Oceanic and freshwater environments are complex ecosystems since they usually involve different processes belonging to physics, biology and chemistry. Moreover, these processes often evolve according to nonlinear laws and/or couplings. As a consequence, the resulting structures may display specific statistical properties such as a high
variability over a wide range of scales in space and time, from climatic to microscopic ranges. In this framework, this session will consider scaling and nonlinear aspects of physical, biological and chemical fields in the ocean and freshwaters.

Theoretical, experimental and numerical studies are welcome. The scope of the session includes statistical models and methods, as well as studies dedicated to threshold effects and nonlinear, extreme or scaling behaviors.

Specific topics include:
- Turbulence studies in marine, river, and lake environments;
- Analysis of the outputs of numerical models;
- Time series analysis: from monitoring networks, long term biological time series, high frequency measurements;
- Spatial variability: heterogeneity and patchiness of aquatic fields;
- Physical-chemical or physical-biological couplings, blooms, marine snow formation, sediment flocs dynamics;
- Animal behaviour (including plankton) and its coupling with marine and freshwater environmental variability;
- Biodiversity dynamics, rank-abundance scaling properties and species-area relations.