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Quantifying the time lag between organic matter production and export in the surface ocean: implications for estimates of export efficiency
Citation
Stange, P and Bach, LT and Le Moigne, FAC and Taucher, J and Boxhammer, T and Riebesell, U, Quantifying the time lag between organic matter production and export in the surface ocean: implications for estimates of export efficiency, Geophysical Research Letters, 44, (1) pp. 268-276. ISSN 0094-8276 (2017) [Refereed Article]
Abstract
The ocean's potential to export carbon to depth partly depends on the fraction of primary production (PP) sinking out of the euphotic zone (i.e., the e‐ratio). Measurements of PP and export flux are often performed simultaneously in the field, although there is a temporal delay between those parameters. Thus, resulting e‐ratio estimates often incorrectly assume an instantaneous downward export of PP to export flux. Evaluating results from four mesocosm studies, we find that peaks in organic matter sedimentation lag chlorophyll a peaks by 2 to 15 days. We discuss the implications of these time lags (TLs) for current e‐ratio estimates and evaluate potential controls of TL. Our analysis reveals a strong correlation between TL and the duration of chlorophyll a buildup, indicating a dependency of TL on plankton food web dynamics. This study is one step further toward time‐corrected e‐ratio estimates.
Item Details
Item Type: | Refereed Article |
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Keywords: | biological carbon pump, export |
Research Division: | Earth Sciences |
Research Group: | Oceanography |
Research Field: | Biological oceanography |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the earth sciences |
UTAS Author: | Bach, LT (Dr Lennart Bach) |
ID Code: | 133659 |
Year Published: | 2017 |
Web of Science® Times Cited: | 23 |
Deposited By: | Ecology and Biodiversity |
Deposited On: | 2019-07-05 |
Last Modified: | 2019-07-09 |
Downloads: | 0 |
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