How many species are there on Earth? Progress and problems

by John J. Wiens How many species exist on Earth? Projections range from millions to trillions. A 2011 paper in PLOS Biology provided a comprehensive estimate of 9 million. How many species are there on Earth? Projections have ranged from the millions to the trillions. This Perspective looks at how a 2011 PLOS Biology study transformed this field and what is still to be done to find a definitive answer.

https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3002388

Source: PLoS Biology: Archived Table of Contents - November 20, 2023 Category: Biology Authors: John J. Wiens Source Type: research

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