浮游有孔虫根据海洋密度调节钙化。

IF 8.9 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES
Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-07-31 DOI:10.1038/s43247-025-02558-w
Stergios D Zarkogiannis, James W B Rae, Benjamin R Shipley, P Graham Mortyn
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引用次数: 0

摘要

浮游有孔虫是海洋碳循环的关键贡献者。在远洋环境中,浮游生物矿化物产生的碳酸盐调节海洋与大气的二氧化碳交换,并将表层碳输出到深海。在这里,我们比较了来自大西洋中部的三种浮游有孔虫物种的外壳特征和一系列环境参数,以辨别其变化的潜在因素。分析结果表明,有孔虫的钙化与海水密度有关,并与物种栖息地深度有关,而有孔虫的体壳密度可以作为海水密度的代用指标,与物种无关。我们观察到,它们的壳重量随着栖息地深度的增加而增加,使活细胞能够调整其总体密度以匹配周围液体的密度。这表明非运动生物的钙化具有浮力调节功能,并将对人为驱动的海洋密度减少(海洋稀薄化)做出反应,从而对碳循环产生潜在影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Planktonic foraminifera regulate calcification according to ocean density.

Planktonic foraminifera are key contributors to the oceanic carbon cycle. In pelagic environments, carbonate production by planktonic biomineralizers regulates ocean-atmosphere carbon dioxide exchange and exports surface carbon to the deep ocean. Here we compare shell traits of three planktonic foraminifera species from the central Atlantic with a suite of environmental parameters to discern the factors underlying their variations. Our analysis revealed that calcification in foraminifera is associated with seawater density and depends on species habitat depth, whereas foraminifera bulk shell densities may serve as a seawater density proxy, regardless of species. We observe that their shell weights increased with habitat depth, enabling the living cells to adjust their overall density to match that of the surrounding liquid. This suggests that calcification in nonmotile organisms has a buoyancy regulatory function and will respond to the anthropogenically driven reductions in ocean density (oceanic rarefication), with potential consequences for the carbon cycle.

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来源期刊
Communications Earth & Environment
Communications Earth & Environment Earth and Planetary Sciences-General Earth and Planetary Sciences
CiteScore
8.60
自引率
2.50%
发文量
269
审稿时长
26 weeks
期刊介绍: Communications Earth & Environment is an open access journal from Nature Portfolio publishing high-quality research, reviews and commentary in all areas of the Earth, environmental and planetary sciences. Research papers published by the journal represent significant advances that bring new insight to a specialized area in Earth science, planetary science or environmental science. Communications Earth & Environment has a 2-year impact factor of 7.9 (2022 Journal Citation Reports®). Articles published in the journal in 2022 were downloaded 1,412,858 times. Median time from submission to the first editorial decision is 8 days.
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