Phytoplankton is responsible for fixing dissolved inorganic carbon into organic matter via photosynthesis at the surface of the ocean. Sinking phytoplankton cells transport phytoplankton-derived organic matter subsequently to deeper water layers. This represents the marine biological pump, a crucial component of the climate system, as it moves 11 G tons of carbon to the deep ocean annually. Here we will unravel the interplay between the phytoplankton community composition vertical and lateral particle transport on the organic matter remineralization in coastal seas, to better understand the coastal carbon sink. Due to the imminent climate crises and the significant role that the marine ecosystems play in modulating climate, we urgently need a better understanding of the functioning of the marine biological pump in coastal seas.

2023

2027