Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123735 - 123735
Published: April 1, 2025
Language: Английский
Sustainability, Journal Year: 2025, Volume and Issue: 17(2), P. 581 - 581
Published: Jan. 14, 2025
This study is a preliminary assessment of the emerging and persistent contaminants (EPCs) in ecologically sensitive Kamphuan Stream Southern Thailand. The analysis 15 compounds revealed that EPC concentrations below main community were significantly elevated during rainy season, with highest levels found for sucralose (9070 ng/L), metformin (6250 fexofenadine (5110 gabapentin (3060 ng/L). These spatiotemporal patterns highlight episodic nature contamination driven by urban stormwater runoff, where rainfall events create temporary pathways transport EPCs to streams draining into coastal ecosystems. Maximum three pharmaceuticals (diclofenac, gemfibrozil, ibuprofen), as well sucralose, caffeine, fenobucarb, exceeded general predicted no-effect (PNECs) marine or fresh waters; however, these not persistent. Limited sampling across campaigns constrained ability fully characterize dynamics this issue through statistical inference. Furthermore, risk assessments absence locally derived PNECs tropical ecosystems organisms, along limited standardization PNEC determination methodologies, making definitive conclusions challenging. A comparative five priority metformin, naproxen, fluoxetine) against existing data from East Southeast Asia underscores need further research evaluate ecological risks posed diverse rivers streams. Future studies should focus on greatest importance, investigate their transformation products, identify sources pathways, assess environmental aquatic
Language: Английский
Citations
1
Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 378, P. 124743 - 124743
Published: March 2, 2025
Language: Английский
Citations
1
The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 974, P. 179184 - 179184
Published: March 25, 2025
Language: Английский
Citations
0
Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16
Published: April 11, 2025
Intensified agricultural and urban activities have exacerbated nitrogen pollution, posing a severe threat to freshwater ecosystems, particularly under intensified urbanization activities. This study systematically examined Baiyangdian Lake (BYD) its principal inflowing rivers, namely Fu River (FH), Baigouyin (BGY), Xiaoyi (XY) characterize the spatio-temporal distribution, primary sources, impact on sediment microbial community structure. Results indicated pronounced seasonal variations in both pollution loads with riverine levels rising markedly from dry season (May) wet (August). Atmospheric deposition accounted for 43.9% of input season, whereas fertilizers sewage contributed 23.3 26.4%, respectively. Additionally, communities exhibited distinct temporal spatial patterns, significantly higher diversity species richness being during season. The, composition shifted, as evidenced by decline Proteobacteria increases Firmicutes Actinobacteriota . River-lake connectivity emerged critical factor, FH displaying notably index compared BGY XY rivers. Structural equation modeling (SEM) analysis further revealed that river-lake was positively correlated negatively α-diversity. These findings demonstrated directly influenced concentrations, which turn indirectly modulated diversity.
Language: Английский
Citations
0
Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123735 - 123735
Published: April 1, 2025
Language: Английский
Citations
0