Pré-Publication, Document De Travail Année : 2024

Ubiquity of inverted ’gelatinous’ ecosystem pyramids in the global ocean

Karp-Boss Lee
Boss Emmanuel

Résumé

Summary paragraph Plankton are essential in marine ecosystems. However, our knowledge of overall community structure is sparse due to inconsistent sampling across their very large organismal size range. Here we use diverse imaging methods to establish complete plankton inventories of organisms spanning five orders of magnitude in size. Plankton community size and trophic structure variation validate a long-held theoretical link between organism size-spectra and ecosystem trophic structures. We found that predator/grazer biomass and biovolume unexpectedly exceed that of primary producers at most (55%) locations, likely due to our better quantification of gelatinous organisms. Bottom- heavy ecosystems (the norm on land) appear to be rare in the ocean. Collectively, gelatinous organisms represent 30% of the total biovolume (8-9% of carbon) of marine plankton communities from tropical to polar ecosystems. Communities can be split into three extreme typologies: diatom/copepod-dominated in eutrophic blooms, rhizarian/chaetognath-dominated in oligotrophic tropical oceans, and gelatinous-dominated elsewhere. While plankton taxonomic composition changes with latitude, functional and trophic structures mostly depend on the amount of prey available for each trophic level. Given future projections of oligotrophication of marine ecosystems, our findings suggest that rhizarian and gelatinous organisms will increasingly dominate the apex position of planktonic ecosystems, leading to significant changes in the ocean’s carbon cycle.

DOI

Cite 10.5281/zenodo.10478780 Jeu de données Lombard, F., Guidi, L., Brandão, M. C., Coelho, L. P., Colin, S., Dolan, J. R., Elineau, A., Gasol, J. M., Grondin, P. L., Henry, N., Ibarbalz, F. M., Jalabert, L., Picheral, M., Pierella Karlusich, J. J., Rainer, P., Romagnan, J.-B., Stemmann, L., Acinas, A., Karp-Boss, L., … Gorsky, G. (2025). Dataset originating from various imaging devices used during the Tara Ocean Cruise and associated with the manuscript ‘Ubiquity of inverted “gelatinous” ecosystem pyramids in the global ocean’ (Version v1) [Data set]. Zenodo. https://doi.org/10.5281/ZENODO.10478780

DOI

Cite 10.1101/2024.02.09.579612 Autre Fabien, L., Lionel, G., Brandão, M. C., Pedro, C. L., Sébastien, C., Richard, D. J., Amanda, E., Gasol, J. M., Luc, G. P., Nicolas, H., Ibarbalz, F. M., Laëtitia, J., Michel, L., Séverinne, M., Zoé, M., Marc, P., Pierella Karlusich, J. J., Pepperkok, R., Jean-Baptiste, R., … Gabriel, G. (2024). Ubiquity of inverted ’gelatinous’ ecosystem pyramids in the global ocean. Cold Spring Harbor Laboratory. https://doi.org/10.1101/2024.02.09.579612

DOI

Cite 10.1101/2024.02.09.579612 Autre Fabien, L., Lionel, G., Brandão, M. C., Pedro, C. L., Sébastien, C., Richard, D. J., Amanda, E., Gasol, J. M., Luc, G. P., Nicolas, H., Ibarbalz, F. M., Laëtitia, J., Michel, L., Séverinne, M., Zoé, M., Marc, P., Pierella Karlusich, J. J., Pepperkok, R., Jean-Baptiste, R., … Gabriel, G. (2024). Ubiquity of inverted ’gelatinous’ ecosystem pyramids in the global ocean. Cold Spring Harbor Laboratory. https://doi.org/10.1101/2024.02.09.579612

Dates et versions

hal-04887475 , version 1 (15-01-2025)

Identifiants

Citer

Lombard Fabien, Guidi Lionel, Manoela Brandão, Coelho Luis Pedro, Colin Sébastien, et al.. Ubiquity of inverted ’gelatinous’ ecosystem pyramids in the global ocean. 2025. ⟨hal-04887475⟩
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