Climate & Environmentpreprint2026-09-28

PlanktonLake-CEREEP- A Freshwater Plankton Image Dataset with Semi-Automated Label Cleaning

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Abstract

Plankton plays a fundamental role in aquatic ecosystems, influencing biogeochemical cycles and serving as a key food source for many organisms. Recent high-throughput imaging technologies enable the rapid acquisition of large volumes of microscopic images, creating new opportunities for monitoring planktonic ecosystems. However, the manual processing and annotation of the vast amounts of data generated by these devices remain time-consuming tasks. In this context, machine learning-based classification models offer a promising solution. In this data paper, we introduce a new labeled freshwater plankton dataset comprising approximately 88,000 images distributed across 43 taxa. We also present the labeling assistance method we used to facilitate dataset annotation. Finally, we present a baseline based on a convolutional neural network (CNN), which achieves a classification accuracy of 93% on our dataset.

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View paper (DOI)Open access versionOpenAlexbioRxiv (Cold Spring Harbor Laboratory)Published 2026-09-28

Authors: Léo Dechaumet, Carine Puppo, David Carmignac, Samy Blusseau, Beatriz Marcotegui, Étienne Decencière, Gérard Lacroix, Jean-François Le Galliard

Institutions: Université Paris Sciences et Lettres, École Nationale Supérieure des Mines de Paris, Cereep Ecotron Île-de-France