Skwim
Veteran Member
"Eight million, seven hundred thousand (give or take 1.3 million).
That is a new, estimated total number of species on Earth -- the most precise calculation ever offered -- with 6.5 million species found on land and 2.2 million (about 25 percent of the total) dwelling in the ocean depths.
Announced today by Census of Marine Life scientists, the figure is based on an innovative, validated analytical technique that dramatically narrows the range of previous estimates. Until now, the number of species on Earth was said to fall somewhere between 3 million and 100 million.
Furthermore, the study, published by PLoS Biology, says a staggering 86% of all species on land and 91% of those in the seas have yet to be discovered, described and catalogued.
Says Dr. Adl: "We discovered that, using numbers from the higher taxonomic groups, we can predict the number of species. The approach accurately predicted the number of species in several well-studied groups such as mammals, fishes and birds, providing confidence in the method."
When applied to all five known eukaryote* kingdoms of life on Earth, the approach predicted:
1) ~7.77 million species of animals (of which 953,434 have been described and cataloged)
2) ~298,000 species of plants (of which 215,644 have been described and cataloged)
3) ~611,000 species of fungi (moulds, mushrooms) (of which 43,271 have been described and cataloged)
4) ~36,400 species of protozoa (single-cell organisms with animal-like behavior, eg. movement, of which 8,118 have been described and cataloged)
5) ~27,500 species of chromista (including, eg. brown algae, diatoms, water moulds, of which 13,033 have been described and cataloged)
Total: 8.74 million eukaryote species on Earth."
source
And god needed 8,700,000 ± different kinds of life because . . . . . . . . ?Whoa, talk about overcrowding!!
Announced today by Census of Marine Life scientists, the figure is based on an innovative, validated analytical technique that dramatically narrows the range of previous estimates. Until now, the number of species on Earth was said to fall somewhere between 3 million and 100 million.
Furthermore, the study, published by PLoS Biology, says a staggering 86% of all species on land and 91% of those in the seas have yet to be discovered, described and catalogued.
Says Dr. Adl: "We discovered that, using numbers from the higher taxonomic groups, we can predict the number of species. The approach accurately predicted the number of species in several well-studied groups such as mammals, fishes and birds, providing confidence in the method."
When applied to all five known eukaryote* kingdoms of life on Earth, the approach predicted:
1) ~7.77 million species of animals (of which 953,434 have been described and cataloged)
2) ~298,000 species of plants (of which 215,644 have been described and cataloged)
3) ~611,000 species of fungi (moulds, mushrooms) (of which 43,271 have been described and cataloged)
4) ~36,400 species of protozoa (single-cell organisms with animal-like behavior, eg. movement, of which 8,118 have been described and cataloged)
5) ~27,500 species of chromista (including, eg. brown algae, diatoms, water moulds, of which 13,033 have been described and cataloged)
Total: 8.74 million eukaryote species on Earth."
source