Articles | Volume 18, issue 5
Biogeosciences, 18, 1749–1767, 2021
https://doi.org/10.5194/bg-18-1749-2021

Special issue: Atmospheric deposition in the low-nutrient-low-chlorophyll...

Biogeosciences, 18, 1749–1767, 2021
https://doi.org/10.5194/bg-18-1749-2021

Research article 15 Mar 2021

Research article | 15 Mar 2021

Deep maxima of phytoplankton biomass, primary production and bacterial production in the Mediterranean Sea

Emilio Marañón et al.

Data sets

PEACETIME cruise, RV Pourquoi pas? C. Guieu and K. Desboeufs https://doi.org/10.17600/17000300

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Short summary
The concentration of chlorophyll is commonly used as an indicator of the abundance of photosynthetic plankton (phytoplankton) in lakes and oceans. Our study investigates why a deep chlorophyll maximum, located near the bottom of the upper, illuminated layer develops in the Mediterranean Sea. We find that the acclimation of cells to low light is the main mechanism involved and that this deep maximum represents also a maximum in the biomass and carbon fixation activity of phytoplankton.
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