Which impact occurs when El Niño's reduced upwelling weakens offshore ecosystems?

💡 Explanation

When El Niño diminishes upwelling, nutrient supply decreases because reduced vertical water movement affects plankton growth therefore disrupting marine food webs, forcing animals to migrate. Therefore, animal migration results, rather than other effects related to carbon cycling, fog behavior, or salinity variations that require different specific mechanisms.

• Which mechanism causes regional uplift when a continental plate overrides a younger oceanic plate at a compressional boundary?
• Which long-term outcome results from sediment disruption of tidal inlet hydrodynamics?
• Which mechanism causes the offset of river channels along strike-slip transform plate boundaries?
• Which phenomenon causes poleward heat transport within Earth's atmosphere?
• Which landscape feature most directly initiates desert pavement formation by aeolian processes?
• Which risk increases when rapidly rising floodwater overtops a natural levee along a major river?