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Carbon Dioxide (CO2) Fluxes from Terrestrial and Aquatic Environments in a High-Altitude Tropical Catchment
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| Type: | Resource | |
| Storage: | The size of this resource is 12.4 MB | |
| Created: | Aug 28, 2025 at 6:01 a.m. (UTC) | |
| Last updated: | Sep 17, 2025 at 1:17 a.m. (UTC) | |
| Published date: | Sep 17, 2025 at 1:17 a.m. (UTC) | |
| DOI: | 10.4211/hs.b61c56f5413d4f31a594b3eecc101a08 | |
| Citation: | See how to cite this resource | |
| Content types: | CSV Content |
| Sharing Status: | Published |
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| Views: | 381 |
| Downloads: | 7 |
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Abstract
High-altitude tropical grasslands, known as “páramos", are characterized by their high solar radiation, high precipitation, and low temperature. They exhibit some of the highest rates of ecosystem carbon storage per unit area on Earth. Recent observations have shown that paramos may be a net source of CO2 to the atmosphere as a result of climate change; however, little is known about the source of this excess CO2 in these mountainous environments or whether specific landscape positions may be disproportionally contributing more CO2 than others. We evaluated the spatial and temporal variability of surface CO2 fluxes from adjacent terrestrial and aquatic environments based on a suite of field measurements performed over seven weeks. Our findings revealed the importance of hydrologic dynamics in regulating the magnitude and likely fate of dissolved carbon in the stream. While headwater catchments are known to contribute disproportionately larger amounts of carbon to the atmosphere than their downstream counterparts, our study highlights the spatial heterogeneity of CO2 fluxes within and between aquatic and terrestrial landscape elements in headwater catchments of complex topography. Stream carbon flux to the atmosphere appeared to be transport-limited (i.e., controlled by flow characteristics, turbulent flow, water velocity) in the upper reaches of the stream, and source limited (i.e., controlled by carbon availability) in the lower reaches of the stream. These findings represent first step in understanding ecosystem carbon cycling at the interface of terrestrial and aquatic ecosystems in high-altitude, tropical, headwater catchments.
Subject Keywords
Coverage
Spatial
Temporal
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Related Resources
| This resource is referenced by | Schneider, C. L., Herrera, M., Raisle, M. L., Murray, A. R., Whitmore, K. M., Encalada, A. C., et al. (2020). Carbon dioxide (CO2) fluxes from terrestrial and aquatic environments in a high‐altitude tropical catchment. Journal of Geophysical Research: Biogeosciences, 125, e2020JG005844. https://doi.org/ 10.1029/2020JG005844 |
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
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| U.S. National Science Foundation | EAR‐1847331 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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