Cited by Variations in the concentration, source and flux of polycyclic aromatic hydrocarbons in sediments of the Pearl River Estuary: Implications for anthropogenic impacts

Dissimilatory nitrate reduction to ammonium has a competitive advantage over denitrification under nitrate-limited conditions DOI

Yixiao Liao,

Tengxia He,

Cerong Wang

et al.

Reviews in Environmental Science and Bio/Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Language: Английский

Citations

Exotic Spartina alterniflora invasion enhances sediment N-loss while reducing N retention in mangrove wetland DOI

Bin Wang, Xianbiao Lin

Geoderma, Journal Year: 2023, Volume and Issue: 431, P. 116362 - 116362

Published: Jan. 30, 2023

Wide and rapid Spartina alterniflora invasion has threatened the sustainability of coastal wetlands China, a significant impact on sediment biogeochemical cycle. However, effects exotic dissimilatory nitrates (NOx−) reduction processes mechanisms underlying these pathways in mangrove have not been well studied. Here, denitrification (DEN), anaerobic ammonium oxidation (ANA) nitrate to (DNRA) rates, contributions (DEN%, ANA%, DNRA%), associated functional genes (nirS, anammox 16S rRNA nrfA) controlling factors were investigated surface sediments (0–5 cm) communities ecotone Zhangjiang Estuary, China. Significant spatial differences DEN, DNRA, DEN%, DNRA% found among different plant (p < 0.05 for all). DEN is dominant pathway NOx− community (87–89 %) (75–78 %), while (41–51 DNRA (36–51 compete with each other community. Organic matter was most dominating factor rates. Without accounting confounding factors, significantly reduced nitrogen retention index (NIRI), causing large amount (N) loss wetlands. We estimated that increased N-loss (831.09 ± 55.16 t N yr−1) but (783.48 37.73 habitats China within last 40 years (1980–2020). Thus, enhances reducing wetlands, which may threaten buffer function wetland pools protection estuarine ecosystems.

Language: Английский

Citations

Responses of microbial communities and greenhouse gas production to land use change in mangrove wetland sediments DOI

Xianbiao Lin, Biao Zhu, Yongyi Peng

et al.

Limnology and Oceanography, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract Tidal wetland reclamation is a worldwide issue that profoundly alters ecological functions and ecosystem service provisions; however, its impacts on sediment microbial communities remain poorly understood. Here, we investigated the spatial seasonal patterns of greenhouse gas (GHG) production in response to land use change mangrove wetlands elucidated underlying mechanisms by integrating environmental parameters community characteristics. In time period studied, substantially reduced organic matter content, richness diversity, CO 2 rates. Converting mangroves drier cover types, namely orchard vegetable field, significantly diminished reducing substrates (sulfide, Fe 2+ , NH 4 + ), network complexity stability, CH rates, while increasing N O contrast, these showed opposite trend following conversion flooded aquaculture pond. Overall GHG rate was 399.8 mg e kg −1 d which respectively decreased 68.83%, 69.86%, 30.84% orchard, Microbial stability were strongly related rates O, rather than can be better indicators specialized (CH production). Therefore, preserving “interaction” could important mitigate negative effects diversity loss caused human activities aquatic environments. Future research should consider conditions composition, interactions, gain comprehensive understanding functions.

Language: Английский

Citations

Long-term nitrogen fertilization-induced enhancements of acid hydrolyzable nitrogen are mainly regulated by the most vital microbial taxa of keystone species and enzyme activities DOI

Meiqi Chen,

Jisheng Xu,

Zengqiang Li

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 874, P. 162463 - 162463

Published: Feb. 25, 2023

Language: Английский

Citations

The external/internal sources and sinks of greenhouse gases (CO2, CH4, N2O) in the Pearl River Estuary and adjacent coastal waters in summer DOI

Bin Chen, Ehui Tan, Wenbin Zou

et al.

Water Research, Journal Year: 2023, Volume and Issue: 249, P. 120913 - 120913

Published: Nov. 22, 2023

Language: Английский

Citations

Advances in phytoplankton population ecology in the Pearl river estuary DOI

Wenlong Chen, Fang Guo,

Weijie Huang

et al.

Frontiers in Environmental Science, Journal Year: 2023, Volume and Issue: 11

Published: Jan. 27, 2023

Phytoplankton is an important primary producer of the estuarine ecosystem, which essential for biogeochemical cycle water elements and nutrient transfer. The Pearl River estuary (PRE) a dynamically complex estuary, environment PRE significantly impacted by anthropogenic activities, variation phytoplankton community structure in are complex. This review aims to compare species, species diversity, abundance characteristics from 1980s 2020s, evaluate overall trend PRE, discuss main environmental factors affecting growth PRE. data past 40 years showed that number decreased ( p < 0.05). There was no significant difference at 10-year scale, however, fluctuation range has increased. Under conditions decreasing abundance, diversity downward trend. In addition, dominant nearshore waters were relatively homogenous, higher than open waters, suggested human activities have great influence. can form basis facilitating health management ecosystem. Further, relevant guidelines be developed implemented promoting ecological Guangdong-Hong Kong-Macao Greater Bay Area ensuring its sustainable development.

Language: Английский

Citations

Bacterial community in the metal(loid)-contaminated marine vertical sediments of Jinzhou Bay: Impacts and adaptations DOI

Yongbin Li, Rui Zhang,

Guoqing Ma

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 923, P. 171180 - 171180

Published: Feb. 24, 2024

Language: Английский

Citations

Denitrification dominates dissimilatory nitrate reduction across global natural ecosystems DOI

Danli Deng,

Gang He, Bangjing Ding

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

Abstract Denitrification, anaerobic ammonium oxidation (anammox), and dissimilatory nitrate reduction to (DNRA) are three competing processes of microbial that determine the degree ecosystem nitrogen (N) loss versus recycling. However, global patterns drivers relative contributions these N cycling soil or sediment remain unknown, limiting our understanding balance management. Here, we compiled a dataset 1570 observations from wide range terrestrial aquatic ecosystems. We found denitrification contributed up 66.1% total globally, being significantly greater in estuarine coastal Anammox DNRA could account for 12.7% 21.2% reduction, respectively. The contribution increased with longitude, while anammox decreased. local environmental factors controlling included concentrations organic carbon, ammonium, nitrate, ferrous iron. Our results underline dominant role over transformation, which is crucial improving current cycle model achieving sustainable

Language: Английский

Citations

High importance of coupled nitrification-denitrification for nitrogen removal in a large periodically low-oxygen estuary DOI

Dengzhou Gao, Cheng Liu, Xiaofei Li

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 846, P. 157516 - 157516

Published: July 21, 2022

Language: Английский

Citations

Shifts in the high-resolution spatial distribution of dissolved N2O and the underlying microbial communities and processes in the Pearl River Estuary DOI

Xiang Cheng, Yue Dong, Fuqiang Fan

et al.

Water Research, Journal Year: 2023, Volume and Issue: 243, P. 120351 - 120351

Published: July 13, 2023

Language: Английский

Citations