Which impact results when coastal upwelling weakens due to increased ocean stratification?

💡 Explanation

When upwelling weakens, nutrient transport to the surface decreases because increased stratification prevents mixing between deep, nutrient-rich waters and surface layers, limiting phytoplankton growth. Therefore, primary productivity declines rather than oxygen increasing, temperature becoming variable, or hypoxic zones expanding which require different oceanographic conditions.

• Which mechanism increases methane release from thawing permafrost in arctic tundra regions?
• Which mechanism reduces soil fertility when prolonged floodplain inundation occurs on alluvial plains used for agriculture?
• Which morphology change in barrier islands results when wave refraction focuses energy on adjacent headlands?
• Which mechanism increases stream salinity when hydraulic fracturing occurs near shale deposits?
• Which mechanism initiates earthquake rupture propagation during strike-slip fault movement?
• Which outcome results when extensive soil disturbance by agriculture precedes intensified desert deflation?