{"refrec":{"BRefID":3575,"RR":"<b>Daro, M.H.</b> (1978). A simplified <sup>14</sup>C method for grazing measurements on natural planktonic populations. <i>Helgol. Wiss. Meeresunters. 31</i>: 241-248","BEntID":3575,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Helgol. Wiss. Meeresunters. 31</i>: 241-248","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":1,"BrackishFlag":1,"TerrestrialFlag":0,"Authorstring":"Daro, M.H.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Daro, M.H.","Englishabstract":"The method used consists of adding highly radioactive material (40 µCi/l NaH<sup>14</sup>CO<sub>3</sub>) to sea water with its natural concentrations of zoo- and phytoplankton, incubating this water in the light, separating zoo- from phytoplankton after 1h or at the most 2h and measuring the radioactivity of both. Under such conditions, the concentration of the tracer in phytoplankton can be simplified as a linear function of time, and that of the zooplankton as a parabolic function of time. This simplification leads to an overestimation of grazing of at most 2-3%. 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