Direct measurements of air-sea CO2 exchange over a coral reef

Mcgowan, Hamish A., Mackellar, Mellissa C. and Gray, Michael A. (2016) Direct measurements of air-sea CO2 exchange over a coral reef. Geophysical Research Letters, 43 9: 4602-4608. doi:10.1002/2016GL068772


Author Mcgowan, Hamish A.
Mackellar, Mellissa C.
Gray, Michael A.
Title Direct measurements of air-sea CO2 exchange over a coral reef
Formatted title
Direct measurements of air-sea CO2 exchange over a coral reef
Journal name Geophysical Research Letters   Check publisher's open access policy
ISSN 1944-8007
0094-8276
Publication date 2016-05-16
Year available 2016
Sub-type Article (original research)
DOI 10.1002/2016GL068772
Open Access Status Not Open Access
Volume 43
Issue 9
Start page 4602
End page 4608
Total pages 7
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2017
Language eng
Formatted abstract
Quantification of CO2 exchange with the atmosphere over coral reefs has relied on microscale measurements of pCO2 gradients across the air-sea interfacial boundary; shipboard measurements of air-sea CO2 exchange over adjacent ocean inferred to represent over reef processes or ecosystem productivity modeling. Here we present by way of case study the first direct measurements of air-sea CO2 exchange over a coral reef made using the eddy covariance method. Research was conducted during the summer monsoon over a lagoonal platform reef in the southern Great Barrier Reef, Australia. Results show the reef flat to be a net source of CO2 to the atmosphere of similar magnitude as coastal lakes, while adjacent shallow and deep lagoons were net sinks as was the surrounding ocean. This heterogeneity in CO2 exchange with the atmosphere confirms need for spatially representative direct measurements of CO2 over coral reefs to accurately quantify their role in atmospheric carbon budgets.
Keyword CO2
Coral reef
Eddy covariance
Air-seaCO2
Carbon cycle
Net source of CO2
Net sink of CO2
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
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