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Proc Natl Acad Sci U S A ; 112(24): 7472-7, 2015 Jun 16.
Artículo en Inglés | MEDLINE | ID: mdl-26034279

RESUMEN

The high species richness of tropical forests has long been recognized, yet there remains substantial uncertainty regarding the actual number of tropical tree species. Using a pantropical tree inventory database from closed canopy forests, consisting of 657,630 trees belonging to 11,371 species, we use a fitted value of Fisher's alpha and an approximate pantropical stem total to estimate the minimum number of tropical forest tree species to fall between ∼ 40,000 and ∼ 53,000, i.e., at the high end of previous estimates. Contrary to common assumption, the Indo-Pacific region was found to be as species-rich as the Neotropics, with both regions having a minimum of ∼ 19,000-25,000 tree species. Continental Africa is relatively depauperate with a minimum of ∼ 4,500-6,000 tree species. Very few species are shared among the African, American, and the Indo-Pacific regions. We provide a methodological framework for estimating species richness in trees that may help refine species richness estimates of tree-dependent taxa.


Asunto(s)
Biodiversidad , Bosques , Árboles , Clima Tropical , Conservación de los Recursos Naturales , Bases de Datos Factuales , Ecosistema , Filogeografía , Bosque Lluvioso , Especificidad de la Especie , Estadísticas no Paramétricas , Árboles/clasificación
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