Managing Climate Extremes and Disasters for Ecosystems: Lessons from the IPCC SREX Report

The document highlights the critical role of healthy ecosystems in reducing the impacts of climate extremes and disasters. It argues that ecosystem-based adaptation (EbA) is often a more cost-effective and accessible strategy than hard engineering, providing co-benefits for livelihoods and biodiversity. The brief details how climate extremes—such as heat waves, droughts, and floods—can lead to species extinction, regime shifts in ecosystems, and the transformation of carbon sinks into sources. It emphasizes that disaster risk is driven not only by climate events but by vulnerability and exposure resulting from skewed development. The report advocates for a paradigm shift toward transformational changes in governance and the integration of disaster risk management (DRM) with climate change adaptation (CCA) to build long-term resilience.

• Healthy ecosystems are essential for reducing the impacts of climate extremes and disasters on human society, providing critical adaptation services.
• Ecosystem-based adaptation (EbA) is frequently more cost-effective than hard infrastructure and engineering solutions and is more accessible to the rural poor.
• Climate extremes can cause severe ecological damage, including a risk of extinction for 20% to 30% of studied plant and animal species if warming exceeds 2 to 3°C above pre-industrial levels.
• Extreme heat waves can reverse the carbon sequestration capacity of ecosystems, turning them into net sources of CO2; for example, a 2003 heat wave in Europe caused an unprecedented reduction in primary productivity.
• Disaster risk is increasing in many countries regardless of climate change because more vulnerable people and assets are being exposed to climate extremes.
• High vulnerability and exposure are typically the result of flawed development processes, including failed governance, unplanned urbanisation, and environmental mismanagement.
• Increasing biological diversity enhances the resilience of an entire system by allowing for a wider range of responses to hazards.
• Economic losses from weather and climate disasters are increasing globally, with fatality rates and losses as a proportion of GDP being higher in developing countries.

APA

Cameron, C., Norrington-Davies, G., & Back, E. (2012). Managing Climate Extremes and Disasters for Ecosystems: Lessons from the IPCC SREX Report. Climate and Development Knowledge Network. http://cdkn.org/wp-content/uploads/2012/10/SREX-lessons-for-ecosystems.pdf

Chicago

Cameron, Catherine, Gemma Norrington-Davies, and Emma Back. Managing Climate Extremes and Disasters for Ecosystems: Lessons from the IPCC SREX Report. Climate and Development Knowledge Network, 2012. http://cdkn.org/wp-content/uploads/2012/10/SREX-lessons-for-ecosystems.pdf.

Wikipedia

{{cite report |last1=Cameron |first1=Catherine |last2=Norrington-Davies |first2=Gemma |last3=Back |first3=Emma |title=Managing Climate Extremes and Disasters for Ecosystems: Lessons from the IPCC SREX Report |publisher=Climate and Development Knowledge Network |date=2012 |url=http://cdkn.org/wp-content/uploads/2012/10/SREX-lessons-for-ecosystems.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{cameron2012managing, author = {Cameron, Catherine and Norrington-Davies, Gemma and Back, Emma}, title = {{Managing Climate Extremes and Disasters for Ecosystems: Lessons from the IPCC SREX Report}}, institution = {Climate and Development Knowledge Network}, year = {2012}, url = {http://cdkn.org/wp-content/uploads/2012/10/SREX-lessons-for-ecosystems.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }