title: Pragmatic criteria to distinguish psychrophiles and psychrotrophs in ecological systems.
abstract: Optimal incubation times and temperatures were determined for populations of psychrophilic and psychrotrophic bacteria from a seasonally cold ocean. The application of conventional pragmatic criteria did not differentiate the two populations, although they could be distinguished by growth at two temperatures.
mesh_terms: D001419:Bacteria / Q000254:growth & development*; D003080:Cold Temperature; D012623:Seawater; D014871:Water Microbiology