Which effect limits phytoplankton blooms despite nutrient-rich upwelling in certain ocean regions?

💡 Explanation

When macro-nutrients are abundant, iron (Fe) limits phytoplankton blooms because it's necessary for chlorophyll synthesis and enzymatic functions. Therefore, iron limitation inhibits growth, rather than light reduction, grazing, or silica depletion which affect populations when iron is sufficient.

• Which process determines arc abandonment creating an oxbow lake after prolonged channel sinuosity?
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• Which seismic wave behavior allows detection across the Earth during transform fault earthquakes?
• Which process reduces a lake's water level during stratification overturn?
• Which process primarily drives cirque erosion deepening the basal region during glacial activity?
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