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Eutrophication

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Eutrophication leads to the formation of a sulfide-rich deep-water layer in Lake Sevan, Armenia.

Khoren Avetisyan, Natella Mirzoyan, Rayford B Payne, Vardan Hayrapetyan, Alexey Kamyshny,

Lake Sevan is a meso-eutrophic water body, which was severely impacted by anthropogenic level decrease, pollution and eutrophication during the last century. Starting in the 1970s, these processes resulted in the formation of an oxygen-depleted hypolimnion during summer-autumn stratification of the lake. In this work, we demonstrate for the first ... Read more >>

Isotopes Environ Health Stud (Isotopes in environmental and health studies)
[2021, 57(5):535-552]

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Valorization of carbon dioxide and waste (Derived from the site of Eutrophication) into syngas using a catalytic thermo-chemical platform.

Jung-Hun Kim, Sungyup Jung, Jong-Oh Kim, Young Jae Jeon, Eilhann E Kwon,

Global warming increases a chance of eutrophication, and such fact offers that unhygienic organic waste materials (OWMs) in water must be treated. Hence, this study laid emphasis on the thermal-chemical (pyrolysis) process to establish a rapid valorization platform for OWMs. Indeed, OWMs were collected from the eutrophication site, and OWMs ... Read more >>

Bioresour Technol (Bioresource technology)
[2021, 341:125858]

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Eutrophication likely prompts metal bioaccumulation in edible clams.

Liqiang Zhao, Feng Yang, Xiwu Yan,

Coastal eutrophication is an indisputable reality and becoming a worldwide concern. However, whether and how eutrophication affects metal bioaccumulation in marine bivalves have not yet been elucidated. Here, we present the potential influence of coastal eutrophication on metal bioaccumulation in the Manila clam Ruditapes philippinarum. The degree of coastal eutrophication ... Read more >>

Ecotoxicol Environ Saf (Ecotoxicology and environmental safety)
[2021, 224:112671]

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Water Quality Analysis and Evaluation of Eutrophication in a Swamp Wetland in the Permafrost Region of the Lesser Khingan Mountains, China.

Lina Che, Luhe Wan,

Wuyiling Nature Reserve is located at the edge of a frozen soil area and has abundant vegetation resources. It is an important area for evaluating the impact of frozen soil degradation on the environment. Analyzing the water quality and eutrophication characteristics of different swamps and water bodies can provide a ... Read more >>

Bull Environ Contam Toxicol (Bulletin of environmental contamination and toxicology)
[2021, :]

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Anti-Vibrio dibutyl phthalate from marine-derived Streptomyces sp. S073.

Yunwen Bi, Ganxing Liu, Qiushi Yu, Qiting Liang, Zhongheng Xu, Miao Cui, Qizhong Zhang, Delin Xu,

Marine Streptomyces S073 was previously shown to have strong anti-Vibrio activity, and its antibacterial mechanism was proposed to be associated with siderophore-mediated iron competition and other antagonistic agents. In this study, anti-Vibrio compounds produced by S073 were isolated by bioassay-guided fractionation using column chromatography and HPLC, and the target compound ... Read more >>

Res Vet Sci (Research in veterinary science)
[2021, 140:198-202]

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Hypolimnion behavior of technetium in freshwater at various stages of eutrophication.

K E German, A V Safonov, D A Zelenina, A V Sitanskaya, K A Boldyrev, E V Belova,

The article presents a study of various mechanisms of hypolimnion technetium behavior which occur at different stages of waterbodies eutrophication. Eutrophication stage was found to be positively correlated with the rate of <sup>99</sup>Tc removal from water phase. The study identified a complex biogeochemical mechanism of technetium behavior. Planktonic phototrophic community ... Read more >>

J Environ Radioact (Journal of environmental radioactivity)
[2021, 237:106716]

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A Method for Studying Acidification and Eutrophication Potentials of a Residential Neighbourhood

MODESTE Kameni Nematchoua, Somayeh Asadi, Donghyun Rim, Esther Obonyo, Sigrid Reiter,

Acidification and Eutrophication are two environmental impacts that have a significant effect on air pollution and human health. The quantitative analysis of these two impacts remains hitherto unknown at the scale of new neighborhoods. The main purpose of this research is to evaluate, analysis and compare the acidification and eutrophication ... Read more >>

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Assessment of eutrophication and nitrogen and phosphorus carrying capacity before and after removing pen culture (2013-2018) in Lake Changhu, China.

Xuemei Li, Tingbing Zhu, Yongfeng He, Xingbing Wu, Yongjiu Zhu, Deguo Yang,

In this study, the eutrophication levels and nitrogen and phosphorus carrying capacities of Lake Changhu in Jingzhou, Hubei Province, China, were measured using the trophic level index (TLI) and Dillon model for the first time. The measurements were taken before (2013 and 2015) and after (2017 and 2018) the removal ... Read more >>

Environ Sci Pollut Res Int (Environmental science and pollution research international)
[2021, :]

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Relationships Between Benthic Infauna and Groundwater Eutrophication On A Sandy Beach in Southern Brazil

Luciano Lorenzi, Devon Gebauer Mayer, Bruna Conte Reginato, Paulo Roberto Pagliosa, David Valença Dantas, Eduardo Gentil, Vladimir Toro Valencia,

Urban expansion in Brazilian coastal zones has caused various anthropic impacts on coastal marine ecosystems that have resulted from unorganized use and the lack of infrastructure projects. The inadequate disposal of domestic and industrial effluents in coastal waterbodies is notable, which can cause severe environmental problems. For sandy beaches, the ... Read more >>

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Synergistic effects of warming and eutrophication alert zooplankton predator-prey interactions along the benthic-pelagic interface.

Huan Zhang, Peiyu Zhang, Huan Wang, Jorge García Molinos, Lars-Anders Hansson, Liang He, Min Zhang, Jun Xu,

Contemporary evidence suggests that climate change and other co-occurring large-scale environmental changes, such as eutrophication, will have a considerable impact on aquatic communities. However, the interactions of these environmental changes on trophic interactions among zooplankton remain largely unknown. Here we present results of a mesocosm experiment examining how a couple ... Read more >>

Glob Chang Biol (Global change biology)
[2021, :]

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Diet and food selection by fish larvae in turbid and clear water shallow temperate lakes.

Carolina Trochine, Casper Risholt, Majbritt O Schou, Torben L Lauridsen, Lene Jacobsen, Christian Skov, Martin Søndergaard, Søren Berg, Kirsten S Christoffersen, Erik Jeppesen,

Fish larvae play an important structuring role for their prey and show ontogenetic shifts in diet. Changes in diet differ between species and habitats and may also be affected by turbidity (eutrophication). We investigated the diet (stomach content) and the food selection (ratio of ingested prey and prey availability) of ... Read more >>

Sci Total Environ (The Science of the total environment)
[2021, 804:150050]

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Life Cycle Assessment of Leachate Treatment Strategies.

Lingyue Zhang, Hao Bai, Yawei Zhang, Yang Wang, Dongbei Yue,

Increasingly stringent regulations for leachate discharge call for leachate treatment plants (LTPs) to increase their treatment capacity by adopting membrane treatment processes to remove nitrogen and organics beyond conventional biological treatment processes. This study developed four common treatment strategies based on the existing operation and construction conditions of seven representative ... Read more >>

Environ Sci Technol (Environmental science & technology)
[2021, :]

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Nonlinear pattern and algal dual-impact in N2O emission with increasing trophic levels in shallow lakes.

Yiwen Zhou, Xiaoguang Xu, Kang Song, Senbati Yeerken, Min Deng, Lu Li, Shohei Riya, Qilin Wang, Akihiko Terada,

Shallow lakes are considered important contributors to emissions of nitrous oxide (N<sub>2</sub>O), a powerful greenhouse gas, in aquatic ecosystems. There is a large degree of uncertainty regarding the relationship between N<sub>2</sub>O emissions and the progress of lake eutrophication, and the mechanisms underlying N<sub>2</sub>O emissions are poorly understood. Here, N<sub>2</sub>O emission ... Read more >>

Water Res (Water research)
[2021, 203:117489]

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Quantile regression illuminates the successes and shortcomings of long-term eutrophication remediation efforts in an urban river system.

Rose T Determan, Jeffrey D White, Lawrence W McKenna,

Despite massive financial investment in mitigation, eutrophication remains a major water quality problem and management priority. Eutrophication science-well established for lakes-is not as well developed for rivers, and scientific understanding of how rivers respond to eutrophication management is far more limited. Long-term data are required to evaluate progress, but such ... Read more >>

Water Res (Water research)
[2021, 202:117434]

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Eutrophication increases deterministic processes and heterogeneity of co-occurrence networks of bacterioplankton metacommunity assembly at a regional scale in tropical coastal reservoirs.

Jiexiang Zhang, Ye Chen, Yong Huo, Jia Guo, Linglin Wan, Zhe Lu, Qinglong L Wu, Erik Jeppesen, Bo-Ping Han, Lijuan Ren,

Understanding microbial metacommunity assembly and the underlying methanisms are fundamental objectives of aquatic ecology. However, little is known about how eutrophication, the primary water quality issue of aquatic ecosystems, regulates bacterioplankton metacommunity assembly at a regional scale in reservoirs. In this study, we applied a metacommunity framework to study bacterioplankton ... Read more >>

Water Res (Water research)
[2021, 202:117460]

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Phytoplankton nutrient use and CO2 dynamics responding to long-term changes in riverine N and P availability.

Dohee Kim, Ju-Hee Lim, Yewon Chun, Omme Kulsum Nayna, Most Shirina Begum, Ji-Hyung Park,

Long-term trends in riverine nutrient availability have rarely been linked to both phytoplankton composition and functioning. To explore how the changing availability of N and P affects not only phytoplankton abundance and composition but also the resource use efficiency of N, P, and CO<sub>2</sub>, a 25-year time series of water ... Read more >>

Water Res (Water research)
[2021, 203:117510]

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Save reservoirs of humid subtropical cities from eutrophication threat.

Meijie Liu, Xiaoyu Lei, Yanyan Zhou, Jingsi Gao, Yun Zhou, Linlin Wang, Jia Zhu, Xian-Zhong Mao,

Reservoir water is the most important freshwater resource for many cities, especially in densely populated humid subtropical areas. Economic growth, population increase, and urbanization have been putting reservoir water of Shenzhen (China), a humid subtropical city, under severe threat of eutrophication and water supply shortage. In this study, we focused ... Read more >>

Environ Sci Pollut Res Int (Environmental science and pollution research international)
[2021, :]

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Homogenization of diatom assemblages is driven by eutrophication in tropical reservoirs.

Stéfano Zorzal-Almeida, Elaine C Rodrigues Bartozek, Denise C Bicudo,

Eutrophication is one of the most widespread causes of biotic homogenization in freshwater ecosystems. Biotic homogenization can be characterized as reductions in local diversity (alpha) and occupation of available niches by more generalist species. Beta diversity is expected to decrease in more homogeneous communities, however, there is no consensus on ... Read more >>

Environ Pollut (Environmental pollution (Barking, Essex : 1987))
[2021, 288:117778]

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Characterizing Trophic State in Tropical/Subtropical Reservoirs: Deviations among Indexes in the Lower Latitudes.

Davi Gasparini Fernandes Cunha, Nícolas Reinaldo Finkler, Marta Condé Lamparelli, Maria do Carmo Calijuri, Walter K Dodds, Robert E Carlson,

Trophic state indexes (TSI) guide management strategies regarding eutrophication control worldwide. Such indexes usually consider chlorophyll-a (Chl-a), total phosphorus (TP), and Secchi disk depth (SDD) as independent variables for estimating aquatic productivity and the degree of impairment. TSIs for each of these components are frequently averaged to produce a single ... Read more >>

Environ Manage (Environmental management)
[2021, 68(4):491-504]

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Application of Machine Learning for eutrophication analysis and algal bloom prediction in an urban river: A 10-year study of the Han River, South Korea.

Quang Viet Ly, Xuan Cuong Nguyen, Ngoc C Lê, Tien-Dung Truong, Thu-Huong T Hoang, Tae Jun Park, Tahir Maqbool, JongCheol Pyo, Kyung Hwa Cho, Kwang-Sik Lee, Jin Hur,

The increasing release of nutrients to aquatic environments has led to great concern regarding eutrophication and the risk of unwanted algal blooms. Based on observational data of 20 water quality parameters measured on a monthly basis at 40 stations from 2011 to 2020, this study applied different Machine Learning (ML) ... Read more >>

Sci Total Environ (The Science of the total environment)
[2021, 797:149040]

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Impacts of storm events on chlorophyll-a variations and controlling factors for algal bloom in a river receiving reclaimed water.

Anran Liao, Dongmei Han, Xianfang Song, Shengtian Yang,

Harmful algal bloom is prevalent in the reclaimed-water-source (RWS) river caused by the excessive nutrient's inputs. Rainfall water may be the sole nutrient-diluted water source for the RWS river. However, the effects of storm events on the algal bloom in the RWS river are poorly understood. This study presents chlorophyll-a ... Read more >>

J Environ Manage (Journal of environmental management)
[2021, 297:113376]

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Comparison of spatiotemporal carbon, nitrogen, and phosphorus burial in two plateau lacustrine sediments: implication for N and P control.

Xiaolei Wang, Hao Yang, Bin Xue, Mingli Zhang, Benjun Yang, Changchun Huang,

The long-term accumulation, burial and release of nutrients, such as carbon (C), nitrogen (N), and phosphorus (P) in lacustrine sediments are responsible for the global lake eutrophication. Interpretation of the spatiotemporal sedimentary record of nutrients (C, N, and P) in contrasting trophic level of lakes is helpful for understanding the ... Read more >>

Environ Sci Pollut Res Int (Environmental science and pollution research international)
[2021, :]

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Landscape heterogeneity buffers biodiversity of simulated meta-food-webs under global change through rescue and drainage effects.

Remo Ryser, Myriam R Hirt, Johanna Häussler, Dominique Gravel, Ulrich Brose,

Habitat fragmentation and eutrophication have strong impacts on biodiversity. Metacommunity research demonstrated that reduction in landscape connectivity may cause biodiversity loss in fragmented landscapes. Food-web research addressed how eutrophication can cause local biodiversity declines. However, there is very limited understanding of their cumulative impacts as they could amplify or cancel ... Read more >>

Nat Commun (Nature communications)
[2021, 12(1):4716]

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European fish-based assessment reveals high diversity of systems for determining ecological status of lakes.

David Ritterbusch, Petr Blabolil, Jan Breine, Tibor Erős, Thomas Mehner, Mikko Olin, Graeme Peirson, Pietro Volta, Sandra Poikane,

Triggered by the adoption of the Water Framework Directive, a variety of fish-based systems were developed throughout Europe to assess the ecological status of lakes. This paper provides a comprehensive overview of all existing systems and summarizes sampling methods, fish community traits (metrics) and the relevant anthropogenic pressures assessed by ... Read more >>

Sci Total Environ (The Science of the total environment)
[2021, 802:149620]

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Globally Consistent Assessment of Coastal Eutrophication

Elígio Maúre, Genki Terauchi, Joji Ishizaka, Nicholas Clinton, Michael DeWitt,

Eutrophication associated with increasing anthropogenic nutrient loading is an emerging global concern. Often, eutrophication is concomitant with negative impacts on ecosystems and human well-being. Nevertheless, the impacts and the extent of eutrophication are limited to regions with dedicated monitoring programmes. Here we introduce the Global Eutrophication Watch, the first global ... Read more >>

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