Which ecological shift results when upwelling cessation leads to nutrient depletion in surface waters?

💡 Explanation

When upwelling stops, nutrient supply declines because the transport of nutrient-rich deep water to the surface ceases, inhibiting photosynthesis. Therefore, primary productivity decreases substantially, rather than algal blooms thriving, seabed decomposition accelerating, or invertebrate populations booming, all of which require sustained nutrient sources.

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