Bethanie R. Edwards

Submitted: 29 September 2025 You are already at the latest version Subscription Notify me about updates to this article or when a peer-reviewed version is published. This version is not peer-reviewed.

Abstract Diatoms are large phytoplankton that form the base of the marine food web and often bloom first when nutrients are injected into the surface ocean through upwelling or deep ocean mixing 1,2. Diatoms contribute 20% of global photosynthesis3 while disproportionately representing 40% of carbon export4, with most export occurring along the continental margins5.

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