Which consequence results when volcanic ashfall is extensive above mature forests?

💡 Explanation

Widespread dieback happens because shading from ash decreases forest photosynthetic capacity via light attenuation, rather than increased nutrients, so only ash-tolerant species survive; therefore forests suffer dieback, rather than benefiting from ash.

• Which phenomenon exacerbates collapse-sinkhole formation during intense rainfall on karst?
• Which outcome occurs when a mid-latitude gyre intensifies?
• Which outcome results when transform fault motion is impeded?
• Which risk increases when a large coastal levee system experiences prolonged saltwater intrusion?
• Which atmospheric effect results when the Ferrel cell circulation pattern encounters a major mountain range?
• Which outcome occurs when the angle of a transform fault relative to the spreading ridge decreases significantly?