thumbnail

Air-water gas exchange and CO2 flux in a mangrove-dominated estuary

Geophysical Research Letters

By:
, , , , and
DOI: 10.1002/2013GL058785

Links

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.

Geospatial Extents

Additional Publication Details

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
Number of Pages:
6
Country:
United States
State:
Florida
Other Geospatial:
Shark River