Which coastal ecosystem consequence results from El Niño?

💡 Explanation

Reduced trade winds during El Niño cause weakened upwelling, therefore diminished nutrient supply to surface waters. This suppresses phytoplankton growth because nutrient transport decreases, rather than increased erosion or deep-water ventilation, which are separate processes not driven solely by upwelling.

• Which mechanism causes reduced water column mixing within a fjord during spring snowmelt?
• Which result occurs when acidic rainfall intensity increases?
• Which phenomenon forms stepped topography within glacial lakes?
• Which risk increases when a city's sewage pipes cross a strike-slip fault?
• Which phenomenon causes density currents to transport sediment along lake bottoms after a flash flood?
• Which mechanism causes meandering stream morphology enhancement when vegetation is disrupted along riverbanks?