Comparison of 14C and O2 measurements of phytoplankton production in oligotrophic waters
Comparison of 14C and O2 measurements of phytoplankton production in oligotrophic waters
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DOI：
10.1038/305049a0
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发表时间：
1983-09
期刊：
影响因子：
64.8
通讯作者：
P. Williams;K. Heinemann;J. Marra;D. Purdie
中科院分区：
文献类型：
--
作者：
P. Williams;K. Heinemann;J. Marra;D. Purdie
目前对原生浮游植物产量的估计几乎完全来自一种单一方法的结果，即14c技术。14C方法适用于常规测量，对于自养生物量低的大面积海洋也具有必要的灵敏度。然而，对其生态解释仍有很大的不确定性；例如，是衡量净生产还是初级生产总值。我们在此报告了基于14c同化的浮游光合作用与海洋特征的少营养环境的氧通量测量的首次比较。我们从结果中得出结论，在测量总产量时，没有证据表明存在任何尺寸的持续误差，这是14c技术所特有的。我们还推断，从速率本身的考虑，体外方法不偏向于位置合成。
Present day estimates of primary phytoplankton production are derived almost exclusively from the results of a single method, the14C technique.14C methodology is amenable to routine measurement and also has the requisite sensitivity for the large expanses of ocean characterized by low autotrophic biomass. However, there is still great uncertainty as to its ecological interpretations; for example, whether it is measuring net or gross primary production. We report here the first comparison of planktonic photosynthesis based on14C assimilation with measurements of oxygen flux for an oligotrophic environment of ocean character. We conclude from the results that there is no evidence of persistent errors of any size, unique to the14C technique, in the measurement of gross production. We also infer, from a consideration of the rates themselves, thatin vitromethodology is not biased with respect toin situphotosynthesis.