Recent advancement in water quality indicators for eutrophication in global freshwater lakes

Environmental Research Letters, Journal Year: 2023, Volume and Issue: 18(6), P. 063004 - 063004

Published: April 26, 2023

Abstract Eutrophication is a major global concern in lakes, caused by excessive nutrient loadings (nitrogen and phosphorus) from human activities likely exacerbated climate change. Present use of indicators to monitor assess lake eutrophication restricted water quality constituents (e.g. total phosphorus, nitrogen) does not necessarily represent environmental changes the anthropogenic influences within lake’s drainage basin. Nutrients interact multiple ways with climate, basin conditions socio-economic development, point-source, diffuse source pollutants), systems. It therefore essential account for complex feedback mechanisms non-linear interactions that exist between nutrients ecosystems assessments. However, lack set holistic understanding challenges such assessments, addition limited monitoring data available. In this review, we synthesize main freshwater basins only include but also sources, biogeochemical pathways responses emissions. We develop new causal network (i.e. links indicators) using DPSIR (drivers-pressure-state-impact-response) framework highlights interrelationships among provides perspective dynamics basins. further review 30 key drivers pressures seven cross-cutting themes: (i) hydro-climatology, (ii) socio-economy, (iii) land use, (iv) characteristics, (v) crop farming livestock, (vi) hydrology management, (vii) fishing aquaculture. This study indicates need more comprehensive systems, guide expansion networks, support integrated assessments manage eutrophication. Finally, proposed can be used managers decision-makers realistic targets sustainable management achieve clean all, line Sustainable Development Goal 6.

Language: Английский

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Molecular insights into the microbial degradation of sediment-derived DOM in a macrophyte-dominated lake under aerobic and hypoxic conditions

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 916, P. 170257 - 170257

Published: Jan. 21, 2024

Language: Английский

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Enhancing phosphorus source apportionment in watersheds through species-specific analysis

Water Research, Journal Year: 2024, Volume and Issue: 253, P. 121262 - 121262

Published: Feb. 7, 2024

Language: Английский

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Global trends and regime state shifts of lacustrine aquatic vegetation

The Innovation, Journal Year: 2025, Volume and Issue: 6(3), P. 100784 - 100784

Published: Jan. 18, 2025

Aquatic vegetation (AV) is vital for maintaining the health of lake ecosystems, with submerged aquatic (SAV) and floating/emergent (FEAV) representing clear shaded states, respectively. However, global SAV FEAV dynamics are poorly understood due to data scarcity. To address this gap, we developed an innovative AV mapping algorithm workflow using satellite imagery (1.4 million Landsat images) from 1989 2021 created a database across 5,587 shallow lakes. Our findings suggest that covers 108,186 km2 on average globally, accounting 28.9% (FEAV, 15.8%; SAV, 13.1%) total area. Over two decades, observed notable transition: decreased by 30.4%, while increased 15.6%, leading substantial net loss AV. This trend indicates shift conditions, increasingly progressing toward turbid states dominated phytoplankton. We found human-induced eutrophication was primary driver change until early 2010s, after which warming rising temperatures became dominant drivers. These trends serve as warning sign deteriorating worldwide. With future climate intensified eutrophication, these ongoing pose significant risk disrupting ecosystems.

Language: Английский

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Comprehensive assessment of urban lake wetlands in the Jiangnan water network: Implementation of ecosystem health models

Journal for Nature Conservation, Journal Year: 2025, Volume and Issue: 84, P. 126820 - 126820

Published: Jan. 5, 2025

Language: Английский

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Insight into the characterization of dissolved organic matter in shallow lakes with different trophic states and their net photo-generation capacity of reactive oxygen species

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123204 - 123204

Published: Jan. 1, 2025

Language: Английский

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Nutrients and not temperature are the key drivers for cyanobacterial biomass in the Americas

Harmful Algae, Journal Year: 2022, Volume and Issue: 121, P. 102367 - 102367

Published: Dec. 16, 2022

Language: Английский

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The crucial influence of trophic status on the relative requirement of nitrogen to phosphorus for phytoplankton growth

Water Research, Journal Year: 2022, Volume and Issue: 222, P. 118868 - 118868

Published: July 14, 2022

Language: Английский

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Changes in China’s river water quality since 1980: management implications from sustainable development

npj Clean Water, Journal Year: 2023, Volume and Issue: 6(1)

Published: June 6, 2023

Abstract Human activities and climate change threaten water quality in China’s rivers. We simulated the monthly concentrations of riverine total nitrogen (TN), ammonia-nitrogen (NH 3 -N), phosphorus (TP), chemical oxygen demand (COD Mn ) 613 sub-watersheds nation’s 10 major river basins during 1980–2050 period based on a 16-year (2003–2018) monitoring dataset using stacking machine-learning models. The results showed that improved markedly, except for TN concentration, which was probably due to lack control target assessment system. Quantitative analysis indicated anthropogenic factors were primary controls compared with climatic drivers geographical TN, TP, NH -N concentrations. On basis all 17 sustainable development goals (SDGs) relevant China, resources, environment, aquatic ecology security should be considered collectively achieve improvements ecological status

Language: Английский

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Harmful Cyanobacterial Blooms: Biological Traits, Mechanisms, Risks, and Control Strategies

Annual Review of Environment and Resources, Journal Year: 2023, Volume and Issue: 48(1), P. 123 - 147

Published: Sept. 8, 2023

Harmful cyanobacterial blooms (CyanoHABs) impact lakes, estuaries, and freshwater reservoirs worldwide. The duration, severity, spread of CyanoHABs have markedly increased over the past decades will likely continue to increase. This article addresses universal phenomena occurring in many ecosystems Based on analysis ecophysiological traits bloom-forming cyanobacteria their interactions with environmental processes, we summarize decipher driving forces leading initiation, outbreak, persistence blooms. Due coupling effects eutrophication, rising CO 2 levels global warming, a multidisciplinary joint research approach is critical for better understanding CyanoHAB phenomenon its prediction, remediation, prevention. There an urgent need evaluate guide proper use bloom control techniques at large scales, using science-based environmentally friendly approaches.

Language: Английский

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