Human Impacts on Wetlands and Mangroves Practice Test

Higher sediment deposition from floods because levees concentrate floodwaters onto the wetland surface more frequently.

No effect because wetlands are closed systems and do not depend on river flooding or tidal exchange.

Increased connectivity that improves migration routes for aquatic species, because levees function like wildlife corridors.

Reduced nutrient exchange and altered hydroperiod, decreasing productivity and disrupting life cycles of fish and amphibians.