Creation of a new biogeochemical cycle analyzing method with the molecular basis using the isotope effect along food chains

为了探讨碳、氮稳定同位素比值（δ 13 C和δ 15 N）在沿着食物链上的关系，我们分析了Oyashio、暖心环（来自黑潮延伸区）、阿拉斯加湾和南极海洋的数据。统计分析表明，各地区δ 15 N和δ 13 C的斜率具有很强的相似性。我们将这种相似性归因于它们的摄食过程在生理方面的共性（e.例如，在一个实施例中，氨基酸合成过程中固有的动力学同位素效应）。所有区域的共同模式表明，稳定同位素可用于阐明生态系统和地球化学循环的一般模式。

To examine the relationship between carbon and nitrogen stable isotope ratios(δ13C andδ15N) along food chains, we analyzed the data from Oyashio, warm-core ring(derived from the Kuroshio extension region), Gulf of Alaska and Antarctic Ocean. The statistical analysis suggested a strong similarity in slopes ofδ15N versusδ13C among regions. We attributed this similarity to the commonness in physiological aspects of their feeding processes(e. g., the kinetic isotope effects inherent in the processes of amino acid synthesis). The common pattern for all regions suggests that stable isotopes could be used to elucidate general patterns in ecosystems and biogeochemical cycles.