Ever wonder how many species are sharing this Earth? Apparently it’s 8.7 million, give or take a few. This takes into account the few thousand plant or marine species we haven’t discovered yet or documented. Via Physorg:
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 today 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 lead author Camilo Mora of the University of Hawaii and Dalhousie University in Halifax, Canada: “The question of how many species exist has intrigued scientists for centuries and the answer, coupled with research by others into species’ distribution and abundance, is particularly important now because a host of human activities and influences are accelerating the rate of extinctions. Many species may vanish before we even know of their existence, of their unique niche and function in ecosystems, and of their potential contribution to improved human well-being.”
[Continues at Physorg]