Robert W. Heckman, PhD

Research Botanist

Rocky Mountain Research Station

robert.heckman@usda.gov

Publications & Products
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Education

Treesearch Publications

Robert W. Heckman, Grace P. John, Jason E. Bonnette, Brandon E. Campitelli, Felix B. Fritschi, David B. Lowry, Philip A. Fay, Thomas E. Juenger. 2026. Correlational selection and genetic architecture shape the evolution of the leaf economics spectrum in a perennial grass
Philip A. Fay, Anita C. Risch, Michael J. Aspinwall, Robert W. Heckman, Albina R. Khasanova, Lara G. Reichmann. 2026. Dominant species drive biomass and diversity responses to nutrient inputs
Jeanne C. Chambers, Jessi L. Brown, Sofia Koutzoukis, Richard F. Miller, Sarah C. Barga, Rhett Boswell, Robert W. Heckman, Mark Madsen, Matt C. Reeves, Vaughn Thacker, Stephanie Yelenik. 2025. Major changes in climate, vegetation, and ecological resilience in recent decades suggest climate smart management strategies for western US dryland shrublands and woodlands
Philip A. Fay, Laureano A. Gherardi, Laura Yahdjian, Peter B. Adler, Jonathan D. Bakker, Siddharth Bharath, Elizabeth T. Borer, W. Stanley Harpole, Erika Hersch-Green, Travis E. Huxman, Andrew S. MacDougall, Anita C. Risch, Eric W. Seabloom, Sumanta Bagchi, Isabel C. Barrio, Lori Biederman, Yvonne M. Buckley, Miguel N. Bugalho, Maria C. Caldeira, Jane A. Catford, QingQing Chen, Elsa E. Cleland, Scott L. Collins, Pedro Daleo, Christopher R. Dickman, Ian Donohue, Mary E. DuPre, Nico Eisenhauer, Anu Eskelinen, Nicole Hagenah, Yann Hautier, Robert W. Heckman, Ingibjorg S. Jonsdottir, Johannes M. H. Knops, Ramesh Laungani, Jason P. Martina, Rebecca L. McCulley, John W. Morgan, Harry Olde Venterink, Pablo L. Peri, Sally A. Power, Xavier Raynaud, Zhengwei Ren, Christiane Roscher, Melinda D. Smith, Marie Spohn, Carly J. Stevens, Michelle J. Tedder, Risto Virtanen, Glenda M. Wardley, George R. Wheeler. 2025. Interactions among nutrients govern the global grassland biomass-precipitation relationship
Robert W. Heckman, Michael J. Aspinwall, Samuel H. Taylor, David B. Lowry, Albina Khasanova, Jason E. Bonnette, Samsad Razzaque, Philip A. Fay, Thomas E. Juenger. 2025. Changes in leaf economic trait relationships across a precipitation gradient are related to differential gene expression in a C4 perennial grass
Rita L. Grunberg, Fletcher W. Halliday, Kayleigh R. O’Keeffe, Brooklynn N. Joyner, Robert W. Heckman, Charles E. Mitchell. 2025. Disease epidemics and species interactions: A manipulation of seasonal establishment of fungal diseases in an old field
Robert W. Heckman, Caio Guilherme Pereira, Michael J. Aspinwall, Thomas E. Juenger. 2024. Physiological responses of C4 perennial bioenergy grasses to climate change: Causes, consequences, and constraints
P. Camilla Durant, Amit Bhasin, Thomas E. Juenger, Robert W. Heckman. 2024. Genetically correlated leaf tensile and morphological traits are driven by growing season length in a widespread perennial grass
Kevin C. Headrick, Thomas E. Juenger, Robert W. Heckman. 2024. Plant physical defenses contribute to a latitudinal gradient in resistance to insect herbivory within a widespread perennial grass
Peter A. Wilfahrt, Eric W. Seabloom, Jonathan D. Bakker, Lori Biederman, Miguel N. Bugalho, Marc W. Cadotte, Maria C. Caldeira, Jane A. Catford, Qingqing Chen, Ian Donohue, Anne Ebeling, Nico Eisenhauer, Sylvia Haider, Robert W. Heckman, Anke Jentsch, Sally E. Koerner, Kimberly J. Komatsu, Ramesh Laungani, Andrew MacDougall, Jason P. Martina, Holly Martinson, Joslin L. Moore, Yujie Niu, Timothy Ohlert, Harry Olde Venterink, Devyn Orr, Pablo Peri, Edwin Pos, Jodi Price, Xavier Raynaud, Zhengwei Ren, Christiane Roscher, Nicholas G. Smith, Carly J. Stevens, Lauren L. Sullivan, Michelle Tedder, Pedro M. Tognetti, Ciska Veen, George Wheeler, Alyssa L. Young, Hillary Young, Elizabeth T. Borer. 2023. Nothing lasts forever: Dominant species decline under rapid environmental change in global grasslands
Rita L. Grunberg, Fletcher W. Halliday, Robert W. Heckman, Brooklynn N. Joyner, Kayleigh R. O’Keeffe, Charles E. Mitchell. 2023. Disease decreases variation in host community structure in an old-field grassland
Robert W. Heckman. 2023. Consumers and nutrients alter colonization of an old field community independently and by distinct mechanisms
Samsad Razzaque, Robert W. Heckman, Thomas E. Juenger. 2023. Seed size variation impacts local adaptation and life-history strategies in a perennial grass
Michael P. Ricketts, Robert W. Heckman, Philip A. Fay, Roser Matamala, Julie D. Jastrow, Felix B. Fritschi, Jason Bonnette, Thomas E. Juenger. 2023. Local adaptation of switchgrass drives trait relations to yield and differential responses to climate and soil environments
Robert W. Heckman, Austin Rueda, Jason E. Bonnette, Michael J. Aspinwall, Albina Khasanova, Christine V Hawkes, Thomas E. Juenger, Philip A. Fay. 2023. Legacies of precipitation influence primary production in Panicum virgatum
Joseph D. Napier, Robert W. Heckman, Thomas E. Juenger. 2023. Gene-by-environment interactions in plants: Molecular mechanisms, environmental drivers, and adaptive plasticity