Articles | Volume 14, issue 4
Geosci. Model Dev., 14, 1949–1985, 2021
https://doi.org/10.5194/gmd-14-1949-2021
Geosci. Model Dev., 14, 1949–1985, 2021
https://doi.org/10.5194/gmd-14-1949-2021

Model description paper 13 Apr 2021

Model description paper | 13 Apr 2021

SPEAD 1.0 – Simulating Plankton Evolution with Adaptive Dynamics in a two-trait continuous fitness landscape applied to the Sargasso Sea

Guillaume Le Gland et al.

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Short summary
We present an ecological model called SPEAD wherein various phytoplankton compete for nutrients. Phytoplankton in SPEAD are characterized by two continuously distributed traits: optimal temperature and nutrient half-saturation. Trait diversity is sustained by allowing the traits to mutate at each generation. We show that SPEAD agrees well with a more classical discrete model for only a fraction of the cost. We also identify realistic values for the mutation rates to be used in future models.