I am an ecosystem ecologist interested in
•  Effects of CO₂ enrichment on tree growth and forest metabolism
•  Ecosystem responses to atmospheric and climatic change
•  Carbon and nitrogen cycling in diverse ecosystems
•  Forest tree physiology and plant physiological ecology
•  Synthesis of experimental results to inform models

New publications:

Norby RJ. 2025. Forest productivity response to elevated CO₂ in free-air CO₂ enrichment experiments: the 23 percent solution, revisited. New Phytologist DOI: 10.1111/nph.70162. PDF

Norby RJ, Loader NJ, Mayoral C, Ullah S, Curioni G, Smith AR, Reay MK, van Wijngaarden K, Amjad MS, Brettle D, Crockatt ME, Denny G, Grzesik RT, Hamilton RL, Hart KM, Hartley IP, Jones AG, Kourmouli A, Larsen JR, Shi Z, Thomas RM, MacKenzie AR. 2024. Enhanced woody biomass production in a mature temperate forest under elevated CO₂. Nature Climate Change 14: 983–988. 10.1038/s41558-024-02090-3

Norby RJ, MacKenzie AR. 2024. Mature oak forests retain the capacity of young forests to respond to elevated CO₂. Nature Climate Change DOI: 10.1038/s41558-024-02100-4

Norby RJ. Warren JM, Iversen CM, Walker AP,Childs J. 2024. Getting allometry right at the Oak Ridge free-air CO₂ enrichment experiment: Old problems and new opportunities for global change experiments. Plants, People, Planet 6: 1151-1572. 10.1002/ppp3.10565

Norby RJ, Baxter T, Živković T, Weston DJ. 2023 Shading contributes to Sphagnum decline in response to warming. Ecology and Evolution 13:e10542. 10.1002/ece3.10542.

Moutinho S. 2022. Testing the resilience of the Amazon. Eos, 103. Published on 10 November 2022.

Norby RJ, Warren JM, Iversen CM, Childs J, Jawdy SS, Walker AP. 2022. Forest stand and canopy development unaltered by 12 years of CO₂ enrichment. Tree Physiology 42: 428-440. 10.1093/treephys/tpab107.

Recent projects include:

BIFoR FACE experiment (link)

Norby RJ, Loader NJ, Mayoral C, Ullah S, Curioni G, Smith AR, Reay MK, van Wijngaarden K, Amjad MS, Brettle D, Crockatt ME, Denny G, Grzesik RT, Hamilton RL, Hart KM, Hartley IP, Jones AG, Kourmouli A, Larsen JR, Shi Z, Thomas RM, MacKenzie AR. 2024. Enhanced woody biomass production in a mature temperate forest under elevated CO₂. Nature Climate Change 14: 983–988. 10.1038/s41558-024-02090-3

Free Air CO₂ Enrichment (FACE) experiment (link)

FACE Model-Data Synthesis (link)

Walker AP, De Kauwe MG, Medlyn BE, Zaehle S, Iversen CM, Asao S, Guenet B, Harper A, Hickler T, Hungate BA, Jain AK, Luo Y, Lu X, Lu M, Luus K, Megonigal JP, Oren R, Ryan E, Shu S, Talhelm A, Wang Y-P, Warren JM, Werner C, Xia J, Yang B, Zak DR, Norby RJ. 2019. Decadal biomass increment in early secondary succession woody ecosystems is increased by CO₂ enrichment. Nature Communications 10: 454. 10.1038/s41467-019-08348-1

AmazonFACE Experiment (link)

Cordeiro AL, Norby RJ, Andersen KM, Valverde-Barrantes O, Fuchslueger L, Oblitas E, Hartley IP, Iversen CM, Goncalves NB, Takeshi B, Lapola DM, Quesada CA.2020. Fine-root dynamics vary with soil depth and precipitation in a low nutrient tropical forest in the Central Amazonia. Plant-Environment Interactions 1:3-16. 10.1002/pei3.10010

Root-Soil interface in Puerto Rico, part of NGEE-Tropics (link)

Cabugao KG, Yaffar D, Stenson N, Childs J, Phillips J, Mayes MA, Yang X, Weston DJ, Norby RJ. 2021. Bringing function to structure: Root-soil interactions shaping phosphatase activity throughout a soil profile in Puerto Rico. Ecology and Evolution 11: 1150-1164, 10.1002/ece3.7036

Yaffar D, Norby RJ. A historical and comparative review of 50 years of root data collection in Puerto Rico. Biotropica 52: 563-576. 10.1111/btp.12771

Sphagnum research at SPRUCE experiment (link)

Norby RJ, Childs J, Hanson PJ, Warren JM. 2019. Rapid loss of an ecosystem engineer: Sphagnum decline in an experimentally warmed bog. Ecology and Evolution 9:12571-12585. 10.1002/ece3.5722.