Sensitivity analysis of conservation targets in systematic conservation planning

Area of Science:

• Conservation Biology
• Ecosystem Management
• Spatial Planning

Background:

• Systematic conservation planning relies on quantitative conservation targets.
• Uniform targets like 17% protected area may not ensure species persistence.
• Lack of species-specific data often leads to arbitrary target setting.

Purpose of the Study:

• To develop a novel method for guiding conservation target selection.
• To enhance decision-making support for conservation planners and managers.
• To assess and improve the flexibility of conservation networks.

Main Methods:

• Examined conservation network flexibility using Marxan software.
• Applied the method to marine conservation in the eastern Mediterranean Sea.
• Compared 80 scenarios with gradually increasing conservation targets.

Main Results:

• Low targets (<10%) resulted in poorly defined, irreplaceable conservation networks.
• High targets (>50%) led to infeasibly large numbers of irreplaceable areas.
• Optimal network flexibility was achieved when 10-20% of the area was irreplaceable (selection frequency >90%).

Conclusions:

• The proposed method provides a sensitivity analysis for target-based conservation planning.
• Adequate network flexibility is crucial for effective conservation outcomes.
• This approach supports managers and decision-makers in creating robust protected area networks.