Summary
This cross-biogeographic analysis of 463 tree genera demonstrates that fast life-history strategies (elevated mortality rates, smaller maximum diameter, in some regions dioecious breeding) are associated with larger geographic ranges and, in turn, higher species richness in lowland wet tropical forests. The work suggests dispersal capacity and ecological strategy have been fundamental drivers of tropical forest floristic diversity evolution. The findings are based on comparative analysis of lineage traits rather than experimental manipulation.
Regional applicability
This is a global tropical ecology study with no direct application to United Kingdom agriculture or forestry. However, the mechanistic insights on how life-history traits influence dispersal and diversification in high-diversity ecosystems may inform understanding of woodland and forest management strategies in similar climatic contexts, though UK temperate systems differ substantially in floristic composition and ecological drivers.
Key measures
Mortality rates, breeding system, maximum diameter, lineage range size, species richness per genus, species-level range sizes
Outcomes reported
The study examined associations between tree lineage traits (mortality rate, breeding system, maximum diameter) and species richness across 463 genera of lowland wet tropical forest trees. Results show that faster life-history strategies (higher mortality rates) correlate with larger range sizes and higher species richness across biogeographic settings.
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