微生物真核生物掠食压力和深海水热喷口的生物质
Sarah K Hu1,2, Rika E Anderson3, Maria G Pachiadaki4
1Department of Oceanography, Texas A&M University, College Station, TX 77843, United States.
The ISME journal
|February 17, 2024
概括
微生物真核生物在深海通风食物网中至关重要. 实验显示,在现场压力下,细胞丰度和放牧率更高,突出了它们在碳出口和营养供应方面的重要作用.
科学领域:
- 深海生态 深海生态
- 海洋微生物生态学
背景情况:
- 深海的热水喷口支持微生物生命,形成了食物网的基础.
- 微生物真核生物 (原生生物) 是这些生态系统的关键消费者和营养来源.
研究的目的:
- 测量微生物真核细胞的丰富性和在扩散热水流体中的掠食压力.
- 调查现场压力对这些测量的影响.
主要方法:
- 现场压力实验是在低温的扩散热水流体中进行的.
- 测量包括微生物真核细胞丰度和放牧率.
- 与1大气层实验进行了比较.
主要成果:
- 与1大气条件相比,在in situ压力下细胞丰度和放牧率更高.
- 降压被确定为影响细胞完整性的因素.
- 研究人员发现原生体放牧率,猎物丰富度和通风液温度之间存在相关性.
结论:
- 在水热燃料的微生物食物网中存在大量的原生态生物质.
- 质地牧草动物对深海的碳出口和营养循环有着显著的贡献.
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