Characteristics of long-term changes in microbial communities from contaminated sediments along the west coast of South Korea: Ecological assessment with eDNA and physicochemical analyses

Lee, Aslan Hwanhwi; Lee, Jung-Hyun; Noh, Junsung; Lee, Changkeun; Hong, Seongjin; Kwon, Bong-Oh; Kim, Jae Jin; Khim, Jong Seong

doi:10.1016/j.marpolbul.2020.111592

Cited by 13 publications

(5 citation statements)

References 52 publications

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“…Chlamydiae accounted for 37.6% at station S4. Researchers reported that Chlamydiae encoded a multicopper oxidase and had metal‐resistant pathways (Lee et al, 2020). It was suggested that the amoebae hosts of Chlamydiae can serve as reservoirs and protective shelters against harsh environmental conditions (Dasgupta et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

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Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Verpoort

et al. 2023

Water Environment Research

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The Salt River is an important urban river in Kaohsiung, Taiwan. In this study, the source identification and risk and toxicity assessment of the heavymetal-contaminated sediments in the Salt River were investigated. The geo-accumulation index (Igeo), enrichment factor (EF), sediment quality guidelines (SQGs), potential ecological risk index (RI), pollution load index (PLI), and toxic units (TU) were applied to determine effects of heavy metals on microbial diversities and ecosystems. Results from the ecological and environmental risk assessment show that high concentrations of Zn, Cr, and Ni were detected in the midstream area and the sum of toxic units (ΣTUs) in the midstream (7.2-32.0) is higher than in the downstream (14.0-19.7) and upstream (9.2-17.1). It could be because of the continuous inputs of heavymetal-contained wastewaters from adjacent industrial parks. Results also inferred that the detected heavy metals in the upstream residential and commercial areas were possibly caused by nearby vehicle emissions, non-point source pollution, and domestic wastewater discharges. Results of metagenomic assays show that the sediments contained significant microbial diversities.Metal-tolerant bacterial phyla (Proteobacteria: 24.4%-46.4%, Bacteroidetes:1.3%-14.8%, and Actinobacteria: 2.3%-11.1%) and pathogenic bacterial phyla (Chlamydiae: 0.5%-37.6% and Chloroflexi: 5.8%-7.2%) with relatively high abundance were detected. Metal-tolerant bacteria would adsorb metals and cause the increased metal concentrations in sediments. Results indicate that the bacterial composition in sediment environments was affected by anthropogenic pollution and human activities and the heavy-metal-polluted ecosystem caused the variations in bacterial communities.

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Section: Resultsmentioning

confidence: 99%

“…Researchers have reported that Actinobacteria are usually the dominant bacterial phylum in freshwater sediments (Lee et al, 2020). Results from this study show that Chlamydiae (38%) were the most abundant phylum at station S4.…”

Section: Resultsmentioning

confidence: 99%

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Verpoort

et al. 2023

Water Environment Research

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“…These enzymes can degrade synthetic polymers, allowing for the biodegradation of plastics ( Ganesh Kumar et al, 2020 ). The diversity, composition, and biodegradation potential of microbial communities, as well as the impact of various factors on microbial communities, have all been thoroughly investigated ( Coutinho et al, 2019 ; Lee et al, 2020 ; Seeley et al, 2020 ; Wang et al, 2021a ). In addition, studies have found that measures such as the global population lockdown imposed during COVID-19 have had an indirect impact on terrestrial and marine fauna.…”

Section: Results and Analysismentioning

confidence: 99%

Does marine environmental research meet the challenges of marine pollution induced by the COVID-19 pandemic? Comparison analysis before and during the pandemic based on bibliometrics

Wang

Zhang²,

Li³

et al. 2022

Marine Pollution Bulletin

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“…In all locations, the predominant phyla were Proteobacteria and Bacteroidetes , followed by Firmicutes , Cyanobacteria , and Chloroflexi . Proteobacteria , Bacteroidetes , and Firmicutes were the dominant phyla in the marine sediments ( 11 ). In particular, the predominance of Firmicutes may be due to the influence of anthropogenic activities ( 12 ).…”

Section: Announcementmentioning

confidence: 99%

16S rRNA Gene Amplicon Sequencing of Contaminated Coastal Sediment Collected from the Taehwa River Estuary, South Korea

Woo

Lee

Kim

et al. 2021

Microbiol Resour Announc

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Characteristics of long-term changes in microbial communities from contaminated sediments along the west coast of South Korea: Ecological assessment with eDNA and physicochemical analyses

Cited by 13 publications

References 52 publications

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Does marine environmental research meet the challenges of marine pollution induced by the COVID-19 pandemic? Comparison analysis before and during the pandemic based on bibliometrics

16S rRNA Gene Amplicon Sequencing of Contaminated Coastal Sediment Collected from the Taehwa River Estuary, South Korea

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