AI Article Synopsis
- The study investigates how the death of phytoplankton affects the amount of settleable particulate organic matter (POM) in marine environments, finding a positive correlation between the number of dead algal cells and the carbon content of POM.
- Different algal species showed varying contributions of cell death to POC, indicating that species type plays a role in POM production.
- Field surveys in the East China Sea confirmed that phytoplankton death is a key factor influencing POC levels, and a specific formula was established to quantify this relationship.
Article Abstract
Phytoplankton's death contributes to marine settleable particulate organic matter (POM). In this study, we used laboratory cultivation of different algal species to identify a positive correlation between the cumulative number of dead algal cells and POC (carbon content of the settleable POM). The contribution coefficient of cell death to POC varied among different algal species. Additionally, the field survey and incubation experiment were conducted in the East China Sea (ECS) to explore the spatial-temporal correlation between phytoplankton death and POC. The results concluded that phytoplankton death was the main factor controlling POC. In the ECS, the relationship between the surface cumulative mass of POC and the cumulative number of dead cells followed: Cumulative mass of POC(mg) = 0.487 × Cumulative number of dead cells (/10) + 0.069. This study provided a methodology to quantitatively explain the relationship between phytoplankton death and settleable POM.
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| http://dx.doi.org/10.1016/j.marpolbul.2024.116197 | DOI Listing |
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