Harmful algal blooms and liver diseases: focusing on the areas near the four major rivers in South Korea

Lee, Seungjun; Kim, Jinnam; Choi, Boseung; Kim, Gijung; Lee, Ji-Young

doi:10.1080/10590501.2019.1674600

Cited by 21 publications

(25 citation statements)

References 31 publications

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“…Principal coordinates analysis (PCoA) was performed using the Bray‐Curtis dissimilarity index in order to determine community similarity or dissimilarity between the comparison groups (Ibarbalz, Figuerola, & Erijman, ). Finally, to delineate the relative effect of water quality, child diet, and child age on the α‐diversity of the gut microbiota, we followed S. Lee, Kim, Choi, Kim, and Lee () and Zhang, Lee, Liang, and Shum () and applied a generalized liner mixed‐effect model (GLMM) using R software (version 3.6.1) (Scheiman et al, ). Children were divided into one of three groups based on their diet (exclusive breastfeeding, mixed feeding, and family diet).…”

Section: Methodsmentioning

confidence: 99%

Characterization of the gut microbiota of Nicaraguan children in a water insecure context

Piperata

Lee

Apaza

et al. 2019

American J Hum Biol

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Objectives: The gut microbiota varies across human populations. The first years of life are a critical period in its development. While delivery mode and diet contribute to observed variation, the additional contribution of specific environmental factors remains poorly understood. One factor is waterborne enteric pathogen exposure. In this pilot study, we explore the relationship between household water security and the gut microbiota of children.Methods: From Nicaraguan households (n = 39), we collected drinking water samples, as well as fecal samples from children aged one month to 5.99 years (n = 53). We tested water samples for total coliforms (CFU/mL) and the presence of common enteric pathogens. Composition and diversity of the gut microbiota were characterized by 16S rRNA sequencing. Households were classified as having drinking water that was "low" (<29 CFU/mL) or "high" (≥29 CFU/mL) in coliforms. We used permutational analyses of variance and Mann-Whitney U-tests to identify differences in the composition and diversity of the gut microbiota of children living in these two home types.Results: Insecure access led households to store drinking water and 85% tested positive for coliforms. High concentrations of Salmonella and Campylobacter were found in water and fecal samples. Controlling for age, the gut microbiota of children from high coliform homes were compositionally different and less diverse than those from low coliform homes. Conclusions:Results indicate that research exploring the ways water insecurity affects human biology should consider the gut microbiome and that investigations of inter-population variation in the gut microbial community of children should consider pathogen exposure and infection.

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Section: Methodsmentioning

confidence: 99%

Characterization of the gut microbiota of Nicaraguan children in a water insecure context

Piperata

Lee

Apaza

et al. 2019

American J Hum Biol

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“…There is a stronger connection between ecological and human health. Nutrients, WRT, and temperature impacted algal growth and toxin production in the aquatic systems [ 77 ]. Previous research documented that microcystis and microcystins levels are favorably linked with the CHL-a level in most Korean rivers [ 78 , 79 ].…”

Section: Discussionmentioning

confidence: 99%

Ecological River Health Assessment Using Multi-Metric Models in an Asian Temperate Region with Land Use/Land Cover as the Primary Factor Regulating Nutrients, Organic Matter, and Fish Composition

Mamun

Jargal

Atique

et al. 2022

IJERPH

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This study was performed to determine the ecological health of a temperate river over nine years (2011–2019); it also analyzed the trophic structure and linkage of nutrients (nitrogen [N] and phosphorus [P]), sestonic chlorophyll-a (CHL-a), and the top trophic fish in the Asian monsoon region. Water chemistry, trophic indicators, and tolerance guilds were primarily influenced by land use and land cover (LULC); the magnitude of variation was also related to geographic elevation, artificial physical barriers (weirs), and point sources. Levels of nutrients, organic matter, and CHL-a largely influenced by the intensity of the monsoon seasonality for a particular LULC and stream order. Mann–Kendall tests based on a long-term annual dataset showed that annual organic matter and CHL-a increased over time because of longer hydraulic residence time after weir construction. The results of empirical nutrient models suggested that P was the key determinant for algal growth (CHL-a); the strong P-limitation was supported by N:P ratios > 17 in ambient waters. Linear regression models and canonical correspondence analysis (CCA) were used to determine the influences of LULC and water quality on the trophic/tolerance linkages, fish community compositions and structures, and river health. Tolerant species had a positive functional relationship with nutrient enrichment through total phosphorus (TP) (R2 = 0.55, p < 0.05) and total nitrogen (TN) (R2 = 0.57, p < 0.05), organic pollution in terms of biological oxygen demand (BOD) (R2 = 0.41, p < 0.05) and chemical oxygen demand (COD) (R2 = 0.49, p < 0.05), and algal growth (R2 = 0.47, p < 0.05); sensitive species exhibited the opposite pattern. The degradation of river health, based on the multi-metric index of biotic integrity (IBI) model, was evident in the downriver region (“fair–poor” condition) and was supported by the quantitative fish community index (QFCI) model. The outcomes suggested that the degradation and variation of ecological river health, trophic linkages of water chemistry (N, P)-algal biomass-fish, were largely controlled by the land use pattern and construction of physical barriers in relation to the Asian monsoon.

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“…As a result, in 2018 South Korea's Ministry of Environment launched an investigation to evaluate the project's consequences and impacts on riverine ecosystems. A fierce discussion is ongoing about whether to dismantle or reopen the weir gates and pay more attention to the renaturalization and restoration of the rivers (Lah et al 2015;Lee et al 2019).…”

Section: Case Studymentioning

confidence: 99%

Barriers and Drivers for Mainstreaming Nature-Based Solutions for Flood Risks: The Case of South Korea

Han

Kuhlicke

2021

Int J Disaster Risk Sci

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Nature-based solutions (NBS) are seen as a promising adaptation measure that sustainably deals with diverse societal challenges, while simultaneously delivering multiple benefits. Nature-based solutions have been highlighted as a resilient and sustainable means of mitigating floods and other hazards globally. This study examined diverging conceptualizations of NBS, as well as the attitudinal (for example, emotions and beliefs) and contextual (for example, legal and political aspects) barriers and drivers of NBS for flood risks in South Korea. Semistructured interviews were conducted with 11 experts and focused on the topic of flood risk measures and NBS case studies. The analysis found 11 barriers and five drivers in the attitudinal domain, and 13 barriers and two drivers in the contextual domain. Most experts see direct monetary benefits as an important attitudinal factor for the public. Meanwhile, the cost-effectiveness of NBS and their capacity to cope with flood risks were deemed influential factors that could lead decision makers to opt for NBS. Among the contextual factors, insufficient systems to integrate NBS in practice and the ideologicalization of NBS policy were found to be peculiar barriers, which hinder consistent realization of initiatives and a long-term national plan for NBS. Understanding the barriers and drivers related to the mainstreaming of NBS is critical if we are to make the most of such solutions for society and nature. It is also essential that we have a shared definition, expectation, and vision of NBS.

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Harmful algal blooms and liver diseases: focusing on the areas near the four major rivers in South Korea

Cited by 21 publications

References 31 publications

Characterization of the gut microbiota of Nicaraguan children in a water insecure context

Characterization of the gut microbiota of Nicaraguan children in a water insecure context

Ecological River Health Assessment Using Multi-Metric Models in an Asian Temperate Region with Land Use/Land Cover as the Primary Factor Regulating Nutrients, Organic Matter, and Fish Composition

Barriers and Drivers for Mainstreaming Nature-Based Solutions for Flood Risks: The Case of South Korea

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