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POTENTIAL INTERACTIONS AMONG OCEAN ACIDIFICATION, COCCOLITHOPHORES, AND THE OPTICAL PROPERTIES OF SEAWATER

机译:海洋酸化,椰油膜和海水的光学性质之间的潜在相互作用

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摘要

The effects of ocean acidification (OA) are expected to be manifest over a broad range of spatial and temporal scales throughout the world ocean as the pH drops from the pre-industrial value of 8.2 to 7.8 by the year 2100. Calcifying plankton (like other biocalcifiers such as corals and shellfish) are expected to be strongly affected by OA because of their need for saturating carbonate conditions, which enables precipitation of calcium carbonate. Within the calcifying plankton, coccolithophores precipitate the smallest calcium carbonate particles (coccoliths), which are some of the strongest light-scattering particles in the sea. Thus, anything that will affect coccolithophore calcification (including OA) will likely affect the optical properties of the sea. Here, we describe the optical properties of coccolithophores and interpret some historical observations within the context of OA. Then, we discuss technologies that are available to measure optical properties of coccolithophores, and also how we could exploit coccolithophore optical properties to measure impacts of OA at different scales. We end with a discussion of the consequences (both optical and biogeochemical) of a "decalcified" surface ocean.
机译:随着pH值从工业化前的8.2值下降到2100年的7.8,预计在整个世界范围的海洋中,海洋酸化(OA)的影响将在广泛的时空范围内体现出来。生物钙质(例如珊瑚和贝类)预计会受到OA的强烈影响,因为它们需要饱和碳酸盐条件,从而使碳酸钙沉淀。在钙化浮游生物中,球墨石藻沉淀出最小的碳酸钙颗粒(球石),这是海洋中一些最强的光散射颗粒。因此,任何会影响球墨石钙化(包括OA)的因素都可能会影响海洋的光学特性。在这里,我们描述了球墨镜的光学性质,并解释了在OA环境中的一些历史观察。然后,我们讨论了可用于测量球墨镜的光学特性的技术,以及如何利用球墨石的光学特性来测量不同尺度下OA的影响。我们以“脱钙的”表层海洋的后果(光学和生物地球化学)为结尾进行讨论。

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  • 来源
    《Oceanography》 |2009年第4期|146-159|共14页
  • 作者单位

    Bigelow Laboratory for Ocean Sciences, West Boothbay Harbor, ME, USA;

    Computer Science Department, University of Massachusetts, Amherst, MA, USA;

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  • 正文语种 eng
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