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瓜伊马斯盆地的异质性活动升高的热水浮潮影响了深海碳循环
Andrew Montgomery1, Guang-Chao Zhuang1,2, Zhichao Zhou3
1Department of Marine Sciences, University of Georgia, Athens, GA, USA.
Nature communications
|May 28, 2025
概括
深海的热水喷口通过释放有机碳显著增加了微生物活动. 这种有机碳燃料的异质性生产,比以前想象的要大得多,影响深海碳循环.
科学领域:
- 海洋生物学 海洋生物学
- 深海生态 深海生态
- 生物地质化学生物地质化学
背景情况:
- 传统上,深海的热水主要集中在化学自营的生产上.
- 有机碳在这些羽毛中的作用和代谢命运在很大程度上不受限制.
- 了解有机碳循环对于评估热水风口对深海的影响至关重要.
研究的目的:
- 为了研究在深海水热和周围的有机碳代谢.
- 为了限制热水喷口对深海碳循环的影响.
- 确定微生物群落和参与有机碳降解的代谢途径.
主要方法:
- 检测和量化乙酸和甲醇.
- 测量异构和化学自构的生产率.
- 功能基因的转录基因分析.
主要成果:
- 乙酸盐和甲醇在瓜伊马斯盆地水热水中广泛存在并迅速代谢.
- 异质性生产明显超过化学性生产,达到7.69μg C L−1 d−1.1.
- 微生物群落对水热输入产生快速反应,其中胺蛋白细菌参与降解水热来源的有机碳.
结论:
- 有机碳在热水中以不同的方式循环.
- 热水风口的输入对深海中异质型微生物活动产生了深刻的影响.
- 这项研究强调了异质性在水热喷口附近的深海碳循环中发挥的重要作用.
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