Which mechanism causes increased marine productivity when coastal upwelling occurs?

💡 Explanation

When upwelling occurs, nutrient transport to surface waters increases because deep ocean water is rich in dissolved nutrients like nitrates and phosphates that fertilize phytoplankton. Therefore, nutrient transport leads to increased productivity rather than increased solar absorption, oxygen concentration, or density stratification, processes requiring different stimuli.

• Which geomorphic outcome accelerates when Arctic permafrost thaws containing large amounts of trapped organic matter?
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• Which process determines the rate of sediment deposition in an oxbow lake following channel avulsion?
• Which ecological pattern consistently arises adjacent arid coastal regions as persistent offshore winds drive coastal upwelling?
• Which mechanism amplifies the initial Milankovitch cycle forcing on global temperatures?
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