Biodiversity Patterns and Evolutionary Dynamics in the Cape Floristic Region
Summary
The Cape Floristic Region, a compact Mediterranean-climate hotspot at the southern tip of Africa, harbours exceptional plant and animal diversity across disparate habitats. With over 9 000 vascular plant species—more than two-thirds of which are found nowhere else—the region exemplifies both “museum” and “hot-bed” models of biodiversity, combining ancient lineages with recent rapid radiations. Heterogeneous geology and soils, complex topography and a pronounced coast-interior rainfall gradient have generated a mosaic of fynbos, thicket and succulent karoo biomes. Repeated climatic oscillations, fire regimes and sea-level fluctuations have driven cycles of habitat fragmentation and reconnection, promoting both allopatric and adaptive speciation. Key plant clades such as Protea, Erica and Pelargonium showcase bursts of diversification in response to new niches, while endemic insects mirror these patterns through vicariant events linked to coastal uplift. This interplay of edaphic variation, geological uplift and climatic change underpins evolutionary dynamics in the Cape, making it a global model for studying drivers of biodiversity, informing conservation planning and guiding restoration efforts under future climate scenarios.
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Biodiversity Patterns and Evolutionary Dynamics in the Cape Floristic Region publication trend
The graph below shows the total number of articles in biodiversity patterns and evolutionary dynamics in the cape floristic region across all publications each year (not limited to Nature Index journals).
Technical terms
Endemism: Occurrence of species restricted to a defined geographic area.
Adaptive radiation: Rapid diversification of a lineage into a variety of ecological niches.
Phylogeny: Evolutionary history and relationships among species or groups.
Allopatric speciation: Formation of new species through geographic isolation of populations.
Edaphic: Relating to soil characteristics that influence plant distribution and ecology.
References
- The biodiversity hotspot as evolutionary hot-bed: spectacular radiation of Erica in the Cape Floristic Region. BMC Ecology and Evolution (2016).
- Dated Plant Phylogenies Resolve Neogene Climate and Landscape Evolution in the Cape Floristic Region. PLOS ONE (2015).
- Plastome based phylogenetics and younger crown node age in Pelargonium. Molecular Phylogenetics and Evolution (2019).
- Late Cenozoic environmental changes drove the diversification of a weevil genus endemic to the Cape Floristic Region. Zoologica Scripta (2022).
- Global hotspots in the present-day distribution of ancient animal and plant lineages. Scientific Reports (2015).
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