Gembloux Agro-Bio Tech, University of Liege, 5030 Gembloux, Belgium.
School of GeoSciences, University of Edinburgh, Edinburgh EH8 9YL, United Kingdom.
Proc Natl Acad Sci U S A. 2022 Apr 5;119(14):e2112336119. doi: 10.1073/pnas.2112336119. Epub 2022 Mar 29.
SignificanceOur full-scale comparison of Africa and South America's lowland tropical tree floras shows that both Africa and South America's moist and dry tree floras are organized similarly: plant families that are rich in tree species on one continent are also rich in tree species on the other continent, and these patterns hold across moist and dry environments. Moreover, we confirm that there is an important difference in tree species richness between the two continents, which is linked to a few families that are exceptionally diverse in South American moist forests, although dry formations also contribute to this difference. Plant families only present on one of the two continents do not contribute substantially to differences in tree species richness.
意义
我们对非洲和南美洲低地热带树木区系的全面比较表明，非洲和南美洲的湿润和干燥树木区系的组织方式相似：在一个大陆上物种丰富的植物科在另一个大陆上也同样丰富，而且这种模式在湿润和干燥的环境中都成立。此外，我们证实，这两个大陆的树种丰富度存在重要差异，这与南美湿润森林中一些特别多样化的科有关，尽管干燥的地层也促成了这种差异。只存在于两个大陆之一的植物科对树种丰富度的差异没有显著贡献。
