5212 
Q. Devresse et al.: Eddy-enhanced primary production sustains heterotrophic microbial activities 
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Figure 5. Depth distribution of heterotrophic bacterial abundance and activities from the surface to 100 m. Heterotrophic bacterial abundance 
(HB; a), bacterial respiration (BR; b), bacterial production (BP; c), and bacterial growth efficiency (BGE; d). Dashed red lines show the 
western and eastern boundaries of the cyclonic eddy periphery. FZ refers to frontal zone. BP and CR rates at in situ temperature were 
estimated based on Löpez-Urrutia and Morän (2007) and on Regaudie-de-Gioux and Duarte (2012). BR rates were estimated from measured 
and temperature-corrected CR rates based on Aranguren-Gassis et al. (2012). Details are provided in the methods section and the Supplement. 
Frontal zone 
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Figure 6. Integrated total primary production (PPToT) and community respiration (CR) rates over the mixed layer during M156. 
Biogeosciences, 19. 51995219, 2022 
https://doi.org/10.5194/bg-19-5199-2022