1. Mangrove Swamps

2. Distribution
Mangroves are present from 30°N to 40°S, virtually circling the globe
Thought to have first evolved in SE Asia
Mangrove swamps occur along shallow ocean shorelines and estuaries
Examples in the US can be found from Florida westward to Texas

3. Benefits of a Mangrove Swamp
Provides structure to prevent erosion
Structure also serves as nursery areas for many fish and animal species as well as crabs and shrimp
Acts as filtration system for runoff and river drainage
Mangrove trees can provide essential products for developing countries

4. Current Status of Mangrove Swamps
Mangrove swamps are on the decline – 32% reduction in total acreage in the last 20 years
If the current rate of decline is allowed to continue, all the mangroves will be gone within 50 years
Major factors for the decline:
Coastal development
Ignorance of the importance of the ecosystem they create
Pollution, especially petrol-chemical
Increased hurricanes and tsunamis