Charting the course of : Incorporating nonlinear elastic interactions and life cycles in the Maxey-Riley model.

The surge of pelagic in the Intra-America Seas, particularly the Caribbean Sea, since the early 2010s has raised significant ecological concerns. This study emphasizes the need for a mechanistic understanding of dynamics to elucidate the ecological impacts and uncertainties associated with blooms. By introducing a novel transport model, physical components such as ocean currents and winds are integrated with biological aspects affecting the life cycle, including reproduction, grounded in an enhanced Maxey-Riley theory for floating particles. Nonlinear elastic forces among the particles are included to simulate interactions within and among rafts. This promotes aggregation, consistent with observations, within oceanic eddies, which facilitate their transport. This cannot be achieved by the so-called leeway approach to transport, which forms the basis of current modeling. Using satellite-derived data, the model is validated, outperforming the leeway model. Publicly accessible codes are provided to support further research and ecosystem management efforts. This comprehensive approach is expected to improve predictive capabilities and management strategies regarding dynamics in affected regions, thus contributing to a deeper understanding of marine ecosystem dynamics and resilience.