Which feedback on coastal ecosystems results when large gyres stagnate?

💡 Explanation

Stagnant gyres disrupt nutrient cycling because decreased water mixing reduces nutrient upwelling, resulting in nutrient depletion along coastal margins. Therefore, limited nutrients inhibit phytoplankton growth, rather than enhancing carbon sequestration, which happens with nutrient abundance.

• Which nutrient cycling effect occurs when increased stratification weakens subtropical gyre circulation?
• Which mechanism causes seasonal shifts in global precipitation patterns relating to Hadley cells?
• Which risk increases significantly due to blocked vent viscous lava?
• Which outcome reduces marine primary productivity when coastal upwelling weakens during an El Niño event?
• Which mechanism causes meandering stream formation across flat plains undergoing regional uplift?
• Which seismic effect results when a large earthquake occurs along a transform fault bordering a continental plate?