Distribution of magnesium in coral skeleton
Distribution of magnesium in coral skeleton
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DOI：
10.1029/2004gl021313
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发表时间：
2004-12-11
影响因子：
5.2
通讯作者：
Dunbar, RB
中科院分区：
文献类型：
--
作者：
Meibom, A;Cuif, JP;Dunbar, RB
离子微探针对大型造礁珊瑚帕沃纳棒状珊瑚文石骨架的成像显示，镁和锶的分布截然不同。与锶相比，镁的分布与骨骼的精细结构密切相关，并与钙化中心周围文石纤维的层状组织相对应，钙化中心的镁浓度高达十倍。这表明对骨骼内所有结构成分的镁成分进行了强有力的生物控制。珊瑚可以利用镁来主动控制不同骨骼晶体成分的生长。
Ion micro-probe imaging of the aragonite skeleton of Pavona clavus, a massive reef-building coral, shows that magnesium and strontium are distributed very differently. In contrast to strontium, the distribution of magnesium is strongly correlated with the fine-scale structure of the skeleton and corresponds to the layered organization of aragonite fibers surrounding the centers of calcification, which have up to ten times higher magnesium concentration. This indicates a strong biological control over the magnesium composition of all structural components within the skeleton. Magnesium may be used by the coral to actively control the growth of the different skeletal crystal components.