在海洋酸化下,一个独特的珊瑚礁全生物群落的衰退
Jake Williams1,2, Nathalie Pettorelli2, Aaron C Hartmann3
1Georgina Mace Centre for the Living Planet, Department of Life Sciences, Imperial College London, Buckhurst Road, Ascot, SL5 7PY, UK.
Microbiome
|April 16, 2024
概括
海洋酸化导致珊瑚礁微生物变得与环境微生物更相似. 这种微生物转变,以及简化光合作用社区和藻类的增加,表明在压力下生态系统的广泛变化.
科学领域:
- 海洋生态海洋生态学
- 微生物生态学 微生物生态学
- 海洋学 海洋学 海洋学
背景情况:
- 微生物对珊瑚礁的健康至关重要,它们支持全生物体 (宿主微生物协会) 内的营养和免疫力.
- 现有的关于珊瑚礁微生物功能的研究主要集中在有限数量的宿主生物体上,如珊瑚和海绵.
- 海洋酸化 (OA) 是一个重要的全球压力因素,为研究生态系统规模微生物作用提供了独特的机会.
研究的目的:
- 测试海洋酸化 (OA) 是否导致珊瑚礁的生态系统级微生物转移.
- 调查OA下的巨型社区变化是否导致全息生物和环境微生物群之间的区别减少.
主要方法:
- 在现场实验使用珊瑚礁holobionts的遗传和化学数据.
- 在巴布亚新几内亚的二氧化碳透处在自然pH梯度上采样.
主要成果:
- 在OA下,盆地全息生物微生物组和代谢组与沉积物微生物组和代谢组的区别越来越小.
- 甲状腺炎导致环境微生物对盆地巨虫群体的殖民性增加.
- 观察到盆地光合作用群体的简化和宏藻的丰富性增加,与微生物化相一致.
结论:
- 海洋酸化导致珊瑚礁的结构变化,减少了 benthic holobionts 中微生物群的鲜明性.
- 微生物化和破坏的宏观食物网络是对环境压力的相互联系的反应.
- 这些发现突出了OA下的生态系统变化的普遍,有害和可衡量的形式.
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