Prioritizing wetland restoration for sediment yield reduction: a conceptual model

Area of Science:

• Ecological restoration
• Environmental management
• Watershed science

Background:

• Limited resources necessitate geographic prioritization of wetland restoration efforts.
• The synoptic approach offers an ecologically based tool for prioritizing wetland protection and restoration.
• This approach integrates professional judgment when data and resources are scarce.

Purpose of the Study:

• To develop a conceptual model for prioritizing watersheds for wetland restoration aimed at reducing sediment yield.
• To rank watersheds based on their potential for sediment reduction through wetland restoration.

Main Methods:

• The study utilizes a synoptic approach, which involves calculating functional criteria indices for regional subunits.
• Subunits (watersheds) are ranked based on these indices to identify priority areas for restoration.
• The model focuses on ranking entire watersheds, not individual wetlands within them.

Main Results:

• A conceptual model was developed for prioritizing wetland restoration to decrease watershed sediment yield.
• The model is designed for planning and prioritizing multiple decisions, acknowledging low consequence for prioritization errors.
• Results guide judgment based on scientific principles and ecological understanding.

Conclusions:

• The developed conceptual model is a foundational step for prioritizing wetland restoration for sediment yield reduction in US EPA Region 4.
• The synoptic approach is suitable for prioritizing disturbed wetlands due to limited data and high restoration demand.
• The model provides a framework for informed decision-making in resource-limited environmental management scenarios.