VITAL EFFECT ON STABLE-ISOTOPE COMPOSITION SEEN IN FORAMINIFERA AND CORAL SKELETONS
VITAL EFFECT ON STABLE-ISOTOPE COMPOSITION SEEN IN FORAMINIFERA AND CORAL SKELETONS
复制标题
DOI：
10.1038/273199a0
复制
发表时间：
1978-01-01
期刊：
影响因子：
64.8
通讯作者：
EREZ, J
中科院分区：
文献类型：
--
作者：
EREZ, J
由雌雄同体珊瑚和相关的底栖有孔虫沉淀的碳酸盐稳定 - 同位素组成受共生藻类光合作用的强烈影响。原位14C和45CA摄取实验表明，当光合作用增加时，骨骼中会掺入更多的轻度代谢二氧化碳。该机制解释了先前报道的这些生物的非平衡同位素组合物（以及浮游有孔虫），并对基于稳定的异位素分析的古环境确定具有重要意义。
Stable-isotope composition of carbonate precipitated by hermatypic corals and associated benthonic foraminifera is strongly influenced by photosynthesis of symbiotic algae. In situ 14C and 45Ca uptake experiments show that when photosynthesis increases, more light metabolic CO2 is incorporated in the skeleton. This mechanism explains the non-equilibrium isotopic compositions previously reported for these organisms (as well as for planktonic foraminifera), and have important implications for palaeoenvironmental determinations based on stable-isotope analysis.