Here, we present an extended rationale for the ecohydrology science whereby climate change connects typical river basin ecology and hydrology with ocean dynamics and productivity. Such connectivity of diverse components creates a self-regulated supersystem. To support the discussion on the supersystem hypothesis, we used a negative sigmoidal function is used to model the limiting effect of salinity on productivity using satellite data and spectrally analysed in the time domain. There are evidences that the Amazon river plume comprises different environmental regimes, or habitats, that are physically structured by the influence of the North Brazil Current, its seasonal retroflection, mixing and river discharge. The extended ecohydrology of the Amazon basin proposed here offers a coherent synthesis that integrates atmosphere and ocean dynamics with ecological changes of tropical forests (both natural and anthropogenic), rivers and marine primary production. Such an extended framework is designed to improve the diagnostic of the causes of environmental variability from interannual (climate change) to subannual scales of (precipitation and ocean circulation and productivity).