Quantifying the Effect of Anthropogenic Climate Change on Calcifying Plankton
Quantifying the Effect of Anthropogenic Climate Change on Calcifying Plankton
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DOI：
10.1038/s41598-020-58501-w
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发表时间：
2020-01-31
影响因子：
4.6
通讯作者：
Miller, C. Giles
中科院分区：
文献类型：
--
作者：
Fox, Lyndsey;Stukins, Stephen;Miller, C. Giles
海洋酸化被广泛认为是对我们海洋的迫在眉睫的威胁，所有海洋盆地都有记录表明海洋酸化。由于海洋酸化阻碍了生物碳酸盐的生产，预计海水化学变化将产生灾难性的生物影响，这反过来将导致海洋生态系统的重大变化。然而，以前量化酸化对浮游钙化生物的影响的尝试依赖于基于实验室的研究，具有很大的方法学局限性。通过将开创性的HMS挑战者号(1872-1876)的历史浮游生物拖曳与最近的塔拉海洋探险材料(2009-2016)进行比较，这一点已经被克服。对选定的赤道太平洋浮游有孔虫进行的纳米CT扫描显示，所有现代标本的贝壳都比历史上的标本薄76%。“挑战者重现”项目突出了自工业革命早期以来，历史海洋收集作为研究海洋酸化的工具的潜力。对这些生物档案的进一步分析将使研究人员能够量化全球人为气候变化的影响。
Widely regarded as an imminent threat to our oceans, ocean acidification has been documented in all oceanic basins. Projected changes in seawater chemistry will have catastrophic biotic effects due to ocean acidification hindering biogenic carbonate production, which will in turn lead to substantial changes in marine ecosystems. However, previous attempts to quantify the effect of acidification on planktonic calcifying organisms has relied on laboratory based studies with substantial methodological limitations. This has been overcome by comparing historic plankton tows from the seminal HMS Challenger Expedition (1872-1876) with the recent Tara Oceans expedition material (2009-2016). Nano CT-scans of selected equatorial Pacific Ocean planktonic foraminifera, have revealed that all modern specimens had up to 76% thinner shells than their historic counterparts. The "Challenger Revisited" project highlights the potential of historic ocean collections as a tool to investigate ocean acidification since the early Industrial Revolution. Further analyses of such biotic archives will enable researchers to quantify the effects of anthropogenic climate change across the globe.