Articles | Volume 6-osr9
https://doi.org/10.5194/sp-6-osr9-4-2025
https://doi.org/10.5194/sp-6-osr9-4-2025
30 Sep 2025
 | OSR9 | Chapter 2.1
 | 30 Sep 2025 | OSR9 | Chapter 2.1

Micronekton indicators evolution based on biophysically defined provinces

Sarah Albernhe, Thomas Gorgues, Olivier Titaud, Patrick Lehodey, Christophe Menkes, and Anna Conchon

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This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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Cited articles

Albernhe, S., Gorgues, T., Lehodey, P., Menkes, C., Titaud, O., De La Giclais, S. M., and Conchon, A.: Global characterization of modelled micronekton in biophysically defined provinces, Prog. Oceanogr., 229, 103370, https://doi.org/10.1016/j.pocean.2024.103370, 2024a.​​​​​​​ 
Albernhe, S., Gorgues, T., Titaud, O., Lehodey, P., Menkes, C., and Conchon, A.: Biophysical provinces, monthly times series 1998–2023, TIB AV-Portal [video], https://doi.org/10.5446/68853, 2024b. 
Ariza, A., Lengaigne, M., Menkes, C., Lebourges-Dhaussy, A., Receveur, A., Gorgues, T., Habasque, J., Gutiérrez, M., Maury, O., and Bertrand, A.: Global decline of pelagic fauna in a warmer ocean, Nat. Clim. Change, 12, 928–934, https://doi.org/10.1038/s41558-022-01479-2, 2022. 
Aumont, O., Ethé, C., Tagliabue, A., Bopp, L., and Gehlen, M.: PISCES-v2: an ocean biogeochemical model for carbon and ecosystem studies, Geosci. Model Dev., 8, 2465–2513, https://doi.org/10.5194/gmd-8-2465-2015, 2015. 
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Micronekton are marine organisms gathering a wide diversity of taxa (crustaceans, fish, cephalopods) 2 to 20 cm in size. They are responsible for an important carbon export to the deep ocean and are the main prey for marine predators. We define provinces of homogeneous environmental parameters, representing areas of common micronekton biomass and vertical structure. We observe the evolution of the provinces in time from 1998 to 2023 to account for the seasonal to interannual variability.
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