Mapping ecoregional vulnerability to climate change for Africa

Area of Science:

• Ecology
• Climate Change Science
• Conservation Biology

Background:

• African ecosystems face significant threats from climate change, necessitating robust assessment tools for effective environmental management.
• Understanding ecoregional vulnerability is crucial for prioritizing conservation efforts in the face of changing climatic conditions.

Purpose of the Study:

• To develop and apply a framework for assessing ecoregional vulnerability to climate change in Africa.
• To identify specific ecoregions at high risk and pinpoint areas requiring targeted conservation interventions.

Main Methods:

• Assessed environmental exposure using climate projections (dry days, precipitation, temperature).
• Determined sensitivity based on forest fragmentation and grassland degradation.
• Represented adaptive capacity using protected area networks and biodiversity intactness.

Main Results:

• Under the SSP5 8.5 scenario, 16% of ecoregions face high climate change impact by 2050.
• Vulnerable areas identified include Montane forest-grassland and flooded savanna ecoregions.
• Impacted ecoregions are disproportionately biodiverse, highlighting urgent conservation needs.

Conclusions:

• The developed framework effectively identifies vulnerable ecoregions and guides conservation strategies.
• Integrating climate impact and adaptive capacity assessments is key to enhancing ecoregional resilience.
• Targeted conservation actions are essential in biodiverse, high-risk areas to mitigate climate change effects.