在Kuroshio Current的影响下,共同存在的微生物群的社区组织和网络稳定性
Yi Li1, Yan Li1, Hualong Wang1
1College of Marine Life Sciences, MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Lab of Polar Oceanography and Global Ocean Change, Ocean University of China, Qingdao 266003, China; UMT-OUC Joint Center for Marine Studies, Qingdao 266003, China.
Marine pollution bulletin
|February 5, 2025
概括
库罗西奥流塑造了西北太平洋的海洋微生物群落. 原核生物和微核生物表现出不同的稳定性和适应性策略,影响整体生态系统的弹性.
科学领域:
- 海洋微生物学 海洋微生物学
- 海洋学 海洋学 海洋学
- 生态系统动态生态系统动态
背景情况:
- 库罗西奥流对西北太平洋 (NWPO) 的环境和生物多样性产生重大影响.
- 了解微生物社区的组合和对这种流动的反应至关重要,但在很大程度上是未知的.
- 研究的主要地区包括日本南部的库洛西奥 (KSJ),库洛西奥延伸 (KE) 和库洛西奥-奥亚西奥前额间区域 (KOIZ).
研究的目的:
- 系统地研究在库罗西约电流的影响下,原生生物和真核生物微生物组的共同发生特性和稳定性.
- 阐明原核生物和微核生物对环境变化的适应性和生存策略的对比.
主要方法:
- 分析三个不同的NWPO地区微生物共发生模式和稳定性的分析.
- 对 prokaryotic 和 eukaryotic 社区的原生态距离和利基范围的比较评估.
- 在垂直梯度沿线评估微生物强度和组成稳定性.
主要成果:
- 与KSJ和KOIZ相比,KE中的微生物组表现出较小的遗传学距离和更广泛的利基范围.
- 微核细胞的强度在KE中最高,在KOIZ中最低; prokaryotes显示了相反的模式.
- 原核细胞网络比微核细胞网络更稳定;微核细胞对环境变化更敏感.
结论:
- 原核生物和微核生物在库洛西奥流的影响下表现出互补的稳定作用.
- 库罗西奥流对原核生物和微核生物的社区组织和共发生稳定性产生不同的影响.
- 对比的微生物策略有助于在动态的NWPO中保持社区和生态系统的稳定.
相关概念视频
Microenvironments
Microorganisms inhabit highly localized spaces known as microenvironments, which are defined by distinct physical and chemical characteristics. These include oxygen concentration, pH, temperature, light availability, and nutrient levels. The conditions within a microenvironment can differ markedly from those in the surrounding area and significantly influence microbial growth, metabolism, and community structure.Microenvironments often display sharp physicochemical gradients over small spatial...
Microbial Mats
Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
Microbial Interactions: Cooperation
Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...
Marine Microbial Ecology
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
Deep Sea Microbial Ecology
The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...
Freshwater Microbial Ecology
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...


