Seasonal changes of dissolved CO2 and its linkage with optical characteristics of DOM in groundwater in agricultural areas DOI

Pan Huo,

Pengcheng Gao

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 643, P. 131927 - 131927

Published: Sept. 1, 2024

Language: Английский

Mechanisms shaping dissolved organic matter and microbial community in lake ecosystems DOI Creative Commons
Katarina Kajan, Helena Osterholz, James Stegen

et al.

Water Research, Journal Year: 2023, Volume and Issue: 245, P. 120653 - 120653

Published: Sept. 19, 2023

Lakes are active components of the global carbon cycle and host a range processes that degrade modify dissolved organic matter (DOM). Through degradation DOM molecules synthesis new compounds, microbes in aquatic environments strongly continuously influence chemodiversity, which can feedback to microbial diversity. Developing better understanding biodiversity patterns emerge along spatial environmental gradients is one key objectives community ecology. A changing climate may affect ecological feedback, including those communities. To maintain function lake ecosystem predict cycling environment, it increasingly important understand coupling between unravel biotic abiotic mechanisms control structure communities lakes, we combined high-throughput sequencing ultra-high resolution mass spectrometry together with null modeling approach. The advantage models their ability evaluate relative influences stochastic deterministic assembly both assemblages. present study includes spatiotemporal signatures six temperate lakes contrasting continental Mediterranean climates during productive season. Different conditions nutrient sources characterized studied lakes. Our results have shown high covariance molecular-level diversity individual especially microeukaryotes free-living bacteria indicating dynamic feedback. We found differences climatic regions were mainly reflected at molecular formula-level microeukaryota community. Furthermore, using was governed by variable selection operating consistently within among In contrast, highly across different trophic status regions. Difference governing composition does not indicate weak these components, rather suggests distinct factors be influencing assemblages separately. Further DOM-microbe (or lack thereof) formulating predictive future ecology function.

Language: Английский

Citations

44
DOM Associates with Greenhouse Gas Emissions in Chinese Rivers under Diverse Land Uses DOI
Weilu Kang, Xiangang Hu,

Ruihong Feng

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(40), P. 15004 - 15013

Published: Oct. 2, 2023

Growing evidence indicates that rivers are hotspots of greenhouse gas (GHG) emissions and play multiple roles in the global carbon budget. However, terrestrial from land use river GHG remain largely unknown. We studied microbial composition, dissolved organic matter (DOM) properties, emission responses to different landcovers (n = 100). The bacterial community was mainly constrained by land-use intensity, whereas fungal controlled DOM chemical composition (e.g., with high photoreactivity). Anthropogenic stressors gross regional domestic product, total population) were main factors affecting chromophoric (CDOM). biodegradability exhibited a positive correlation CDOM contributed activity for transformation. Variations CO2 CH4 governed biodegradation or photomineralization derived autotrophic indirectly affected via changes properties water chemistry. Because offset some climatic benefits (or ocean) sinks, intensified urban inevitably alters cycling microclimate.

Language: Английский

Citations

24
Molecular insights into linkages among free-floating macrophyte-derived organic matter, the fate of antibiotic residues, and antibiotic resistance genes DOI

Ruihao Xiao,

Danlian Huang, Li Du

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 471, P. 134351 - 134351

Published: April 19, 2024

Language: Английский

Citations

15
Dissolved organic carbon spurs bacterial-algal competition and phosphorus-paucity adaptation: Boosting Microcystis' phosphorus uptake capacity DOI
Tingting Li, Longqian Xu, Wenxuan Li

et al.

Water Research, Journal Year: 2024, Volume and Issue: 255, P. 121465 - 121465

Published: March 13, 2024

Language: Английский

Citations

13
Influence of hydrological features on CO2 and CH4 concentrations in the surface water of lakes, Southwest China: A seasonal and mixing regime analysis DOI
Xiaoying Yang, Yongqiang Zhou,

Zhirong Yu

et al.

Water Research, Journal Year: 2024, Volume and Issue: 251, P. 121131 - 121131

Published: Jan. 11, 2024

Language: Английский

Citations

11
Anthropogenic dissolved organic matter accumulation fuels greenhouse gas diffusive emissions in urban lakes along trophic state levels DOI
Liuqing Zhang, Siyue Li

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 186, P. 474 - 485

Published: April 6, 2024

Language: Английский

Citations

10
Hydrological connectivity and dissolved organic matter impacts nitrogen and antibiotics fate in river-lake system before and after extreme wet season DOI
Yu Zhao,

Yuanmeng Song,

Lulu Zhang

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 378, P. 124743 - 124743

Published: March 2, 2025

Language: Английский

Citations

1
Unraveling the impacts of multiscale landscape patterns and socioeconomic development on water quality: A case study of the National Sustainable Development Agenda Innovation Demonstration Zone in Lincang City, Southwest China DOI Creative Commons

Xuefu Pu,

Qingping Cheng

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 51, P. 101660 - 101660

Published: Jan. 19, 2024

National Sustainable Development Agenda Innovation Demonstration Zone in Lincang City, Southwest China Revealing the current water quality status rivers and reservoirs its drivers is crucial to achieving United Nations Goal 6 (SDG 6). We assessed spatial-temporal dynamics influence of natural socioeconomic factors on index (WQI) parameters using redundancy analysis (RDA) partial least squares path model (PLSPM). The results indicate following. (1) annual average values WQI City from 2018 2020 were 92.26, 92.06, 92.45, respectively. spring, summer, autumn, winter 92.48, 90.38, 92.68, 93.49, seasonal levels good or higher. However, spatial heterogeneity exists for some City. (2) highly complex. landscape composition, configuration, pollutant discharges are key affecting annually seasonally, a scale dependence observed. (3) Chemical physical directly affect WQI, particularly at small scales (100 m 500 buffer zones). have strong inhibitory effect (−0.79, −0.78) (−0.56, −0.72), whereas weak promoting (0.05–0.13). Landscape composition configuration indirectly WQI. In contrast, pollution discharge impact through their chemical factors. These findings demonstrate that social interact multiple ways, impacting reservoirs. This interaction depends scale. Therefore, it consider appropriate distance future land use planning, design planning Moreover, controlling wastewater industrial agricultural activities domestic usage vital ensuring high quality.

Language: Английский

Citations

6
Photo-methanification of aquatic dissolved organic matters with different origins under aerobic conditions: Non-negligible role of hydroxyl radicals DOI

Jikang You,

Fei Liu,

Yongwu Wang

et al.

Water Research, Journal Year: 2024, Volume and Issue: 256, P. 121609 - 121609

Published: April 12, 2024

Language: Английский

Citations

5
Arsenic migration at the sediment-water interface of anthropogenically polluted Lake Yangzong, Southwest China DOI
Donglin Li, Fengqin Chang, Yang Zhang

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 879, P. 163205 - 163205

Published: March 31, 2023

Language: Английский

Citations

13