Median of nearly constant heat production obtained when heat production is normalized to biomass

Value 0.037 pW/pgC Range: 0.022 to 0.061 Table - link pW/pgC
Organism Protists
Reference Johnson MD, Völker J, Moeller HV, Laws E, Breslauer KJ, Falkowski PG. Universal constant for heat production in protists. Proc Natl Acad Sci U S A. 2009 Apr 21 106(16):6696-9 p.6697 left column top paragraph and table 1PubMed ID19346469
Method Using high-precision microcalorimetry in a differential scanning mode, researchers measured direct heat production at a constant temperature, against a background signal of culture medium, from five phyla (three kingdoms) of eukaryotic protists spanning more than 5 orders of magnitude in carbon biomass, and representing a large range of cell densities, sizes, and total cell carbon (Table 1).
Comments When heat production is normalized to biomass (pW/pgC), a nearly constant heat production is obtained for all cells (Kruskal-Wallis test, P=0.09), with a median of 0.037 pW/pgC and a 95% confidence interval (CI) of 0.022–0.061 pW/pgC.
Entered by Uri M
ID 107956