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More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
Insects make up the vast majority of animal species. [14]Chapman, 2005 and 2009 [9] has attempted to compile perhaps the most comprehensive recent statistics on numbers of extant species, drawing on a range of published and unpublished sources, and has come up with a figure of approximately 1.9 million estimated described taxa, as against possibly a total of between 11 and 12 million ...
0.7-1 million marine species [20] 10–30 million insects; [21] (of some 0.9 million we know today) [22] 5–10 million bacteria; [23] 1.5-3 million fungi, estimates based on data from the tropics, long-term non-tropical sites and molecular studies that have revealed cryptic speciation. [24] Some 0.075 million species of fungi had been ...
Species evenness is the relative number of individuals of each species in a given area. [1] Species richness [2] is the number of species present in a given area. Species diversity [3] is the relationship between species evenness and species richness. There are many ways to measure biodiversity within a given ecosystem.
Of those species that face the threat of extinction, 27% are plants, 24% are invertebrates, and 18% are vertebrates. Up to 2 million species face extinction, study warns Skip to main content
They recognize 5488 species in the class. [1] [2] These lists are not comprehensive, as not all mammals have had their numbers estimated. For example, a live specimen of the spade-toothed whale was first observed in December 2010, and the event only recognized as such in November 2012; no estimate yet exists for the global population. [3]
The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. [2] [3] [4] About 14% of these had been described by 2011. [4] All species (except viruses) are given a two-part name, called a "binomial". The first part of a binomial is the genus to which the species belongs.
Estimates on the number of Earth's current species range from 10 million to 14 million, [12] of which about 1.2 million have been documented and over 86 percent have not yet been described. [13] More recently, in May 2016, scientists reported that 1 trillion species are estimated to be on Earth currently with only one-thousandth of one percent ...