Which ocean ecosystem consequence results when seasonal equatorial upwelling diminishes?

💡 Explanation

Diminished upwelling reduces nutrient supply, therefore phytoplankton productivity decreases dramatically due to reduced nutrient cycling. This affects whole ecosystems, rather than only thermocline depth changes, erosion rates, or hypoxic zone dimensions, because upwelling directly supplies nutrients.

• Which outcome occurs when atmospheric pressure gradients drive the geostrophic wind due to the Coriolis effect?
• Which outcome occurs when glacial melt increases substantially?
• Which mechanism dominates cave passage alignment along weaknesses?
• Which hydrologic outcome results when atmospheric streams encounter orographic barriers?
• Which deformation mechanism causes increased earthquake frequency along transform plate boundaries given increased friction?
• Which outcome results in subtropical gyres when encountering continental landmasses?