The biological basis for using optical signals to track evergreen needleleaf photosynthesis

Author:

Pierrat Zoe Amie12ORCID,Magney Troy S3ORCID,Cheng Rui4ORCID,Maguire Andrew J25ORCID,Wong Christopher Y S3ORCID,Nehemy Magali F6ORCID,Rao Mukund378ORCID,Nelson Sara E9,Williams Anneka F9,Grosvenor Jeremy A Hoyne9,Smith Kenneth R10,Reblin Jaret S11ORCID,Stutz Jochen1ORCID,Richardson Andrew D12ORCID,Logan Barry A9ORCID,Bowling David R10ORCID

Affiliation:

1. Department of Atmospheric and Oceanic Sciences, University of California Los Angeles , Los Angeles, California, United States

2. Jet Propulsion Laboratory, California Institute of Technology , Pasadena, California, United States

3. Department of Plant Sciences, University of California Davis , Davis, California, United States

4. Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts, United States

5. Conservation Science Partners, Inc. , Truckee, California, United States

6. Trent School of the Environment, Trent University , Peterborough, Ontario, Canada

7. Centre de Recerca Ecològica i Aplicacions Forestals , Bellatera (Barcelona), Spain

8. Lamont-Doherty Earth Observatory of Columbia University , Palisades, New York, United States

9. Department of Biology at Bowdoin College , Brunswick, Maine, United States

10. School of Biological Sciences, University of Utah , Salt Lake City, Utah, United States

11. Schiller Coastal Studies Center, Bowdoin College , Brunswick, Maine, United States

12. Center for Ecosystem Science and Society and with the School of Informatics, Computing, and Cyber Systems at Northern Arizona University , Flagstaff, Arizona, United States

Abstract

Abstract Evergreen needleleaf forests (ENFs) play a sizable role in the global carbon cycle, but the biological and physical controls on ENF carbon cycle feedback loops are poorly understood and difficult to measure. To address this challenge, a growing appreciation for the stress physiology of photosynthesis has inspired emerging techniques designed to detect ENF photosynthetic activity with optical signals. This Overview summarizes how fundamental plant biological and biophysical processes control the fate of photons from leaf to globe, ultimately enabling remote estimates of ENF photosynthesis. We demonstrate this using data across four ENF sites spanning a broad range of environmental conditions and link leaf- and stand-scale observations of photosynthesis (i.e., needle biochemistry and flux towers) with tower- and satellite-based remote sensing. The multidisciplinary nature of this work can serve as a model for the coordination and integration of observations made at multiple scales.

Funder

National Science Foundation

National Aeronautics and Space Administration

Jet Propulsion Laboratory

California Institute of Technology

Publisher

Oxford University Press (OUP)

Subject

General Agricultural and Biological Sciences

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