NITROGEN AND CARBON ISOTOPE COMPOSITIONS RELATE LINEARLY IN CORMORANT TISSUES AND ITS DIET
NITROGEN AND CARBON ISOTOPE COMPOSITIONS RELATE LINEARLY IN CORMORANT TISSUES AND ITS DIET
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DOI：
10.1080/10256019108622500
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发表时间：
1991-01-01
期刊：
影响因子：
--
通讯作者：
WADA, E
中科院分区：
文献类型：
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作者：
MIZUTANI, H;KABAYA, Y;WADA, E
要将生物元素的稳定同位素分布应用于生态地球化学和考古研究，需要对现有的野外样本和饮食之间的关系有准确的了解。由于鸟类的性质使得建立一个同位素定义明确的实验成为可能，因此研究了鹈鹕不同组织和其固定饮食之间的氮和碳同位素关系。这些组织是在23年多的时间里吃同样的食物后收集的。饲料和组织的两个稳定同位素比值呈高度相关(r=0.92)。线性回归分析得出斜率为1.1。在所检测的组织中，皮肤对N-15(4.8‰)和C-13(4.2‰)的浓缩程度最高，而大脑的浓缩程度最低(N-15为0.8‰，C-13为1.1‰)。
An application of stable isotope distribution of bioelements to ecogeochemical and archaeological studies requires precise knowledge on the relationship between available field samples and diet. As the nature of birds makes it possible to set up an isotopically well defined experiment, nitrogen and carbon isotope relationships between various tissues of a cormorant and its constant diet was studied. The tissues were collected after more than 23 years on the same diet. The two stable isotope ratios for the diet and the tissues showed a high correlation (r = 0.92). The linear regression analysis gave the slope of 1.1. Among the tissues examined, skin showed the highest enrichment in both N-15 (4.8 parts per thousand) and C-13 (4.2 parts per thousand), while brain gave the lowest enrichments (0.8 parts per thousand for N-15 and 1.1 parts per thousand for C-13).