溶解的二氧化碳对两种大型盆地菌动物化物的影响
Linda Karoline Dämmer1, Angelina Ivkić1, Lennart de Nooijer1
1Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands.
PloS one
|August 16, 2023
概括
海洋酸化对海洋生物产生影响,但两种类动物,Heterostegina depressa和Amphistegina lessonii,在中间二氧化碳水平下显示碳酸盐产量增加. 它们的生长表明它们能够适应不断变化的海洋化学.
科学领域:
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 大气中二氧化碳的上升导致海洋酸化,海水pH值下降和碳酸盐和状态下降.
- 酸化对海洋化生物构成挑战,可能会增加能源需求或减少化.
- 藻类是主要的海洋化物,对环境变化有不同的反应.
研究的目的:
- 为了研究两种盆地藻类对不同海洋酸化场景的化反应.
- 在不同二氧化碳 (pCO2) 偏压下量化碳酸降水率.
- 想象二氧化碳增加对菌生长和腔室形成的影响.
主要方法:
- 在四个pCO2水平 (400, 700, 1000, 2200 ppm) 下培养了Heterostegina depressa和Amphistegina lessonii.
- 性异常技术用于测量碳酸沉.
- 微型计算机断层扫描 (micro-CT) 扫描以评估贝形态和生长.
主要成果:
- 这两种类动物在二氧化碳中间度 (700-1000 ppm) 时表现出最大的碳酸盐产量.
- 随着二氧化碳的增加,室内添加率增加,这表明利用了可用的无机碳.
- 微型CT扫描显示了与二氧化碳暴露相关的形态变化.
结论:
- 尽管和度降低,但这些类物种显示出能够利用更多的溶解无机碳的能力.
- 这些可变的反应突出显示了海洋酸化所面临的藻类的物种特异性适应和化机制.
- 这些发现有助于理解大气二氧化碳升对海洋生态系统的复杂生态影响.
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