Does mangrove vegetation structure reflect human utilization of ecosystem goods and services?

Area of Science:

• Ecology and Conservation
• Coastal Ecosystem Management

Background:

• Coastal communities in developing nations heavily depend on mangrove ecosystem services (ES).
• Mangrove ecosystems worldwide face significant threats from both human activities and environmental changes.

Purpose of the Study:

• To investigate the relationship between the utilization of mangrove ecosystem services and mangrove forest structure in Ghana's Ankobra catchment.
• To assess the impact of harvesting practices on mangrove forest complexity and regeneration.

Main Methods:

• Conducted vegetation surveys to analyze forest structure, including tree stocking and sapling densities.
• Performed interviews in five communities to understand the primary uses of harvested mangrove wood.
• Assessed the influence of selective logging, branch cutting, water stress, and fern density on mangrove structure.

Main Results:

• Selective logging, branch cutting, water stress, and *Acrostichum aureum* density significantly affected tree and sapling densities.
• Approximately 98% of harvested mangrove wood is used for fuelwood and 88% for construction.
• Areas with high harvesting pressure exhibited less complex vegetation structure, lower tree/sapling density, and fewer seed-bearing trees compared to less-disturbed areas.

Conclusions:

• Current mangrove harvesting regulations are often not strictly enforced due to community needs.
• Understanding these impacts is crucial for developing effective management strategies.
• Improved management can help meet community needs while reducing pressure on vulnerable mangrove ecosystems.