Which mechanism disrupts marine food webs when intensified coastal upwelling brings anoxic water to the surface?

💡 Explanation

When intensified upwelling occurs, anoxic bottom water rises because decomposition processes depleted the oxygen. This process leads to widespread hypoxia near the surface, causing marine life to suffocate. Therefore hypoxia ensues, rather than nutrient limitation, acidification, thermal stratification which operate via different processes.

• Which risk increases when highly viscous magma generates pyroclastic flows?
• Which outcome results when intense rainfall strikes thick loess deposits?
• Which effect impedes infrastructure development in regions experiencing active solifluction?
• Which risk increases when fluid injection occurs near a dormant seismic fault zone?
• Which risk increases when rapid subsidence occurs in a protected floodplain behind engineered levees?
• Along exposed sandstone coastlines, which outcome typically results with differential erosion?