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库罗西奥流中皮科奇亚诺细菌群体结构的季节性模式

Ya-Fan Chan¹, Chih-Ching Chung^2,3, Gwo-Ching Gong^2,3

¹Department of Microbiology, Soochow University, Taipei 11101, Taiwan.

|November 24, 2023

概括

库罗西奥流中的小浮游生物的季节性动态显示了Synechococcus和Prochlorococcus的明显分布. 季风的动影响了Prochlorococcus深度,而特定的菌群则全年占主导地位.

科学领域:

海洋微生物生态学
海洋学海洋学海洋学
生物地质化学循环生物地质化学循环

背景情况:

库罗西奥流是一个营养贫乏,温暖和盐的西部边界流,显著影响太平洋海洋生态系统和全球气候.
浮游生物构成了海洋食物网的关键基础,在生物地化学过程中起着至关重要的作用.

研究的目的:

为了研究季节性分布模式和在亚热带Kuroshio流中的小浮游生物的丰富性.
为了确定主导的平流体群及其全年的遗传多样性.

主要方法:

库罗西奥流内的水柱的季节性采样.
皮科浮游生物细胞丰富度的计数.
16S rRNA基因多样性分析以确定社区组成和相对丰度.

主要成果:

在地表水中始终发现Synechococcus (10^410^5细胞mL-1),而Prochlorococcus超过10^5细胞mL-1全年.
在季节性垂直迁移的过程中,Prochlorococcus在夏季/秋季集中在euphotic区底部附近,在春季/冬季均分布,受到季风动的影响.
赛内可可克类II和高光II的Prochlorococcus是占主导地位的菌株;蛋白质细菌和动态细菌占其他小浮游生物的很大一部分.

结论:

季节性变化和季风的影响显著影响了库罗西约流中的小浮游生物群落结构和分布.
了解这些动态对于预测气候变化对海洋生态系统和西部边界流中的生物地化学循环的影响至关重要.

关键词:

库罗西奥目前的电流甲菌 (Prochlorococcus) 是一种甲菌.这就是Synechococcus.原生生物的皮科菲托浮游生物.

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Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.