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Updated: Nov 3, 2025

Unraveling the Unseen Players in the Ocean - A Field Guide to Water Chemistry and Marine Microbiology
Published on: November 5, 2014
Diversity and co-occurrence networks of picoeukaryotes as a tool for indicating underlying environmental
Qian Liu1, Qiannan Zhao2, Yong Jiang3
1Key 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.
Abstract:
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.
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