Estimated number of tree species in the tropics

Range ~40,000 - ~53,000 Table - link species
Organism Biosphere
Reference Slik JW. et al., An estimate of the number of tropical tree species. Proc Natl Acad Sci U S A. 2015 Jun 16 112(24):7472-7. doi: 10.1073/pnas.1423147112. abstract & p.7474 table 1PubMed ID26034279
Method p.7473 left column 5th paragraph:"[Investigators] estimate the number of tropical tree species from a standardized dataset of old-growth tropical forest tree inventories, including gymno- and angiosperms with diameters at breast height (dbh) =10 cm. This dataset contains tree species abundance data for 207 1° grid cells (locations) originally dominated by closed-canopy forests across the tropics (Fig. 1). By calculating Fisher’s alpha (ref 16) at the pantropical scale and combining this value with the estimated potential number of stems present within 500 km of each location, [investigators] arrive at a minimum number of tropical tree species of at least ~40,000 and possibly more than ~53,000 (Table 1), i.e., at the high end of current total estimates of 37,000 (ref 7), 43,000 (ref 8) and 50,000 (ref 6), which are based on expert opinion."
Comments See note beneath table
Entered by Uri M
ID 111614