Which process dramatically accelerates when meandering river's neck is cut off?

💡 Explanation

When a meander neck is cut off forming an oxbow lake, the isolated water body becomes stagnant; anaerobic decomposition by microbes of organic matter becomes dominant producing methane at elevated local rate. Therefore, methane production increase results, rather than salinization, blocking or stratification which depend on alternate dominant mechanism.

• Which feedback loop affects thermohaline circulation when Arctic ice melt introduces freshwater into the North Atlantic?
• Increased freshwater influx into the North Atlantic disrupts the Atlantic Meridional Overturning Circulation by which mechanism?
• Which mechanism limits biological productivity in stagnant, deep ocean basins cut off from surface circulation?
• Which process significantly changes local weather patterns due to the rain shadow effect?
• Which mechanism causes relatively shallow sill depths at the mouth of many fjords?
• Which outcome occurs when increased sediment supply interacts with wave refraction at a coastal island?