An Estimate of the Total DNA in the Biosphere.
An Estimate of the Total DNA in the Biosphere.
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DOI:
10.1371/journal.pbio.1002168
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发表时间:
2015-06
期刊:
影响因子:
9.8
通讯作者:
Cockell CS
中科院分区:
文献类型:
--
作者:
Landenmark HK;Forgan DH;Cockell CS
Modern whole-organism genome analysis, in combination with biomass estimates, allows us to estimate a lower bound on the total information content in the biosphere: 5.3 × 1031 (±3.6 × 1031) megabases (Mb) of DNA. Given conservative estimates regarding DNA transcription rates, this information content suggests biosphere processing speeds exceeding yottaNOPS values (1024 Nucleotide Operations Per Second). Although prokaryotes evolved at least 3 billion years before plants and animals, we find that the information content of prokaryotes is similar to plants and animals at the present day. This information-based approach offers a new way to quantify anthropogenic and natural processes in the biosphere and its information diversity over time. The diversity of life on Earth is typically considered in terms of the total number of species. However, this essay, by estimating the total amount of DNA in the biosphere at 5.4 x 1031 megabases, offers an information-based view of biodiversity.
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