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Property Organism Value Units ID Details
Axon diameter in the optic nerve North American opossum Didelphis virginiana myelinated 0.3-6.7µm (mean 1.6µm): unmyelinated 0.2-1.6µm (mean 0.6µm) µm 112118 Kirby MA, Clift-Forsberg L...
Diameter of myelinated and unmyelinated axons in central nervous system (CNS) (but size spectra of myelinated and unmyelinated axons overlap considerably) Metazoa animals myelinated 0.2: unmyelinated ≤0.8 µm 114487 Hildebrand C, Remahl S...
Net population change in North American birds Biosphere Table - link % change since 1970 117281 Rosenberg KV et al.,...
Time of radiation across the North American continent from a European ancestor Butterfly Limenitis spp. during the past 3 - 4 million years 117176 Frentiu FD, Briscoe AD....
Net change in abundance across North American bird families, 1970-2017 Biosphere Table - link N/A 117283 Rosenberg KV et al.,...
Gains and losses across the North American avifauna over the last half century Biosphere Table - link N/A 117280 Rosenberg KV et al.,...
Net change in abundance across the North American avifauna, 1970-2017 Biosphere Table - link N/A 117282 Rosenberg KV et al.,...
Decrease in bird population size in North America since 1970 Biosphere 29 % 117279 Rosenberg KV et al.,...
Estimated time range of diversification of human and opossum (marsupials and placentals) Mammals 124.3e+6 - 138.4e+6 years 105154 Donoghue PC, Benton MJ....
Interspecific variability in needle structural and chemical characteristics in 3 pine species Plants Table - link N/A 107379 Niinemets U, Ellsworth DS...
List of non-human animals with publications on their genome projects as of 2012 Metazoa animals Table - link Mb 112712 Luting Song & Wen Wang...
Number of receptors and ganglion cells per visual degree (pvd) American kestrel Falco sparverius receptors pvd in the central fovea 8300: receptors pvd in the temporal fovea 7700: ganglion cells pvd in the central fovea 3000: ganglion cells pvd in the temporal fovea 700 receptors or ganglion cells/visual degree 117192 Bringmann A. Structure...
Fraction of inorganic carbon in the mesopelagic western North Atlantic that is fixed by Nitrospinae Bacteria Nitrospinae spp. 15 - 45 % 115201 Pachiadaki MG et al....
Fraction of biomass & gross primary production that Prochlorococcus accounts for in central North Pacific Biosphere 64% of biomass: ≤44% of gross primary production % 112063 Liu, H.B. Nolla, H.A....
Assimilation rate of bacterioplankton biomass by small-size algae in the North Atlantic Ocean Small (~2um) photosynthetic protists 0.12-0.38 bacterioplankton cells per protist cell per hour 113498 MV Zubkov & GA Tarran...
Concentration of marine picoplankton collected in Alaska and North Sea Bacterioplankton 0.11×10^9-1.07×10^9 cells/ml 105119 Schut F, de Vries EJ...
Concentration of heterotrophic protists in euphotic layer of the temperate North Atlantic Ocean Heterotrophic protists 510 (±370) cells/ml 113500 MV Zubkov & GA Tarran...
Fraction of light-stimulated leucine incorporation in the North Atlantic Ocean that Prochlorococcus is responsible for Prochlorococcus >75 % 110356 D. L. Kirchman, Microbial...
Gastric pH fasted and after meal ingestion Human Homo sapiens fasted 1.7: fed 5.0 unitless 110514 McConnell EL, Basit AW...
DNA content in marine picoplankton collected in Alaska and the North Sea Bacterioplankton 2.5-4.7 fg/cell 105118 Schut F, de Vries EJ...