Which ecological outcome occurs when coastal upwelling currents are significantly reduced?

💡 Explanation

When upwelling is reduced, nutrient transport to surface waters declines because nutrient-rich deep water mixes less with surface layers, limiting nutrient enrichment needed for phytoplankton growth. Therefore phytoplankton blooms decrease significantly, rather than increased oxygen, reef development or decreased acidity, because upwelling supplies essential nutrients depleted in the surface.

• Which outcome occurs when freshwater influx disrupts circulation?
• Which resulting phenomenon occurs when highly viscous lava cools rapidly?
• Which effect accelerates topsoil creep resulting from permafrost thaw in Arctic regions?
• Which process accelerates cirque formation when meltwater accumulates in the bergschrund?
• Which mechanism accelerates sediment deposition at the seaward mouth of a fjord system following deglaciation?
• Which process drives magma differentiation at subduction zones?