Air-water gas exchange and CO2 flux in a mangrove-dominated estuary
Geophysical Research Letters
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Abstract
Mangrove forests are highly productive ecosystems, but the fate of mangrove-derived carbon remains uncertain. Part of that uncertainty stems from the fact that gas transfer velocities in mangrove-surrounded waters are not well determined, leading to uncertainty in air-water CO2 fluxes. Two SF6 tracer release experiments were conducted to determine gas transfer velocities (k(600) = 8.3 ± 0.4 and 8.1 ± 0.6 cm h−1), along with simultaneous measurements of pCO2 to determine the air-water CO2 fluxes from Shark River, Florida (232.11 ± 23.69 and 171.13 ± 20.28 mmol C m−2 d−1), an estuary within the largest contiguous mangrove forest in North America. The gas transfer velocity results are consistent with turbulent kinetic energy dissipation measurements, indicating a higher rate of turbulence and gas exchange than predicted by commonly used wind speed/gas exchange parameterizations. The results have important implications for carbon fluxes in mangrove ecosystems.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Air-water gas exchange and CO2 flux in a mangrove-dominated estuary |
| Series title | Geophysical Research Letters |
| DOI | 10.1002/2013GL058785 |
| Volume | 41 |
| Issue | 1 |
| Year Published | 2014 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Southeast Ecological Science Center |
| Description | 6 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geophysical Research Letters |
| First page | 108 |
| Last page | 113 |
| Country | United States |
| State | Florida |
| Other Geospatial | Shark River |
| Google Analytic Metrics | Metrics page |