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 result occurs to infrastructure when permafrost thaws, increasing rates of solifluction?
• Which crustal response originates when hydration weakens subducting oceanic lithosphere?
• Which mechanism governs lahar directionality flowing from stratovolcanoes?
• Which process primarily maintains the anticlockwise circulation of the North Pacific Subpolar Gyre?
• Which outcome occurs when air masses converge near the equator?
• Which process contributes to the formation of thermohaline stratification in deep lakes during winter?