Which outcome results when El Niño-Southern Oscillation suppresses coastal upwelling in the eastern Pacific Ocean?

💡 Explanation

When El Niño suppresses upwelling, the nutricline deepens because the normal ascent of nutrient-rich water is reduced, decreasing nutrient availability in surface waters, leading to reduced phytoplankton and decline in fish stocks. Therefore a decline in fish results, rather than increased productivity, carbon sequestration, or stronger winds which require opposite conditions.

• Which mechanism dictates stream incision rates along orogenic belts during tectonic uplift?
• Which mechanism causes higher chlorophyll concentrations along coastlines in coastal regions?
• Which outcome occurs when the hydraulic gradient decreases sharply along a river flowing into a lake?
• Which mechanism causes regional metamorphism during oceanic plate subduction beneath a continental plate?
• Which risk increases when a subtropical gyre's surface temperature gradient weakens significantly?
• Which result occurs to infrastructure when permafrost thaws, increasing rates of solifluction?