosses, lichens, and cyanobacteria—react to different environmental factors informs the optimal timing, locations, and...
Authors
Kristina Young, Sasha C. Reed, Michael Morton, Matthew A. Bowker
A conserved interdomain microbial network underpins cadaver decomposition despite environmental variables A conserved interdomain microbial network underpins cadaver decomposition despite environmental variables
Microbial breakdown of organic matter is one of the most important processes on Earth, yet the controls of decomposition are poorly understood. Here we track 36 terrestrial human cadavers in three locations and show that a phylogenetically distinct, interdomain microbial network assembles during decomposition despite selection effects of location, climate and season. We generated a...
Authors
Zachary Burcham, Aeriel Belk, Bridget McGivern, Amina Bouslimani, Parsa Ghadermazi, Cameron Martino, Liat Shenhav, Anru Zhang, Pixu Shi, Alexandra Emmons, Heather Deel, Zhenjiang Xu, Victoria Nieciecki, Qiyun Zhu, Michael Shaffer, Morgan Panitchpakdi, Kelly Weldon, Kalen Cantrell, Asa Ben-Hur, Sasha C. Reed, Greg Humphry, Gail Ackermann, Daniel McDonald, Siu Chan, Melissa Connor, Derek Boyd, Jake Smith, Jenna Watson, Giovanna Vidoli, Dawnie Steadman, Aaron Lynne, Sibyl Bucheli, Pieter Dorrestein, Kelly Wrighton, David Carter, Rob Knight, Jessica Metcalf
Trajectories and tipping points of piñon–juniper woodlands after fire and thinning Trajectories and tipping points of piñon–juniper woodlands after fire and thinning
Piñon–juniper (PJ) woodlands are a dominant community type across the Intermountain West, comprising over a million acres and experiencing critical effects from increasing wildfire. Large PJ mortality and regeneration failure after catastrophic wildfire have elevated concerns about the long-term viability of PJ woodlands. Thinning is increasingly used to safeguard forests from fire and...
Authors
Michala Phillips, Cara Lauria, Tova Spector, John B. Bradford, Catherine Gehring, Brooke B. Osborne, Armin Howell, Edmund Grote, Renee Rondeau, Gillian Trimber, Benjamin Robinson, Sasha C. Reed
Tropical forests and global change: Biogeochemical responses and opportunities for cross-site comparisons, an organized INSPIRE session at the 108th Annual Meeting, Ecological Society of America, Portland, Oregon, USA, August 2023 Tropical forests and global change: Biogeochemical responses and opportunities for cross-site comparisons, an organized INSPIRE session at the 108th Annual Meeting, Ecological Society of America, Portland, Oregon, USA, August 2023
Tropical forests play a critical role in the global carbon (C) cycle. These ecosystems maintain the highest rates of net primary production (NPP) on Earth (Hengl et al., 2017), contain c. 30% of terrestrial C stocks (Jobbagy & Jackson, 2000), and have some of the largest stores of fine-root biomass globally (Jackson et al., 1996), as well as higher fine-root production and turnover rates...
Authors
Daniela Cusack, Sasha C. Reed, Kelly M. Andersen, Damla Cinoğlu, Matthew E. Craig, Lee Dietterich, J.A. Hogan, Jennifer Holmes, Andrew Nottingham, Rebecca Ostertag, Fiona Soper, Tana Wood, Michelle Y. Wong
Extreme drought impacts have been underestimated in grasslands and shrublands globally Extreme drought impacts have been underestimated in grasslands and shrublands globally
Drought has well-documented societal and economic consequences. Climate change is expected to intensify drought to even more extreme levels, but because such droughts have been historically rare, their impact on ecosystem functioning is not well known. We experimentally imposed the most frequent type of intensified drought—one that is ~1 y in duration—at 100 grassland and shrubland sites
Authors
Melinda Smith, Kate Wilkins, Martin Holdrege, Peter Wilfahrt, Scott Collins, Alan K. Knapp, Osvaldo Sala, Jeffrey S. Dukes, Richard Phillips, Laura Yahdjian, Laureano Gherardi, Timothy Ohlert, Claus Beier, Lauchlan Fraser, Anke Jentsch, Michael Loik, Fernando Maestre, Sally Power, Qiang Yu, Andrew Felton, Seth Munson, Yiqi Luo, Hamed Abdoli, Mehdi Abedi, Concepcion Alados, Juan Alberti, Moshe Alon, Hui An, Brian Anacker, Maggie Anderson, Harald Auge, Seton Bachle, Khadijeh Bahalkeh, Michael Bahn, Amgaa Batbaatar, Taryn Bauerle, Karen Beard, Kai Behn, Ilka Beil, Lucio Biancari, Irmgard Blindow, Viviana Bondaruk, Elizabeth Borer, Edward Bork, Carlos Bruschetti, Kerry Byrne, James F. Cahill Jr., Dianela Calvo, Michele Carbognani, Augusto Cardoni, Cameron Carlyle, Miguel Castillo-Garcia, Scott Chang, Jeff Chieppa, Marcus Cianciaruso, Ofer Cohen, Amanda Cordeiro, Daniela Cusack, Sven Dahlke, Pedro Daleo, Carla M. D'Antonio, Lee Dietterich, Tim Doherty, Maren Dubbert, Anne Ebling, Nico Eisenhauer, Felicia Fischer, T’ai Forte, Tobias Gebauer, Beatriz Gozalo, Aaron Greenville, Karlo Guidoni-Martins, Heather Hannusch, Siri Haugum, Yann Hautier, Mariet Hefting, Hugh Henry, Daniela Hoss, Johannes Ingrisch, Oscar Iribarne, Forest Isbell, Yari Johnson, Samuel E. Jordan, Eugene Kelly, Kaitlin Kimmel, Juergen Kreyling, Gyorgy Kroel-Dulay, Alicia Kropfl, Angelika Kubert, Andrew Kulmatiski, Eric Lamb, Klaus Larsen, Julie Larson, Jason Lawson, Cintia Leder, Anja Linstadter, Jielin Liu, Shirong Liu, Alexandra Lodge, Grisel Longo, Alejandro Loydi, Junwei Luan, Frederick Lubbe, Craig Macfarlane, Kathleen Mackie-Haas, Andrey Malyshev, Adrian Maturano-Ruiz, Thomas Merchant, Daniel B. Metcalfe, Akira Mori, Edwin Mudongo, Gregory Newman, Uffe Nielsen, Dale Nimmo, Yujie Niu, Paola Nobre, Rory O’Connor, Roma Ogaya, Gastón R. Oñatibia, Ildiko Orban, Brooke B. Osborne, Rafael Otfinowski, Meelis Pärtel, Josep Penuelas, Pablo L. Peri, Guadalupe Peter, Alessandro Petraglia, Catherine Picon-Cochard, Valerio Pillar, Juan Pineiro-Guerra, Laura Ploughe, Robert Plowes, Cristy Portales-Reyes, Suzanne Prober, Yolanda Pueyo, Sasha C. Reed, Euan Ritchie, Dana Rodriguez, William Rogers, Christiane Roscher, Ana M. Sánchez, Bráulio A. Santos, Maria Scarfo, Eric Seabloom, Baoku Shu, Lara Souza, Andreas Stampfli, Rachel Standish, Marcelo Sternberg, Wei Sun, Marie Sunnemann, Michelle Tedder, Pal Thorvaldsen, Dashuan Tian, Katja Tielborger, Alejandro Valdecantos, Liesbeth van den Brink, Vigdis Vandvik, Mathew Vankoughnett, Liv Velle, Changhui Wang, Yi Wang, Glenda M. Wardle, Christiane Werner, Cunzheng Wei, Georg Wiehl, Jennifer L. Williams, Amelia Wolf, Michaela Zeiter, Fawei Zhang, Juntao Zhu, Ning Zong, Xiaoan Zuo
Reply to comment on "Five decades of observed daily precipitation reveal longer and more variable drought events across much of the western United States" Reply to comment on "Five decades of observed daily precipitation reveal longer and more variable drought events across much of the western United States"
Paciorek and Wehner raise important questions around our use of the Mann-Kendall nonparametric trend test on smoothed data for analyzing long-term hydrometeorological trends in Zhang et al. (2021, https://doi.org/10.1029/2020gl092293). We thank them for initiating this important conversation and their gracious cooperation in exploring the issues addressed in their comment. In this reply...
Authors
Joel Biederman, Fangyue Zhang, Matthew Dannenberg, Dong Yan, Sasha C. Reed, William Smith
Respiratory acclimation of tropical forest roots in response to in situ experimental warming and hurricane disturbance Respiratory acclimation of tropical forest roots in response to in situ experimental warming and hurricane disturbance
Climate projections predict higher temperatures and more frequent hurricanes in the tropics. Tropical plants subjected to these stresses may respond by acclimating their physiology. We investigated tropical forest root respiration in response to in situ experimental warming and hurricane disturbance in eastern Puerto Rico. We measured mass-normalized root specific respiration, root...
Authors
Rob Tunison, Tana Wood, Sasha C. Reed, Molly Cavaleri
Cultivating resilience in dryland soils: An assisted migration approach to biological soil crust restoration Cultivating resilience in dryland soils: An assisted migration approach to biological soil crust restoration
Land use practices and climate change have driven substantial soil degradation across global drylands, impacting ecosystem functions and human livelihoods. Biological soil crusts, a common feature of dryland ecosystems, are under extensive exploration for their potential to restore the stability and fertility of degraded soils through the development of inoculants. However, stressful...
Authors
Sierra Jech, Natalie Day, Nichole Barger, Anita Antoninka, Matthew A. Bowker, Sasha C. Reed, Colin Tucker
Unraveling mechnisms underlying effects of wetting–drying cycles on soil respiration in a dryland Unraveling mechnisms underlying effects of wetting–drying cycles on soil respiration in a dryland
Rewetting of dry soils usually stimulates soil carbon (C) emission, a phenomenon known as the Birch effect. Soil C cycling in drylands, which store approximately one third of terrestrial soil organic C (SOC), is strongly affected by wetting–drying cycles. However, the physical, chemical, and biological mechanisms that link rewetting cycles with dryland soil C cycling have not been...
Authors
Guopeng Liang, Sasha C. Reed, John M. Stark, Bonnie Waring
Time, climate, and soil settings set the course for reclamation outcomes following dryland energy development Time, climate, and soil settings set the course for reclamation outcomes following dryland energy development
Soil attributes, climate, and time since reclamation have important implications for oil and gas reclamation success on drylands. It is uncertain if reclaimed well pads, on highly degraded drylands, can successfully regain ecological function or meet indicator benchmarks for reclamation. Here, our goals were to assess patterns in reclamation outcomes relative to (1) soil attributes...
Authors
Randi Lupardus, Aarin Sengsirirak, Keven Griffen, Anna Knight, Brandon McNellis, John B. Bradford, Seth Munson, Sasha C. Reed, Miguel Villarreal, Michael Duniway
Non-USGS Publications**
Sullivan, B.W., Alvarez-Clare, S., Castle, S.C., Porder, S., Reed, S.C., Schreeg, L., Townsend, A.R. and Cleveland, C.C., 2014. Assessing nutrient limitation in complex forested ecosystems: alternatives to large‐scale fertilization experiments. Ecology, 95(3), pp.668-681.
Cleveland, C.C., Houlton, B.Z., Smith, W.K., Marklein, A.R., Reed, S.C., Parton, W., Del Grosso, S.J. and Running, S.W., 2013. Patterns of new versus recycled primary production in the terrestrial biosphere. Proceedings of the National Academy of Sciences, 110(31), pp.12733-12737.
Reed, S.C., Cleveland, C.C. and Townsend, A.R., 2013. Relationships among phosphorus, molybdenum and free-living nitrogen fixation in tropical rain forests: results from observational and experimental analyses. Biogeochemistry, 114(1-3), pp.135-147.
Wickings, K., Grandy, A.S., Reed, S.C. and Cleveland, C.C., 2012. The origin of litter chemical complexity during decomposition. Ecology Letters, 15(10), pp.1180-1188.
Reed, S.C., 2008. Scaling from molecules to ecosystems: controls over free-living nitrogen fixation in terrestrial ecosystems. ProQuest.
Sattin, S.R., Cleveland, C.C., Hood, E., Reed, S.C., King, A.J., Schmidt, S.K., Robeson, M.S., Ascarrunz, N. and Nemergut, D.R., 2009. Functional shifts in unvegetated, perhumid, recently-deglaciated soils do not correlate with shifts in soil bacterial community composition. The Journal of Microbiology, 47(6), pp.673-681.
Costello, E.K., Halloy, S.R., Reed, S.C., Sowell, P. and Schmidt, S.K., 2009. Fumarole-supported islands of biodiversity within a hyperarid, high-elevation landscape on Socompa Volcano, Puna de Atacama, Andes. Applied and Environmental Microbiology, 75(3), pp.735-747.
Freeman, K.R., Pescador, M.Y., Reed, S.C., Costello, E.K., Robeson, M.S. and Schmidt, S.K., 2009. Soil CO2 flux and photoautotrophic community composition in high‐elevation,‘barren’soil. Environmental Microbiology, 11(3), pp.674-686.
Schmidt, S.K., Reed, S.C., Nemergut, D.R., Grandy, A.S., Cleveland, C.C., Weintraub, M.N., Hill, A.W., Costello, E.K., Meyer, A.F., Neff, J.C. and Martin, A.M., 2008. The earliest stages of ecosystem succession in high-elevation (5000 metres above sea level), recently deglaciated soils. Proceedings of the Royal Society of London B: Biological Sciences, 275(1653), pp.2793-2802.
Reed, S.C., Cleveland, C.C. and Townsend, A.R., 2008. Tree species control rates of free-living nitrogen fixation in a tropical rain forest. Ecology, 89(10), pp.2924-2934.
Reed, S.C., Cleveland, C.C. and Townsend, A.R., 2007. Controls over leaf litter and soil nitrogen fixation in two lowland tropical rain forests. Biotropica, 39(5), pp.585-592.
Schmidt, S.K., Costello, E.K., Nemergut, D.R., Cleveland, C.C., Reed, S.C., Weintraub, M.N., Meyer, A.F. and Martin, A.M., 2007. Biogeochemical consequences of rapid microbial turnover and seasonal succession in soil. Ecology, 88(6), pp.1379-1385.
Reed, S.C., Seastedt, T.R., Mann, C.M., Suding, K.N., Townsend, A.R. and Cherwin, K.L., 2007. Phosphorus fertilization stimulates nitrogen fixation and increases inorganic nitrogen concentrations in a restored prairie. Applied Soil Ecology, 36(2), pp.238-242.
Cleveland, C.C., Reed, S.C. and Townsend, A.R., 2006. Nutrient regulation of organic matter decomposition in a tropical rain forest. Ecology, 87(2), pp.492-503.
Bowker, M.A., Reed, S.C., Belnap, J. and Phillips, S.L., 2002. Temporal variation in community composition, pigmentation, and Fv/Fm of desert cyanobacterial soil crusts. Microbial Ecology, 43(1), pp.13-25.
Reed, S.C., Capitosti, G.J., Zhu, Z. and Modarelli, D.A., 2001. Photochemical generation and matrix-isolation detection of dimethylvinylidene. The Journal of Organic Chemistry, 66(1), pp.287-299.
Reed, S.C. and Modarelli, D.A., 1996. Conformational effects on the excited state 1, 2-hydrogen migration in alkyldiazomethanes. Tetrahedron Letters, 37(40), pp.7209-7212.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 19
Filter Total Items: 188
Dryland soil recovery after disturbance across soil and climate gradients of the Colorado Plateau Dryland soil recovery after disturbance across soil and climate gradients of the Colorado Plateau
Drylands impacted by energy development often require costly reclamation activities to reconstruct damaged soils and vegetation, yet little is known about the effectiveness of reclamation practices in promoting recovery of soil quality due to a lack of long-term and cross-site studies. Here, we examined paired on-pad and adjacent undisturbed off-pad soil properties over a 22-year...
Authors
Kathryn Eckhoff, Sasha C. Reed, John B. Bradford, Nikita Daly, Keven Griffen, Robin Reibold, Randi Lupardus, Seth Munson, Aarin Sengsirirak, Miguel Villarreal, Michael Duniway
Hotspots of biogeochemical activity linked to aridity and plant traits across global drylands Hotspots of biogeochemical activity linked to aridity and plant traits across global drylands
Perennial plants create productive and biodiverse hotspots, known as fertile islands, beneath their canopies. These hotspots largely determine the structure and functioning of drylands worldwide. Despite their ubiquity, the factors controlling fertile islands under conditions of contrasting grazing by livestock, the most prevalent land use in drylands, remain virtually unknown. Here we...
Authors
David J. Eldridge, Jingyi Ding, Josh Dorrough, Manuel Delgado-Baquerizo, Osvaldo Sala, Nicolas Gross, Yoann Bagousse-Pinguet, Max Mallen-Cooper, Hugo Saiz, Sergio Asensio, Victoria Ochoa, Beatriz Gozalo, Emilio Guirado, Miguel García-Gómez, Enrique Valencia, Jaime Martinez-Valderrama, Cesar Plaza, Mehdi Abedi, Negar Ahmadian, Rodrigo Ahumada, Julio Alcantara, Fateh Amghar, Luisa Azevedo, Farah Salem, Miguel Berdugo, Niels Blaum, Bazartseren Boldgiv, Matthew A. Bowker, Donaldo Bran, Chongfeng Bu, Rafaella Canessa, Andrea Castillo-Monroy, Ignacio Castro, Patricio Castro-Quezada, Simone Cesarz, Roukaya Chibani, Abel Conceicao, Anthony Darrouzet-Nardi, Yvonne Davila, Balazs Deak, Paloma Diaz-Martinez, David Donoso, Andrew David Dougill, Jorge Duran, Nico Eisenhauer, Hamid Ejtehadi, Carlos Espinosa, Alex Fajardo, Mohammad Farzam, Ana Foronda, Jorgelina Franzese, Lauchlan Fraser, Juan Gaitan, Katja Geissler, Sofia Gonzalez, Elizabeth Gusman-Montalvan, Rosa Hernandez, Norbert Holzel, Frederic Hughes, Oswaldo Jadan, Anke Jentsch, Mengchen Ju, Kudzai Kaseke, Melanie Kobel, Anika Lehmann, Pierre Liancourt, Anja Linstadter, Michelle Louw, Quanhui Ma, Mancha Mabaso, Gillian Maggs-Kolling, Thulani Makhalanyane, Oumarou Issa, Eugene Marais, Mitchel P McClaran, Betty Mendoza, Vincent Mokoka, Juan Mora, Gerardo Moreno, Seth Munson, Alice Nunes, Gabriel Oliva, Gastón R. Oñatibia, Brooke B. Osborne, Guadalupe Peter, Margerie Pierre, Yolanda Pueyo, R. Emiliano Quiroga, Sasha C. Reed, Ana Rey, Pedro Rey, Victor Gomez, Víctor Rolo, Matthias C. Rillig, Peter le Roux, Jan Ruppert, Ayman Salah, Phokgedi Sebei, Anarmaa Sharkhuu, Ilan Stavi, Colton R. A. Stephens, Alberto Teixido, Andrew Thomas, Katja Tielborger, Silvia Robles, Samantha Travers, Orsolya Valko, Liesbeth van den Brink, Frederike Velbert, Andreas von Hessberg, Wanyoike Wamiti, Deli Wang, Lixin Wang, Glenda M. Wardle, Laura Yahdjian, Eli Zaady, Yuanming Zhang, Xiaobing Zhou, Fernando Maestre
Inoculated biocrust cover and functions diverged over a gradient of soil textures and water availability Inoculated biocrust cover and functions diverged over a gradient of soil textures and water availability
Restoring biological crust (biocrust) in disturbed drylands is challenging due to the difficult environmental conditions, such as limited soil moisture, low soil nutrients, and extreme temperatures, that impede growth. Understanding how the key components of biocrust—mosses, lichens, and cyanobacteria—react to different environmental factors informs the optimal timing, locations, and...
Authors
Kristina Young, Sasha C. Reed, Michael Morton, Matthew A. Bowker
A conserved interdomain microbial network underpins cadaver decomposition despite environmental variables A conserved interdomain microbial network underpins cadaver decomposition despite environmental variables
Microbial breakdown of organic matter is one of the most important processes on Earth, yet the controls of decomposition are poorly understood. Here we track 36 terrestrial human cadavers in three locations and show that a phylogenetically distinct, interdomain microbial network assembles during decomposition despite selection effects of location, climate and season. We generated a...
Authors
Zachary Burcham, Aeriel Belk, Bridget McGivern, Amina Bouslimani, Parsa Ghadermazi, Cameron Martino, Liat Shenhav, Anru Zhang, Pixu Shi, Alexandra Emmons, Heather Deel, Zhenjiang Xu, Victoria Nieciecki, Qiyun Zhu, Michael Shaffer, Morgan Panitchpakdi, Kelly Weldon, Kalen Cantrell, Asa Ben-Hur, Sasha C. Reed, Greg Humphry, Gail Ackermann, Daniel McDonald, Siu Chan, Melissa Connor, Derek Boyd, Jake Smith, Jenna Watson, Giovanna Vidoli, Dawnie Steadman, Aaron Lynne, Sibyl Bucheli, Pieter Dorrestein, Kelly Wrighton, David Carter, Rob Knight, Jessica Metcalf
Trajectories and tipping points of piñon–juniper woodlands after fire and thinning Trajectories and tipping points of piñon–juniper woodlands after fire and thinning
Piñon–juniper (PJ) woodlands are a dominant community type across the Intermountain West, comprising over a million acres and experiencing critical effects from increasing wildfire. Large PJ mortality and regeneration failure after catastrophic wildfire have elevated concerns about the long-term viability of PJ woodlands. Thinning is increasingly used to safeguard forests from fire and...
Authors
Michala Phillips, Cara Lauria, Tova Spector, John B. Bradford, Catherine Gehring, Brooke B. Osborne, Armin Howell, Edmund Grote, Renee Rondeau, Gillian Trimber, Benjamin Robinson, Sasha C. Reed
Tropical forests and global change: Biogeochemical responses and opportunities for cross-site comparisons, an organized INSPIRE session at the 108th Annual Meeting, Ecological Society of America, Portland, Oregon, USA, August 2023 Tropical forests and global change: Biogeochemical responses and opportunities for cross-site comparisons, an organized INSPIRE session at the 108th Annual Meeting, Ecological Society of America, Portland, Oregon, USA, August 2023
Tropical forests play a critical role in the global carbon (C) cycle. These ecosystems maintain the highest rates of net primary production (NPP) on Earth (Hengl et al., 2017), contain c. 30% of terrestrial C stocks (Jobbagy & Jackson, 2000), and have some of the largest stores of fine-root biomass globally (Jackson et al., 1996), as well as higher fine-root production and turnover rates...
Authors
Daniela Cusack, Sasha C. Reed, Kelly M. Andersen, Damla Cinoğlu, Matthew E. Craig, Lee Dietterich, J.A. Hogan, Jennifer Holmes, Andrew Nottingham, Rebecca Ostertag, Fiona Soper, Tana Wood, Michelle Y. Wong
Extreme drought impacts have been underestimated in grasslands and shrublands globally Extreme drought impacts have been underestimated in grasslands and shrublands globally
Drought has well-documented societal and economic consequences. Climate change is expected to intensify drought to even more extreme levels, but because such droughts have been historically rare, their impact on ecosystem functioning is not well known. We experimentally imposed the most frequent type of intensified drought—one that is ~1 y in duration—at 100 grassland and shrubland sites
Authors
Melinda Smith, Kate Wilkins, Martin Holdrege, Peter Wilfahrt, Scott Collins, Alan K. Knapp, Osvaldo Sala, Jeffrey S. Dukes, Richard Phillips, Laura Yahdjian, Laureano Gherardi, Timothy Ohlert, Claus Beier, Lauchlan Fraser, Anke Jentsch, Michael Loik, Fernando Maestre, Sally Power, Qiang Yu, Andrew Felton, Seth Munson, Yiqi Luo, Hamed Abdoli, Mehdi Abedi, Concepcion Alados, Juan Alberti, Moshe Alon, Hui An, Brian Anacker, Maggie Anderson, Harald Auge, Seton Bachle, Khadijeh Bahalkeh, Michael Bahn, Amgaa Batbaatar, Taryn Bauerle, Karen Beard, Kai Behn, Ilka Beil, Lucio Biancari, Irmgard Blindow, Viviana Bondaruk, Elizabeth Borer, Edward Bork, Carlos Bruschetti, Kerry Byrne, James F. Cahill Jr., Dianela Calvo, Michele Carbognani, Augusto Cardoni, Cameron Carlyle, Miguel Castillo-Garcia, Scott Chang, Jeff Chieppa, Marcus Cianciaruso, Ofer Cohen, Amanda Cordeiro, Daniela Cusack, Sven Dahlke, Pedro Daleo, Carla M. D'Antonio, Lee Dietterich, Tim Doherty, Maren Dubbert, Anne Ebling, Nico Eisenhauer, Felicia Fischer, T’ai Forte, Tobias Gebauer, Beatriz Gozalo, Aaron Greenville, Karlo Guidoni-Martins, Heather Hannusch, Siri Haugum, Yann Hautier, Mariet Hefting, Hugh Henry, Daniela Hoss, Johannes Ingrisch, Oscar Iribarne, Forest Isbell, Yari Johnson, Samuel E. Jordan, Eugene Kelly, Kaitlin Kimmel, Juergen Kreyling, Gyorgy Kroel-Dulay, Alicia Kropfl, Angelika Kubert, Andrew Kulmatiski, Eric Lamb, Klaus Larsen, Julie Larson, Jason Lawson, Cintia Leder, Anja Linstadter, Jielin Liu, Shirong Liu, Alexandra Lodge, Grisel Longo, Alejandro Loydi, Junwei Luan, Frederick Lubbe, Craig Macfarlane, Kathleen Mackie-Haas, Andrey Malyshev, Adrian Maturano-Ruiz, Thomas Merchant, Daniel B. Metcalfe, Akira Mori, Edwin Mudongo, Gregory Newman, Uffe Nielsen, Dale Nimmo, Yujie Niu, Paola Nobre, Rory O’Connor, Roma Ogaya, Gastón R. Oñatibia, Ildiko Orban, Brooke B. Osborne, Rafael Otfinowski, Meelis Pärtel, Josep Penuelas, Pablo L. Peri, Guadalupe Peter, Alessandro Petraglia, Catherine Picon-Cochard, Valerio Pillar, Juan Pineiro-Guerra, Laura Ploughe, Robert Plowes, Cristy Portales-Reyes, Suzanne Prober, Yolanda Pueyo, Sasha C. Reed, Euan Ritchie, Dana Rodriguez, William Rogers, Christiane Roscher, Ana M. Sánchez, Bráulio A. Santos, Maria Scarfo, Eric Seabloom, Baoku Shu, Lara Souza, Andreas Stampfli, Rachel Standish, Marcelo Sternberg, Wei Sun, Marie Sunnemann, Michelle Tedder, Pal Thorvaldsen, Dashuan Tian, Katja Tielborger, Alejandro Valdecantos, Liesbeth van den Brink, Vigdis Vandvik, Mathew Vankoughnett, Liv Velle, Changhui Wang, Yi Wang, Glenda M. Wardle, Christiane Werner, Cunzheng Wei, Georg Wiehl, Jennifer L. Williams, Amelia Wolf, Michaela Zeiter, Fawei Zhang, Juntao Zhu, Ning Zong, Xiaoan Zuo
Reply to comment on "Five decades of observed daily precipitation reveal longer and more variable drought events across much of the western United States" Reply to comment on "Five decades of observed daily precipitation reveal longer and more variable drought events across much of the western United States"
Paciorek and Wehner raise important questions around our use of the Mann-Kendall nonparametric trend test on smoothed data for analyzing long-term hydrometeorological trends in Zhang et al. (2021, https://doi.org/10.1029/2020gl092293). We thank them for initiating this important conversation and their gracious cooperation in exploring the issues addressed in their comment. In this reply...
Authors
Joel Biederman, Fangyue Zhang, Matthew Dannenberg, Dong Yan, Sasha C. Reed, William Smith
Respiratory acclimation of tropical forest roots in response to in situ experimental warming and hurricane disturbance Respiratory acclimation of tropical forest roots in response to in situ experimental warming and hurricane disturbance
Climate projections predict higher temperatures and more frequent hurricanes in the tropics. Tropical plants subjected to these stresses may respond by acclimating their physiology. We investigated tropical forest root respiration in response to in situ experimental warming and hurricane disturbance in eastern Puerto Rico. We measured mass-normalized root specific respiration, root...
Authors
Rob Tunison, Tana Wood, Sasha C. Reed, Molly Cavaleri
Cultivating resilience in dryland soils: An assisted migration approach to biological soil crust restoration Cultivating resilience in dryland soils: An assisted migration approach to biological soil crust restoration
Land use practices and climate change have driven substantial soil degradation across global drylands, impacting ecosystem functions and human livelihoods. Biological soil crusts, a common feature of dryland ecosystems, are under extensive exploration for their potential to restore the stability and fertility of degraded soils through the development of inoculants. However, stressful...
Authors
Sierra Jech, Natalie Day, Nichole Barger, Anita Antoninka, Matthew A. Bowker, Sasha C. Reed, Colin Tucker
Unraveling mechnisms underlying effects of wetting–drying cycles on soil respiration in a dryland Unraveling mechnisms underlying effects of wetting–drying cycles on soil respiration in a dryland
Rewetting of dry soils usually stimulates soil carbon (C) emission, a phenomenon known as the Birch effect. Soil C cycling in drylands, which store approximately one third of terrestrial soil organic C (SOC), is strongly affected by wetting–drying cycles. However, the physical, chemical, and biological mechanisms that link rewetting cycles with dryland soil C cycling have not been...
Authors
Guopeng Liang, Sasha C. Reed, John M. Stark, Bonnie Waring
Time, climate, and soil settings set the course for reclamation outcomes following dryland energy development Time, climate, and soil settings set the course for reclamation outcomes following dryland energy development
Soil attributes, climate, and time since reclamation have important implications for oil and gas reclamation success on drylands. It is uncertain if reclaimed well pads, on highly degraded drylands, can successfully regain ecological function or meet indicator benchmarks for reclamation. Here, our goals were to assess patterns in reclamation outcomes relative to (1) soil attributes...
Authors
Randi Lupardus, Aarin Sengsirirak, Keven Griffen, Anna Knight, Brandon McNellis, John B. Bradford, Seth Munson, Sasha C. Reed, Miguel Villarreal, Michael Duniway
Non-USGS Publications**
Sullivan, B.W., Alvarez-Clare, S., Castle, S.C., Porder, S., Reed, S.C., Schreeg, L., Townsend, A.R. and Cleveland, C.C., 2014. Assessing nutrient limitation in complex forested ecosystems: alternatives to large‐scale fertilization experiments. Ecology, 95(3), pp.668-681.
Cleveland, C.C., Houlton, B.Z., Smith, W.K., Marklein, A.R., Reed, S.C., Parton, W., Del Grosso, S.J. and Running, S.W., 2013. Patterns of new versus recycled primary production in the terrestrial biosphere. Proceedings of the National Academy of Sciences, 110(31), pp.12733-12737.
Reed, S.C., Cleveland, C.C. and Townsend, A.R., 2013. Relationships among phosphorus, molybdenum and free-living nitrogen fixation in tropical rain forests: results from observational and experimental analyses. Biogeochemistry, 114(1-3), pp.135-147.
Wickings, K., Grandy, A.S., Reed, S.C. and Cleveland, C.C., 2012. The origin of litter chemical complexity during decomposition. Ecology Letters, 15(10), pp.1180-1188.
Reed, S.C., 2008. Scaling from molecules to ecosystems: controls over free-living nitrogen fixation in terrestrial ecosystems. ProQuest.
Sattin, S.R., Cleveland, C.C., Hood, E., Reed, S.C., King, A.J., Schmidt, S.K., Robeson, M.S., Ascarrunz, N. and Nemergut, D.R., 2009. Functional shifts in unvegetated, perhumid, recently-deglaciated soils do not correlate with shifts in soil bacterial community composition. The Journal of Microbiology, 47(6), pp.673-681.
Costello, E.K., Halloy, S.R., Reed, S.C., Sowell, P. and Schmidt, S.K., 2009. Fumarole-supported islands of biodiversity within a hyperarid, high-elevation landscape on Socompa Volcano, Puna de Atacama, Andes. Applied and Environmental Microbiology, 75(3), pp.735-747.
Freeman, K.R., Pescador, M.Y., Reed, S.C., Costello, E.K., Robeson, M.S. and Schmidt, S.K., 2009. Soil CO2 flux and photoautotrophic community composition in high‐elevation,‘barren’soil. Environmental Microbiology, 11(3), pp.674-686.
Schmidt, S.K., Reed, S.C., Nemergut, D.R., Grandy, A.S., Cleveland, C.C., Weintraub, M.N., Hill, A.W., Costello, E.K., Meyer, A.F., Neff, J.C. and Martin, A.M., 2008. The earliest stages of ecosystem succession in high-elevation (5000 metres above sea level), recently deglaciated soils. Proceedings of the Royal Society of London B: Biological Sciences, 275(1653), pp.2793-2802.
Reed, S.C., Cleveland, C.C. and Townsend, A.R., 2008. Tree species control rates of free-living nitrogen fixation in a tropical rain forest. Ecology, 89(10), pp.2924-2934.
Reed, S.C., Cleveland, C.C. and Townsend, A.R., 2007. Controls over leaf litter and soil nitrogen fixation in two lowland tropical rain forests. Biotropica, 39(5), pp.585-592.
Schmidt, S.K., Costello, E.K., Nemergut, D.R., Cleveland, C.C., Reed, S.C., Weintraub, M.N., Meyer, A.F. and Martin, A.M., 2007. Biogeochemical consequences of rapid microbial turnover and seasonal succession in soil. Ecology, 88(6), pp.1379-1385.
Reed, S.C., Seastedt, T.R., Mann, C.M., Suding, K.N., Townsend, A.R. and Cherwin, K.L., 2007. Phosphorus fertilization stimulates nitrogen fixation and increases inorganic nitrogen concentrations in a restored prairie. Applied Soil Ecology, 36(2), pp.238-242.
Cleveland, C.C., Reed, S.C. and Townsend, A.R., 2006. Nutrient regulation of organic matter decomposition in a tropical rain forest. Ecology, 87(2), pp.492-503.
Bowker, M.A., Reed, S.C., Belnap, J. and Phillips, S.L., 2002. Temporal variation in community composition, pigmentation, and Fv/Fm of desert cyanobacterial soil crusts. Microbial Ecology, 43(1), pp.13-25.
Reed, S.C., Capitosti, G.J., Zhu, Z. and Modarelli, D.A., 2001. Photochemical generation and matrix-isolation detection of dimethylvinylidene. The Journal of Organic Chemistry, 66(1), pp.287-299.
Reed, S.C. and Modarelli, D.A., 1996. Conformational effects on the excited state 1, 2-hydrogen migration in alkyldiazomethanes. Tetrahedron Letters, 37(40), pp.7209-7212.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.