Covariance of Phytoplankton, Bacteria, and Zooplankton Communities Within Microcystis Blooms in San Francisco Estuary

blooms have occurred in upper San Francisco Estuary (USFE) since 1999, but their potential impacts on plankton communities have not been fully quantified. Five years of field data collected from stations across the freshwater reaches of the estuary were used to identify the plankton communities that...

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Bibliographic Details
Published in:Frontiers in microbiology 2021-06, Vol.12, p.632264
Main Authors: Lehman, Peggy W, Kurobe, Tomofumi, Huynh, Khiet, Lesmeister, Sarah, Teh, Swee J
Format: Article
Language:English
Subjects:
bacteria
cyanobacteria blooms
estuary
metagenomics
Microbiology
Microcystis
phytoplankton
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Summary:blooms have occurred in upper San Francisco Estuary (USFE) since 1999, but their potential impacts on plankton communities have not been fully quantified. Five years of field data collected from stations across the freshwater reaches of the estuary were used to identify the plankton communities that covaried with blooms, including non-photosynthetic bacteria, cyanobacteria, phytoplankton, zooplankton, and benthic genera using a suite of analyses, including microscopy, quantitative PCR (qPCR), and shotgun metagenomic analysis. Coherence between the abundance of and members of the plankton community was determined by hierarchal cluster analysis (CLUSTER) and type 3 similarity profile analysis (SIMPROF), as well as correlation analysis. abundance varied with many cyanobacteria and phytoplankton genera and was most closely correlated with the non-toxic cyanobacterium , the green algae and , and the potentially toxic cyanobacteria , , , , and . Among non-photosynthetic bacteria, the xenobiotic bacterium was the most closely correlated with abundance. The coherence of DNA sequences for phyla across trophic levels in the plankton community also demonstrated the decrease in large zooplankton and increase in small zooplankton during blooms. The breadth of correlations between and plankton across trophic levels suggests influences ecosystem production through bottom-up control during blooms. Importantly, the abundance of and other members of the plankton community varied with wet and dry conditions, indicating climate was a significant driver of trophic structure during blooms.
ISSN:1664-302X
1664-302X
DOI:10.3389/fmicb.2021.632264