Description and quantification of pteropod shell dissolution: a sensitive bioindicator of ocean acidification.
Description and quantification of pteropod shell dissolution: a sensitive bioindicator of ocean acidification.
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DOI：
10.1111/j.1365-2486.2012.02668.x
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发表时间：
2012-01-01
影响因子：
11.6
通讯作者：
Montagna, R.
中科院分区：
文献类型：
--
作者：
Bednarsek, N.;Tarling, G. A.;Montagna, R.
人为造成的海洋酸化可能会促进文石壳的溶解，从而对海洋钙化生物，如带壳翼足类动物产生负面影响。壳体溶解的研究需要一种准确和灵敏的方法来评估壳体的损坏。通过在富CO2海水中孵育4天和14天诱导壳溶解。我们描述了一个程序，允许溶解的水平进行评估，并分为三种主要类型：I型与部分溶解的棱柱层; II型与暴露的底层交叉层状层，和III型，其中交叉层状层显示溶解的迹象。溶出水平与培养条件具有良好的对应关系，在不饱和条件下保存14天的样本中发现最严重的损伤（Omega0.8）。这种方法使小型浮游钙化生物对酸化条件的反应能够在早期阶段被检测到，从而使翼足类动物成为未来海洋酸化的宝贵生物指标。
Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2-enriched seawater for 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels of dissolution showed a good correspondence to the incubation conditions, with the most severe damage found in specimens held for 14 days in undersaturated condition (Omega0.8). This methodology enables the response of small pelagic calcifiers to acidified conditions to be detected at an early stage, thus making pteropods a valuable bioindicator of future ocean acidification.