Release date: 2016-05-06
A new analysis of microbiological data estimates that the Earth is home to 1 trillion microbial species, of which only 0.001% are found.
In a new study, researchers from Indiana University in the United States combined a scaling law with a biodiversity model to provide a new estimate of the number of microbial species on Earth: at 10 11 (that is, 100 billion) and 10 12 (that is, 1 trillion). Considering that the number of microbial species currently cataloged is approximately 10 9 , the researchers predict that approximately 99.999% of the microbial species are undetected. The relevant research results were published online in the PNAS journal on May 2, 2016, and the title of the paper is "Scaling laws predict global microbial diversity".
The author of the paper, Jay Lennon, said, “It is one of the major biological challenges to estimate the number of species on Earth. The largest data sets, ecological models and new ones we will have on how to relate biological polymorphisms to abundance The ecological rules that come together are combined. This allows us to make a new and accurate estimate of the number of microbial species on Earth."
The study brought together data from 20,376 surveys of eubacteria, archaea and microfungi from 3 million locations around the world. After confirming that the abundance of the most dominant marine microbial species differs from the total number of individual microbial species by 30 orders of magnitude, the researchers used these data to predict the existence of approximately 10 12 microbial species worldwide.
Simon Malcomber, director of the Biodiversity Scale Program at the National Science Foundation of the United States, said the study "provides a new perspective on the broad diversity of microbes on Earth," "highlighting how much this diversity is still waiting for people to go. Find."
Source: Bio Valley
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