Increased stratification hinders vertical mixing within gyres causing what?

💡 Explanation

Increased stratification prevents nutrient-rich deep water from reaching the surface via **upwelling**, because dense water resists mixing. Therefore, downward nutrient transport decreases due to diminished nutrient availability, rather than increased oxygen/circulation if mixing were more prevalent.

• Which mechanism explains warmer temperatures alongside poleward-flowing ocean streams, such as the Gulf Stream?
• Which weathering-driven outcome results on basaltic rock in humid Icelandic environments?
• Which outcome occurs when a subducting oceanic plate encounters increased mantle resistance?
• Which mechanism causes increased regional subsidence following megathrust earthquakes?
• Which risk increases when basaltic lava flows rapidly onto glacial ice?
• Near a large quarry, which outcome results when groundwater acidity increases beyond limestone dissolution equilibrium?