Climate Change Vulnerability Assessment in Biodiversity

Climate change vulnerability assessment in biodiversity encompasses a suite of approaches designed to identify and quantify how species and ecosystems respond to changing climatic conditions. Central to this field is a tripartite framework—exposure, sensitivity and adaptive capacity—that together define a species’ overall vulnerability. Exposure gauges the magnitude of climatic shifts experienced, sensitivity reflects inherent biological traits that influence susceptibility, and adaptive capacity describes the potential for behavioural, genetic or distributional adjustment. Methodologies range from trait-based scoring systems and ecological niche modelling to spatially explicit life-cycle impact assessments and safety-margin analyses. These tools have been applied across terrestrial, freshwater and marine realms to map hotspots of risk, prioritise conservation interventions and inform policy on protected area expansion, assisted migration and emission mitigation. By integrating diverse data sources—remote sensing, species inventories, climate projections and expert elicitation—vulnerability assessments now support decision-making at scales from local management to global agreements, highlighting areas where conservation actions can yield greatest co-benefits for biodiversity and climate resilience.

Research from Nature Portfolio

Recent studies have quantified safety margins and adaptive capacity across vegetation communities, calculating tolerance thresholds for warming and drying to reveal regions at disproportionate risk under future climate scenarios. Another framework has separated species’ exposure from their sensitivity by analysing climatic projections alongside intrinsic tolerance limits, demonstrating that high exposure does not always coincide with high sensitivity and emphasising the need to treat these dimensions independently. A further comparative evaluation of scoring schemes showed that incorporating adaptive capacity into vulnerability assessments can shift the classification of certain species, underscoring the importance of comprehensive metrics in prioritising conservation targets.

Climate Change Vulnerability Assessment in Biodiversity publication trend

The graph below shows the total number of articles in climate change vulnerability assessment in biodiversity across all publications each year (not limited to Nature Index journals).

Technical terms

Vulnerability: Composite measure of risk to species or ecosystems from climate change, encompassing exposure, sensitivity and adaptive capacity.

Exposure: Degree of climatic change experienced by a species or location.

Sensitivity: Intrinsic biological traits determining a species’ susceptibility to climate stressors.

Adaptive capacity: Ability of a species or community to adjust to climate change through genetic, behavioural or distributional responses.

Climate refugia: Areas projected to maintain suitable climatic conditions for current species assemblages under future warming.

Characterisation factor: Metric quantifying the potential impact of a greenhouse gas emission on biodiversity, accounting for spatial and taxonomic variation.

References

1. Spatially and taxonomically explicit characterisation factors for greenhouse gas emission impacts on biodiversity. Resources Conservation and Recycling (2023).
2. Biodiversity losses associated with global warming of 1.5 to 4 °C above pre-industrial levels in six countries. Climatic Change (2024).
3. Identifying the World's Most Climate Change Vulnerable Species: A Systematic Trait-Based Assessment of all Birds, Amphibians and Corals. PLOS ONE (2013).
4. Towards an Integrated Framework for Assessing the Vulnerability of Species to Climate Change. PLOS Biology (2008).
5. Separating sensitivity from exposure in assessing extinction risk from climate change. Scientific Reports (2014).
6. Safety margins and adaptive capacity of vegetation to climate change. Scientific Reports (2019).
7. Influence of adaptive capacity on the outcome of climate change vulnerability assessment. Scientific Reports (2017).