Drought drives rapid shifts in tropical rainforest soil biogeochemistry and greenhouse gas emissions
Abstract
Climate change models predict more frequent and severe droughts in the humid tropics. How drought will impact tropical forest carbon and greenhouse gas dynamics is poorly understood. Here we report the effects of the severe 2015 Caribbean drought on soil moisture, oxygen, phosphorus (P), and greenhouse gas emissions in a humid tropical forest in Puerto Rico. Drought significantly decreases inorganic P concentrations, an element commonly limiting to net primary productivity in tropical forests, and significantly increases organic P. High-frequency greenhouse gas measurements show varied impacts across topography. Soil carbon dioxide emissions increase by 60% on slopes and 163% in valleys. Methane (CH4) consumption increases significantly during drought, but high CH4 fluxes post-drought offset this sink after 7 weeks. The rapid response and slow recovery to drought suggest tropical forest biogeochemistry is more sensitive to climate change than previously believed, with potentially large direct and indirect consequences for regional and global carbon cycles
- Authors:
-
- Univ. of California, Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, Berkeley, CA (United States)
- Sponsoring Org.:
- Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division
- Contributing Org.:
- International Institute of Tropical Forestry, USDA Forest Service, University of Puerto Rico, LBNL, LLNL
- OSTI Identifier:
- 1484042
- Report Number(s):
- DOE-UCB-10567-1
Journal ID: ISSN 2041-1723
- Grant/Contract Number:
- SC0010567
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 58 GEOSCIENCES; Biogeosciences; data-model synthesis; tropical forest; greenhouse gases; oxygen; drought; hurricanes
Citation Formats
O’Connell, Christine S., Ruan, Leilei, and Silver, Whendee L. Drought drives rapid shifts in tropical rainforest soil biogeochemistry and greenhouse gas emissions. United States: N. p., 2018.
Web. doi:10.1038/s41467-018-03352-3.
O’Connell, Christine S., Ruan, Leilei, & Silver, Whendee L. Drought drives rapid shifts in tropical rainforest soil biogeochemistry and greenhouse gas emissions. United States. https://doi.org/10.1038/s41467-018-03352-3
O’Connell, Christine S., Ruan, Leilei, and Silver, Whendee L. Mon .
"Drought drives rapid shifts in tropical rainforest soil biogeochemistry and greenhouse gas emissions". United States. https://doi.org/10.1038/s41467-018-03352-3. https://www.osti.gov/servlets/purl/1484042.
@article{osti_1484042,
title = {Drought drives rapid shifts in tropical rainforest soil biogeochemistry and greenhouse gas emissions},
author = {O’Connell, Christine S. and Ruan, Leilei and Silver, Whendee L.},
abstractNote = {Climate change models predict more frequent and severe droughts in the humid tropics. How drought will impact tropical forest carbon and greenhouse gas dynamics is poorly understood. Here we report the effects of the severe 2015 Caribbean drought on soil moisture, oxygen, phosphorus (P), and greenhouse gas emissions in a humid tropical forest in Puerto Rico. Drought significantly decreases inorganic P concentrations, an element commonly limiting to net primary productivity in tropical forests, and significantly increases organic P. High-frequency greenhouse gas measurements show varied impacts across topography. Soil carbon dioxide emissions increase by 60% on slopes and 163% in valleys. Methane (CH4) consumption increases significantly during drought, but high CH4 fluxes post-drought offset this sink after 7 weeks. The rapid response and slow recovery to drought suggest tropical forest biogeochemistry is more sensitive to climate change than previously believed, with potentially large direct and indirect consequences for regional and global carbon cycles},
doi = {10.1038/s41467-018-03352-3},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Mon Apr 09 00:00:00 EDT 2018},
month = {Mon Apr 09 00:00:00 EDT 2018}
}
Web of Science
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