File:Carbon fluxes at the level of a gravitational sinking particle.png
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[edit]DescriptionCarbon fluxes at the level of a gravitational sinking particle.png |
English: Carbon fluxes at the level of a gravitational sinking particle (inspired by Azam and Long, 2001). The sinking POC is moving downward followed by the chemical plume (Kiørboe, 2011). The plain white arrows represent the carbon flow. Panel (a) represents the classical view of a non-bioluminescent particle. The length of the plume is identified by the scale on the side (Kiørboe and Jackson, 2001). Panel (b) represents the case of a glowing particle in the bioluminescence shunt hypothesis. Bioluminescent bacteria are represented aggregated onto the particle. Their light emission is shown as a bluish cloud around it. Blue dotted arrows represent the visual detection and the movement toward the particle of the consumer organisms. Increasing the visual detection allows a better detection by upper trophic levels, potentially leading to the fragmentation of sinking POC into suspended POC due to sloppy feeding. The consumption of the bioluminescent POC by fish can lead to the emission of bioluminescent fecal pellets (repackaging), which can also be produced with non-bioluminescent POC if the fish gut is already charged with bioluminescent bacteria.
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Date | |
Source | doi:10.5194/bg-17-3757-2020 |
Author | Lisa Tanet, Séverine Martini, Laurie Casalot and Christian Tamburini |
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