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.

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