Which risk increases when mountain streams fed by glacial melt reach elevated temperatures?

💡 Explanation

When glacial meltwater increases stream temperature, it reduces dissolved oxygen, leading to a decrease in habitat suitability and causing reduced hyporheic biodiversity because the **Thermal Stress** exceeds tolerance thresholds. Therefore, biodiversity decreases, rather than enhanced denitrification (anaerobic process).

• Which risk increases when an earthquake occurs near fine-grained unconsolidated sediment deposits?
• Which risk increases when highly viscous magma generates pyroclastic flows?
• Which phenomenon causes density currents to transport sediment along lake bottoms after a flash flood?
• Which outcome occurs when excessive agricultural irrigation destabilizes poorly consolidated loess deposits?
• Which effect typically occurs in coastal Peruvian fisheries during prolonged El Niño events?
• Which outcome often occurs when differential stress builds along transform plate edges?