Earth Sciences

Marine snow morphology illuminates the evolution of phytoplankton blooms and determines their subsequent vertical export

E. Trudnowska, L. Lacour, et al.

Discover how Emilia Trudnowska and her team unveil the complex world of marine snow morphotypes in Arctic phytoplankton blooms! Their groundbreaking study reveals the intricate relationship between particle characteristics and vertical carbon export, shedding light on the dynamic behavior of marine ecosystems.

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Playback language: English

Index

Abstract

Phytoplankton-produced organic carbon in the ocean's surface is either consumed or exported as marine snow. Vertical export efficiency depends on particle size, structure, and shape. This study presents a new method for objectively categorizing marine snow morphotypes using in situ imaging data from Arctic phytoplankton blooms. The method uses 24 morphological properties and a PCA-based k-means clustering to define five ecologically meaningful morphotypes. The study finds that marine snow morphotype distribution and vertical export change during different bloom phases and relates these changes to carbon export and plankton community dynamics.

Publisher

NATURE COMMUNICATIONS

Published On

May 14, 2021

Authors

Emilia Trudnowska, Léo Lacour, Mathieu Ardyna, Andreas Rogge, Jean Olivier Irisson, Anya M. Waite, Marcel Babin, Lars Stemmann

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