Slope of log carbon versus log volume for 8 protists

Value 0.67 N/A Range: 0.60 to 0.73
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 columnPubMed 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 The slope of log carbon versus log volume for the protists researchers studied is low (0.67, with a 95% CI of 0.60–0.73) compared with the corresponding slopes for diverse phytoplankton, which range between 0.71 (ref 19) and 0.991 (ref 20).
Entered by Uri M
ID 107957