Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest
Abstract
Satellite and tower-based metrics of forest-scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. We conducted demographic surveys of leaf age composition, and measured age-dependence of leaf physiology in broadleaf canopy trees of abundant species at a central eastern Amazon site. Using a novel leaf-to-branch scaling approach, we used this data to independently test the much-debated hypothesis—arising from satellite and tower-based observations—that leaf phenology could explain the forest-scale pattern of dry season photosynthesis. Stomatal conductance and biochemical parameters of photosynthesis were higher for recently mature leaves than for old leaves. Most branches had multiple leaf age categories simultaneously present, and the number of recently mature leaves increased as the dry season progressed because old leaves were exchanged for new leaves. These findings provide the first direct field evidence that branch-scale photosynthetic capacity increases during the dry season, with a magnitude consistent with increases in ecosystem-scale photosynthetic capacity derived from flux towers. In conclusion, interaction between leaf age-dependent physiology and shifting leaf age-demographic composition are sufficient to explain the dry season photosynthetic capacity pattern at this site, and should be considered in vegetation models of tropical evergreen forests.
- Authors:
-
[1];
[8];
- Univ. of Arizona, Tucson, AZ (United States). Dept. of Ecology and Evolutionary Biology; Brown Univ., Providence, RI (United States). Inst. at Brown for Environment and Society
- Univ. of Arizona, Tucson, AZ (United States). Dept. of Ecology and Evolutionary Biology; Brookhaven National Lab. (BNL), Upton, NY (United States). Environmental and Climate Sciences Dept.
- Univ. of Arizona, Tucson, AZ (United States). Dept. of Ecology and Evolutionary Biology
- Univ. of Sao Paulo (Brazil). Center for Nuclear Energy in Agriculture (CENA)
- Univ. of California, Irvine, CA (United States). Ecology and Evolutionary Biology and Center for Environmental Biology
- Federal Univ. of Western Para, Santarem (Brazil). Inst. for Biodiversity and Forest (UFOPA)
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Civil and Environmental Engineering
- Univ. of Campinas (UNICAMP), Sao Paulo (Brazil). Dept. of Plant Biology
- National Inst. of Amazonian Research (INPA), Manaus (Brazil). Tropical Forest Sciences
- Univ. of Arizona, Tucson, AZ (United States). Dept. of Ecology and Evolutionary Biology; Michigan State Univ., East Lansing, MI (United States). Dept. of Forestry
- Brazilian Agricultural Research Corp. (EMBRAPA), Herbarium of Embrapa Amazônia Oriental (IAN), Santarem (Brazil)
- Univ. of Technology, Sydney (Australia). Plant Functional Biology and Climate Change Cluster
- Federal Univ. of Western Para, Santarem (Brazil). Inst. for Biodiversity and Forest (UFOPA). Atmospheric Sciences Dept. and Inst. of Engineering and Geosciences
- Michigan State Univ., East Lansing, MI (United States). Dept. of Forestry
- Federal Univ. of Western Para, Santarem (Brazil). Inst. for Biodiversity and Forest (UFOPA). Society, Nature and Development Dept.
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); Univ. of Arizona, Tucson, AZ (United States); Brazilian Agricultural Research Corp. (EMBRAPA); Large Scale Biosphere-Atmosphere Program in the Amazon (LBA); Herbarium of Embrapa Amazônia Oriental (IAN)
- OSTI Identifier:
- 1424982
- Alternate Identifier(s):
- OSTI ID: 1423698
- Report Number(s):
- BNL-203201-2018-JAAM
Journal ID: ISSN 0028-646X
- Grant/Contract Number:
- SC0012704; OISE-0730305; SC0008383
- Resource Type:
- Accepted Manuscript
- Journal Name:
- New Phytologist
- Additional Journal Information:
- Journal Volume: 218; Journal Issue: 1; Journal ID: ISSN 0028-646X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Albert, Loren P., Wu, Jin, Prohaska, Neill, de Camargo, Plinio Barbosa, Huxman, Travis E., Tribuzy, Edgard S., Ivanov, Valeriy Y., Oliveira, Rafael S., Garcia, Sabrina, Smith, Marielle N., Oliveira Junior, Raimundo Cosme, Restrepo-Coupe, Natalia, da Silva, Rodrigo, Stark, Scott C., Martins, Giordane A., Penha, Deliane V., and Saleska, Scott R. Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest. United States: N. p., 2018.
Web. doi:10.1111/nph.15056.
Albert, Loren P., Wu, Jin, Prohaska, Neill, de Camargo, Plinio Barbosa, Huxman, Travis E., Tribuzy, Edgard S., Ivanov, Valeriy Y., Oliveira, Rafael S., Garcia, Sabrina, Smith, Marielle N., Oliveira Junior, Raimundo Cosme, Restrepo-Coupe, Natalia, da Silva, Rodrigo, Stark, Scott C., Martins, Giordane A., Penha, Deliane V., & Saleska, Scott R. Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest. United States. https://doi.org/10.1111/nph.15056
Albert, Loren P., Wu, Jin, Prohaska, Neill, de Camargo, Plinio Barbosa, Huxman, Travis E., Tribuzy, Edgard S., Ivanov, Valeriy Y., Oliveira, Rafael S., Garcia, Sabrina, Smith, Marielle N., Oliveira Junior, Raimundo Cosme, Restrepo-Coupe, Natalia, da Silva, Rodrigo, Stark, Scott C., Martins, Giordane A., Penha, Deliane V., and Saleska, Scott R. Sun .
"Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest". United States. https://doi.org/10.1111/nph.15056. https://www.osti.gov/servlets/purl/1424982.
@article{osti_1424982,
title = {Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest},
author = {Albert, Loren P. and Wu, Jin and Prohaska, Neill and de Camargo, Plinio Barbosa and Huxman, Travis E. and Tribuzy, Edgard S. and Ivanov, Valeriy Y. and Oliveira, Rafael S. and Garcia, Sabrina and Smith, Marielle N. and Oliveira Junior, Raimundo Cosme and Restrepo-Coupe, Natalia and da Silva, Rodrigo and Stark, Scott C. and Martins, Giordane A. and Penha, Deliane V. and Saleska, Scott R.},
abstractNote = {Satellite and tower-based metrics of forest-scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. We conducted demographic surveys of leaf age composition, and measured age-dependence of leaf physiology in broadleaf canopy trees of abundant species at a central eastern Amazon site. Using a novel leaf-to-branch scaling approach, we used this data to independently test the much-debated hypothesis—arising from satellite and tower-based observations—that leaf phenology could explain the forest-scale pattern of dry season photosynthesis. Stomatal conductance and biochemical parameters of photosynthesis were higher for recently mature leaves than for old leaves. Most branches had multiple leaf age categories simultaneously present, and the number of recently mature leaves increased as the dry season progressed because old leaves were exchanged for new leaves. These findings provide the first direct field evidence that branch-scale photosynthetic capacity increases during the dry season, with a magnitude consistent with increases in ecosystem-scale photosynthetic capacity derived from flux towers. In conclusion, interaction between leaf age-dependent physiology and shifting leaf age-demographic composition are sufficient to explain the dry season photosynthetic capacity pattern at this site, and should be considered in vegetation models of tropical evergreen forests.},
doi = {10.1111/nph.15056},
journal = {New Phytologist},
number = 1,
volume = 218,
place = {United States},
year = {Sun Mar 04 00:00:00 EST 2018},
month = {Sun Mar 04 00:00:00 EST 2018}
}
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Data from: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest
dataset, March 2018
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- Dryad Digital Repository-Supplementary information for journal article at DOI: 10.1111/nph.15056, 7 files
Data from: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest
dataset, March 2018
- Albert, Loren P.; Wu, Jin; Prohaska, Neill
- Dryad Digital Repository-Supplementary information for journal article at DOI: 10.1111/nph.15056, 7 files
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Cryptic phenology in plants: Case studies, implications, and recommendations
journal, August 2019
- Albert, Loren P.; Restrepo‐Coupe, Natalia; Smith, Marielle N.
- Global Change Biology, Vol. 25, Issue 11
Leaf reflectance spectroscopy captures variation in carboxylation capacity across species, canopy environment and leaf age in lowland moist tropical forests
journal, June 2019
- Wu, Jin; Rogers, Alistair; Albert, Loren P.
- New Phytologist, Vol. 224, Issue 2
Seasonal and drought‐related changes in leaf area profiles depend on height and light environment in an Amazon forest
journal, February 2019
- Smith, Marielle N.; Stark, Scott C.; Taylor, Tyeen C.
- New Phytologist, Vol. 222, Issue 3
Data from: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest
dataset, March 2018
- Albert, Loren P.; Wu, Jin; Prohaska, Neill
- Dryad Digital Repository-Supplementary information for journal article at DOI: 10.1111/nph.15056, 7 files
Data from: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest
dataset, March 2018
- Albert, Loren P.; Wu, Jin; Prohaska, Neill
- Dryad Digital Repository-Supplementary information for journal article at DOI: 10.1111/nph.15056, 7 files
Drought effects on leaf fall, leaf flushing and stem growth in the Amazon forest: reconciling remote sensing data and field observations
journal, July 2021
- Janssen, Thomas; van der Velde, Ype; Hofhansl, Florian
- Biogeosciences, Vol. 18, Issue 14