Ecological Impacts of Climate Change and Ecological Adaptation

Climate change is reshaping ecosystems at every scale, from genetic variation within populations to biome-wide community assembly. Rising temperatures and altered precipitation regimes drive shifts in species’ geographic ranges, often beyond their dispersal capacities, and fragment once-continuous habitats. These changes disrupt phenological synchrony among interacting taxa, weaken ecological networks and erode ecosystem services such as carbon sequestration, water regulation and pollination. In response, both natural populations and human societies are exhibiting signs of ecological adaptation—from the emergence of climate-tolerant genotypes to the implementation of dynamic conservation and land-use strategies. However, the pace and magnitude of climatic change frequently outstrip the capacity of species to adapt in situ, placing a premium on identifying and managing climate refugia, facilitating adaptive gene flow and developing transformative adaptation pathways. Advances in modelling, from genotype–environment associations to ensemble species-distribution forecasts, provide new tools to predict vulnerability hot-spots and to design interventions that bolster resilience across social-ecological systems.

Research from Nature Portfolio

Whole-genome resequencing of European beech has revealed that, despite high phenotypic plasticity, fine-scale genotype–environment associations pinpoint a limited set of genomic regions involved in adaptation to winter temperatures and spring phenology. These insights underscore a polygenic basis of climate response and illustrate how spatial resolution influences the detection of adaptive signals. In the Australian Wet Tropics, hybrid populations of rainbowfish formed between widespread generalists and range-restricted endemics exhibit reduced genomic vulnerability to projected climate change. Overlaps between introgressed and adaptive genomic regions suggest that adaptive introgression can serve as an evolutionary rescue mechanism in warming environments. Complementing these findings, chromosome-scale assembly and population resequencing of the temperate forest tree Populus koreana uncovered climate-associated single-nucleotide polymorphisms and structural variants. When incorporated into environmental models, these variants enable refined projections of range shifts and prioritise vulnerable populations for conservation and breeding programmes.

Ecological Impacts of Climate Change and Ecological Adaptation publication trend

The graph below shows the total number of articles in ecological impacts of climate change and ecological adaptation across all publications each year (not limited to Nature Index journals).

Technical terms

Species distribution model (SDM): A quantitative tool that relates species’ occurrence records to environmental predictors to estimate current or future geographic ranges.

Genotype–environment association (GEA): A statistical correlation between genetic variants and environmental variables that indicates potential loci under selection.

Climate refugia: Areas that remain relatively buffered from rapid climate change and provide long-term habitat stability for vulnerable species.

Adaptive introgression: The incorporation of beneficial genetic variants from one population or species into another through hybridisation, enhancing adaptive capacity.

Ecological integrity: The extent to which an ecosystem’s composition, structure and functioning reflect those of natural, undisturbed systems, supporting resilience under changing conditions.

References

1. Genomic variation of European beech reveals signals of local adaptation despite high levels of phenotypic plasticity. Nature Communications (2024).
2. Natural hybridization reduces vulnerability to climate change. Nature Climate Change (2023).
3. Genomic insights into local adaptation and future climate-induced vulnerability of a keystone forest tree in East Asia. Nature Communications (2022).
4. A resilient and connected network of sites to sustain biodiversity under a changing climate. Proceedings of the National Academy of Sciences of the United States of America (2023).
5. Priorities for embedding ecological integrity in climate adaptation policy and practice. One Earth (2023).
6. Between theory and action: Assessing the transformative character of climate change adaptation in 51 cases in the Netherlands. Global Environmental Change (2024).