Number of protozoa species catalogued in a central database as of 2011 and number of predicted species on Earth

Range Catalogued ~8,100 Predicted ~36,400 Table - link Species
Organism Protists
Reference Mora C, Tittensor DP, Adl S, Simpson AG, Worm B. How many species are there on Earth and in the ocean? PLoS Biol. 2011 Aug9(8):e1001127. doi: 10.1371/journal.pbio.1001127 p.5 table 2PubMed ID21886479
Method "[Researchers] accounted for undiscovered higher taxa by fitting, for each taxonomic level from phylum to genus, asymptotic regression models to the temporal accumulation curves of higher taxa (Figure 1A–1E) and using a formal multimodel averaging framework based on Akaike’s Information Criterion [23] to predict the asymptotic number of taxa of each taxonomic level (dotted horizontal line in Figure 1A–11E see Materials and Methods for details)."
Entered by Uri M
ID 109321