Biogeosciences
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Articles | Volume 23, issue 5
Articles | Volume 23, issue 5
https://doi.org/10.5194/bg-23-2003-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-2003-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 5
Research article
 | 
17 Mar 2026
Research article |  | 17 Mar 2026

Alternative dynamic regimes of marine biogeochemical models in perturbed environments

Guido Occhipinti, Davide Valenti, and Paolo Lazzari

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Aksnes, D., Dupont, N., Staby, A., Fiksen, Ø., Kaartvedt, S., and Aure, J.: Coastal water darkening and implications for mesopelagic regime shifts in Norwegian fjords, Marine Ecol. Prog. Ser., 387, 39–49, https://doi.org/10.3354/meps08120, 2009. a
Álvarez, E., Cossarini, G., Teruzzi, A., Bruggeman, J., Bolding, K., Ciavatta, S., Vellucci, V., D'Ortenzio, F., Antoine, D., and Lazzari, P.: Chromophoric dissolved organic matter dynamics revealed through the optimization of an optical–biogeochemical model in the northwestern Mediterranean Sea, Biogeosciences, 20, 4591–4624, https://doi.org/10.5194/bg-20-4591-2023, 2023. a, b, c, d
Antoine, D., Chami, M., Claustre, H., d’Ortenzio, F., Morel, A., Bécu, G., Gentili, B., Louis, F., Ras, J., Roussier, E., Scott, A. J., Tailliez, D., Hooker, S. B., Guevel, P., Desté, J.-F., Dempsey, C., and Adams, D.: BOUSSOLE: A joint CNRS-INSU, ESA, CNES, and NASA ocean color calibration and validation activity, Tech. rep., NASA Technical Memorandum, 2006. a, b
Anugerahanti, P., Roy, S., and Haines, K.: Perturbed Biology and Physics Signatures in a 1-D Ocean Biogeochemical Model Ensemble, Front. Marine Sci., 7, 549, https://doi.org/10.3389/fmars.2020.00549, 2020. a
Arnoldi, J., Loreau, M., and Haegeman, B.: The inherent multidimensionality of temporal variability: how common and rare species shape stability patterns, Ecol. Lett., 22, 1557–1567, https://doi.org/10.1111/ele.13345, 2019. a
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Due to climate change shifts in ecosystem structure and function have been increasingly documented in marine ecosystems around the globe. We tested whether a marine biogeochemical model can predict shifts to alternative regimes in plankton and biogeochemical processes under environmental perturbations. Simulations show that perturbations can drive the system into new regimes, with responses that are either reversible or hysteretic, depending on the type and intensity of the disturbance.
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