Hydrometeorological sensitivities of net ecosystem carbon dioxide and methane exchange of an Amazonian palm swamp peatland
Abstract
Here, we report ecosystem-scale CO2 and CH4 flux observations for an Amazonian palm swamp peatland over a two-year period in relation to hydrometeorological forcings. Seasonal and short-term variations in hydrometeorological forcing had a strong effect on carbon dioxide and methane fluxes. High air temperature and vapor pressure deficit exerted an important limitation on photosynthesis during the dry season, while latent heat flux appeared to be insensitive to these climate drivers. Evidence from light-response analyses and flux partitioning support that photosynthetic activity was downregulated during dry conditions, while ecosystem respiration was either inhibited or enhanced depending on water table position. The cumulative net ecosystem carbon dioxide exchange indicated that the peatland was a significant carbon dioxide sink ranging from –465 (–279 to –651) g C m-2 y-1 in 2018 to –462 (–277 to –647) g C m-2 y-1 in 2019. The forest was a methane source of 22 (20 to 24) g C m-2 y-1, similar in magnitude to other tropical peatlands and larger than boreal and arctic peatlands. Furthermore, the annual carbon budget of this Amazonian palm swamp peatland appears to be a major carbon sink under current hydrometeorological conditions, but evidence indicates that the sink strength is vulnerable tomore »
- Authors:
-
[1];
[3];
[4];
[5];
[6];
[7];
[8];
[9];
[10];
- University of Minnesota, Saint Paul, MN (United States)
- USDA Forest Service – Northern Research Station Grand Rapids, MN (United States)
- University of Missouri, Columbia, MO (United States)
- University of Minnesota, Saint Paul, MN (United States); University of Goettingen (Germany)
- Instituto de Investigaciones de la Amazonia Peruana, Iquitos (Peru)
- USDA Forest Service, Houghton, MI (United States)
- Michigan Technological University, Houghton, MI (United States)
- USDA Forest Service, Washington, DC (United States)
- Center for International Forest Research, Situgede (Indonesia)
- USDA-ARS and University of Minnesota, Saint Paul, MN (United States)
- Arizona State University, Tempe, AZ (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Univ. of Minnesota, Minneapolis, MN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1663238
- Alternate Identifier(s):
- OSTI ID: 1776489; OSTI ID: 1818676
- Grant/Contract Number:
- SC0020167; AC05‐00OR22725; AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Agricultural and Forest Meteorology
- Additional Journal Information:
- Journal Volume: 295; Journal ID: ISSN 0168-1923
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; Amazon; peatland; carbon dioxide; methane; eddy covariance; climate change
Citation Formats
Griffis, Tim J., Roman, D. T., Wood, J. D., Deventer, J., Fachin, L., Rengifo, J., Del Castillo, D., Lilleskov, E., Kolka, R., Chimner, R. A., del Aguila-Pasquel, J., Wayson, C., Hergoualc'h, K., Baker, J. M., Cadillo-Quiroz, H., and Ricciuto, D. M. Hydrometeorological sensitivities of net ecosystem carbon dioxide and methane exchange of an Amazonian palm swamp peatland. United States: N. p., 2020.
Web. doi:10.1016/j.agrformet.2020.108167.
Griffis, Tim J., Roman, D. T., Wood, J. D., Deventer, J., Fachin, L., Rengifo, J., Del Castillo, D., Lilleskov, E., Kolka, R., Chimner, R. A., del Aguila-Pasquel, J., Wayson, C., Hergoualc'h, K., Baker, J. M., Cadillo-Quiroz, H., & Ricciuto, D. M. Hydrometeorological sensitivities of net ecosystem carbon dioxide and methane exchange of an Amazonian palm swamp peatland. United States. https://doi.org/10.1016/j.agrformet.2020.108167
Griffis, Tim J., Roman, D. T., Wood, J. D., Deventer, J., Fachin, L., Rengifo, J., Del Castillo, D., Lilleskov, E., Kolka, R., Chimner, R. A., del Aguila-Pasquel, J., Wayson, C., Hergoualc'h, K., Baker, J. M., Cadillo-Quiroz, H., and Ricciuto, D. M. Fri .
"Hydrometeorological sensitivities of net ecosystem carbon dioxide and methane exchange of an Amazonian palm swamp peatland". United States. https://doi.org/10.1016/j.agrformet.2020.108167. https://www.osti.gov/servlets/purl/1663238.
@article{osti_1663238,
title = {Hydrometeorological sensitivities of net ecosystem carbon dioxide and methane exchange of an Amazonian palm swamp peatland},
author = {Griffis, Tim J. and Roman, D. T. and Wood, J. D. and Deventer, J. and Fachin, L. and Rengifo, J. and Del Castillo, D. and Lilleskov, E. and Kolka, R. and Chimner, R. A. and del Aguila-Pasquel, J. and Wayson, C. and Hergoualc'h, K. and Baker, J. M. and Cadillo-Quiroz, H. and Ricciuto, D. M.},
abstractNote = {Here, we report ecosystem-scale CO2 and CH4 flux observations for an Amazonian palm swamp peatland over a two-year period in relation to hydrometeorological forcings. Seasonal and short-term variations in hydrometeorological forcing had a strong effect on carbon dioxide and methane fluxes. High air temperature and vapor pressure deficit exerted an important limitation on photosynthesis during the dry season, while latent heat flux appeared to be insensitive to these climate drivers. Evidence from light-response analyses and flux partitioning support that photosynthetic activity was downregulated during dry conditions, while ecosystem respiration was either inhibited or enhanced depending on water table position. The cumulative net ecosystem carbon dioxide exchange indicated that the peatland was a significant carbon dioxide sink ranging from –465 (–279 to –651) g C m-2 y-1 in 2018 to –462 (–277 to –647) g C m-2 y-1 in 2019. The forest was a methane source of 22 (20 to 24) g C m-2 y-1, similar in magnitude to other tropical peatlands and larger than boreal and arctic peatlands. Furthermore, the annual carbon budget of this Amazonian palm swamp peatland appears to be a major carbon sink under current hydrometeorological conditions, but evidence indicates that the sink strength is vulnerable to future climate change.},
doi = {10.1016/j.agrformet.2020.108167},
journal = {Agricultural and Forest Meteorology},
number = ,
volume = 295,
place = {United States},
year = {Fri Sep 11 00:00:00 EDT 2020},
month = {Fri Sep 11 00:00:00 EDT 2020}
}
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