Tools
Tools
Belcher, A, Henson, SA, Manno, C, Hill, SL, Atkinson, A, Thorpe, SE, Fretwell, P, Ireland, L and Tarling, GA 2019 Krill faecal pellets drive hidden pulses of particulate organic carbon in the marginal ice zone. Nature Communications, 10 (1). https://doi.org/10.1038/s41467-019-08847-1
|
Text
Belcher et al. Nat Comms 2019.pdf - Published Version Available under License Creative Commons Attribution. Download (1MB) | Preview |
Abstract/Summary
The biological carbon pump drives a flux of particulate organic carbon (POC) through the ocean and affects atmospheric levels of carbon dioxide. Short term, episodic flux events are hard to capture with current observational techniques and may thus be underrepresented in POC flux estimates. We model the potential hidden flux of POC originating from Antarctic krill, whose swarming behaviour could result in a major conduit of carbon to depth through their rapid exploitation of phytoplankton blooms and bulk egestion of rapidly sinking faecal pellets (FPs). Our model results suggest a seasonal krill FP export flux of 0.039 GT C across the Southern Ocean marginal ice zone, corresponding to 17–61% (mean 35%) of current satellite-derived export estimates for this zone. The magnitude of our conservatively estimated flux highlights the important role of large, swarming macrozooplankton in POC export and, the need to incorporate such processes more mechanistically to improve model projections.
| Item Type: | Publication - Article |
|---|---|
| Divisions: | Plymouth Marine Laboratory > Science Areas > Marine Ecology and Biodiversity |
| Depositing User: | Kim Hockley |
| Date made live: | 27 Feb 2019 09:30 |
| Last Modified: | 25 Apr 2020 09:59 |
| URI: | https://plymsea.ac.uk/id/eprint/8152 |
Actions (login required)
 |
View Item |