Which outcome occurs when coastal upwelling is disrupted by increased freshwater runoff?

💡 Explanation

When freshwater runoff increases significantly, it stratifies the water column because freshwater is less dense, reducing vertical mixing and upwelling which brings oxygen-rich water from depth. Therefore, decreased dissolved oxygen results, rather than increased plankton, stable stratification, or fewer algal blooms which require nutrient upwelling.

• Which outcome is most likely when urban infrastructure crosses a major transform fault zone?
• What ocean dynamics create stronger ocean upwelling along the western coasts of continents around the globe?
• Which erosion event results from high pore liquid pressure in sediments on steep volcanic slopes?
• When a volcanic eruption deposits a thick tephra layer on unstable slopes, which mass wasting mechanism amplifies debris flow hazards?
• Which process primarily accelerates cirque formation at high altitudes due to increased freeze thaw weathering?
• Which lateral effect results when groundwater pressure changes along a transform fault line?