Assessing the sources and dynamics of organic matter in a high human impact bay in the northern Beibu Gulf: Insights from stable isotopes and optical properties DOI Creative Commons
Xuan Lü, Qibin Lao, Fajin Chen

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: Nov. 22, 2022

Severe human activities in coastal areas have greatly impacted the sources and biogeochemical behaviors of organic matter (OM), including particulate OM (POM) dissolved (DOM). However, few studies incorporated indices POM DOM to address this issue. Here, a dataset combination stable isotopes carbon nitrogen optical properties was presented Xi Bay, semi-enclosed bay with highly developing industrial port Beibu Gulf, South China, reveal origin, distribution, fate during rainy season. In upper bay, depleted δ 13 C suggested that (POC) mainly originated from terrestrial sources. negative relationship between chromophoric (CDOM) (PN) bacterial-mediated decomposition may be primary source CDOM. The correlation humic-like fluorescent components (C1 C2) salinity those two were affected by input. significant protein-like component (C3) Chl C3 derived phytoplankton production bay. lower increase values indicated an increased contribution marine POC. high levels CDOM due (fresh) POM. low C1 C2 might dilution seawater, enhanced production. addition, enhancement 15 N both bays serious pollution This study highlights biological fueled excess nutrients is dominant dynamic process impact Gulf.

Language: Английский

Spatial heterogeneity of sedimentary organic matter sources in the Yangtze River estuary: Implications from fatty acid biomarkers DOI
Yunhui Wang, Ni Su, Ergang Lian

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 201, P. 116249 - 116249

Published: March 13, 2024

Language: Английский

Citations

1
First Report on the Trophic Transfer and Priority List of Liquid Crystal Monomers in the Pearl River Estuary DOI

Yiye Jiang,

Yan‐Hong Zeng, Ling Long

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(36), P. 16131 - 16141

Published: Aug. 27, 2024

Liquid crystal monomers (LCMs) are emerging organic pollutants due to their potential persistence, toxicity, and bioaccumulation. This study first characterized the levels compositions of 19 LCMs in organisms Pearl River Estuary (PRE), estimated bioaccumulation trophic transfer potential, identified priority contaminants. were generally accumulated from sediment, LCM concentrations all ranged 32.35 1367 ng/g lipid weight. The main biphenyls analogues (BAs) (76.6%), followed by cyanobiphenyls (CBAs) (15.1%), least fluorinated (FBAs) (11.2%). most abundant BAs, FBAs, CBAs 1-(4-propylcyclohexyl)-4-vinylcyclohexane 1-ethoxy-2,3-difluoro-4-(4-(4-propylcyclohexyl) cyclohexyl) benzene (EDPBB, 10.1%), 4'-propoxy-4-biphenylcarbonitrile (5.1%), respectively. niche studies indicated that PRE food web was composed terrestrial-based diet marine chains. Most exhibited biodilution chains, except for EDPBB 4,4'-bis(4-propylcyclohexyl) biphenyl (BPCHB). hydrophobicity, position fluorine substitution LCMs, biological habits may be important factors affecting LCMs. BPCHB, 1-(prop-1-enyl)-4-(4-propylcyclohexyl) cyclohexane, as reports processes mechanisms biomonitoring PRE.

Language: Английский

Citations

1
Unraveling the sources of organic matter in suspended particulates and sediment in a closed inland lake using stable isotope fingerprinting DOI Creative Commons

Xiaohui Ren,

Ruihong Yu,

Jianfang Kang

et al.

International Journal of Sediment Research, Journal Year: 2024, Volume and Issue: 39(3), P. 421 - 434

Published: June 1, 2024

Language: Английский

Citations

1
Source, transformation and degradation of particulate organic matter and its connection to microbial processes in Jiaozhou Bay, North China DOI
Bu Zhou, Huamao Yuan, Jinming Song

et al.

Estuarine Coastal and Shelf Science, Journal Year: 2021, Volume and Issue: 260, P. 107501 - 107501

Published: July 8, 2021

Language: Английский

Citations

9
Assessing the sources and dynamics of organic matter in a high human impact bay in the northern Beibu Gulf: Insights from stable isotopes and optical properties DOI Creative Commons
Xuan Lü, Qibin Lao, Fajin Chen

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: Nov. 22, 2022

Severe human activities in coastal areas have greatly impacted the sources and biogeochemical behaviors of organic matter (OM), including particulate OM (POM) dissolved (DOM). However, few studies incorporated indices POM DOM to address this issue. Here, a dataset combination stable isotopes carbon nitrogen optical properties was presented Xi Bay, semi-enclosed bay with highly developing industrial port Beibu Gulf, South China, reveal origin, distribution, fate during rainy season. In upper bay, depleted δ 13 C suggested that (POC) mainly originated from terrestrial sources. negative relationship between chromophoric (CDOM) (PN) bacterial-mediated decomposition may be primary source CDOM. The correlation humic-like fluorescent components (C1 C2) salinity those two were affected by input. significant protein-like component (C3) Chl C3 derived phytoplankton production bay. lower increase values indicated an increased contribution marine POC. high levels CDOM due (fresh) POM. low C1 C2 might dilution seawater, enhanced production. addition, enhancement 15 N both bays serious pollution This study highlights biological fueled excess nutrients is dominant dynamic process impact Gulf.

Language: Английский

Citations

4