Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China; Frontiers Science Center for Deep Ocean Multiphases and Earth System, Ocean University of China, Qingdao, China; College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266100, China.
College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266100, China.
Mar Environ Res. 2021 Aug;170:105376. doi: 10.1016/j.marenvres.2021.105376. Epub 2021 Jun 1.
Picoeukaryotes are an essential component of microbial communities and play key roles in marine ecosystems. In this study, surface water picoeukaryotes were investigated at 32 stations along a latitudinal cross-section of the Western Pacific (WP) in 2015. Multivariate analyses demonstrated that there were clear spatial patterns in picoeukaryotic community structures which were consistent with the distributions of environmental variables. The spatial patterns of community structures and diversity indices were all significantly correlated with multiple environmental parameters, especially nutrients. Co-occurrence networks linked community variability to environmental heterogeneity. In summary, the construction of picoeukaryotic communities in the WP was significantly affected by numerous environmental variables, and certain variables were revealed as key forcing factors responsible for the main similarities between picoeukaryotic communities. This study details the relationships between the picoeukaryotes and environmental parameters in the WP, and provides insight for application of using picoeukaryotes as indicator in future bioassessment for open waters.
微微型真核生物是微生物群落的重要组成部分，在海洋生态系统中发挥着关键作用。本研究于 2015 年在西太平洋（WP）沿一个纬向断面的 32 个站位调查了表层水中的微微型真核生物。多元分析表明，微微型真核生物群落结构存在明显的空间格局，与环境变量的分布一致。群落结构和多样性指数的空间格局均与多个环境参数显著相关，特别是营养物质。共生网络将群落变异性与环境异质性联系起来。总之，WP 中微微型真核生物群落的构建受到众多环境变量的显著影响，某些变量被揭示为导致微微型真核生物群落之间主要相似性的关键驱动因素。本研究详细阐述了 WP 中微微型真核生物与环境参数之间的关系，为未来开阔水域的生物评估中利用微微型真核生物作为指示生物提供了参考。
