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Property Organism Value Units ID Details
Number of rod-shaped bacterial cells in small, filamentous, or stellate chains that survive Ochromonas predation Nanoflagellate Ochromonas spp. ≤900 cells per chain 115657 Young KD. The selective...
Effects of the diet on the rumen fermentation, absolute abundance, and alpha diversity of the main microbial groups in sheep Sheep Ovis aries Table - link N/A 117088 Belanche et al., A M...
Number of times bacteria <0.5µm in diameter encounter grazing protists compared to larger bacterial cells (~1µm) Biosphere 4 -6 times left often 115626 Young KD. The selective...
Concentration of bacteria in rumen before and 4-8 weeks after defaunation Sheep Ovis aries before 4.1×10^9: after 1.75×10^10 bacteria/ml 112579 Orpin, C. G., & Letcher...
Data on DNA content, cell volume and minimum doubling time for twelve species of ciliates Ciliate spp. Table - link N/A 110493 B. J. Shuter, J. E. Thomas...
Length of bacterial cell filaments that can be grazed by mixotrophic nanoflagellate Ochromonas Nanoflagellate Ochromonas spp. ≤14 µm 115656 Young KD. The selective...
Mean DNA content by mass in protozoan cell Eukaryotes 3.2 fg DNA/cell 105853 Dell'Anno A, Danovaro...
Rumen temperature Ruminants 38 to 42 ˚C 112825 Yokoyama MG, Johnson...
Length of eukaryotic cilia Frog Xenopus tropicalis 6 (±1) µm 105112 Neugebauer JM, Amack JD...
Relative number and biomass of microbial species at 0–6 inches (0–15 cm) depth of soil Various Table - link N/A 106622 James J. Hoorman & Rafiq...
Number of species of known living organisms Biosphere Table - link N/A 105404 J.J.R. Fraústo da Silva...
Currently (as of 2011) catalogued and predicted total number of species on Earth and in the ocean Biosphere Table - link species 109317 Mora C, Tittensor DP...
Reconstructed sugar utilization pathways and newly assigned genes in Shewanella spp. Bacteria Shewanella spp. Table - link N/A 107281 Rodionov DA et al., Genomic...
Metabolic rates in prokaryotes and unicellular eukaryotes Microbes Table - link N/A 105785 Makarieva AM, Gorshkov VG...
Approximate composition of gas mixture in the rumen Ruminants CO2 65%: CH4 27%: N2 7%: O2 0.6%: H2 0.2%: H2S 0.01% % 112823 Yokoyama MG, Johnson...
Tangential velocity of swimming (fastest prokaryotic swimmer known) Bacteria Thiovulum spp. 150 – 600 μm/sec 110076 Schulz HN, Jorgensen...
Fraction of total bacterial mortality in various aquatic ecosystems that phages are responsible for Biosphere 10 - 80 % 112500 Letarov A, Kulikov E....
Number of human pathogens Various 1407 (538 bacteria: 317 fungi: 287 helminths: 208 viruses or prions: 57 protozoa) Pathogenic species 106626 Mark Woolhouse, Sonya...
Mean metabolic rates in prokaryotes prokaryote In rest 8: In growth 190 Table - link W/kg 105786 Makarieva AM, Gorshkov VG...
Number of species catalogued in a central database as of 2011 Biosphere ~1.2e6 species 109316 Mora C, Tittensor DP...