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 consequence results when glacier calving exacerbates cirque erosion?
• Which geophysical outcome primarily disrupts global anchovy populations from South American upwelling regions during an El Niño event?
• Which topographic outcome on a semi-arid plain results when strong winds preferentially erode fine sediments?
• Which downslope movement occurs when permafrost thaw increases soil moisture above sediment shear strength on a tundra slope?
• Which mechanism causes land subsidence when groundwater is extracted from aquifers near a fault line?
• Which flow regime results when glacial meltwater discharge increases within a fjord system?