Effects of Stocking Density of Filter-Feeding Fishes on Water Quality and Bacterial Community in Rice–Crayfish Polyculture System DOI Open Access
Yuanyuan Zhang,

Liangjie Zhao,

Jiaoyang Duan

et al.

Water, Journal Year: 2024, Volume and Issue: 16(16), P. 2296 - 2296

Published: Aug. 14, 2024

To evaluate the effects of filter-feeding fishes on water quality and bacterial community in rice–crayfish coculture system, four different stocking densities bighead carp (0, 500, 1000, 1500 ind./200 m2) were set up systems. Water samples systems collected biweekly to detect dissolved oxygen (DO), temperature (T), potential Hydrogen (pH), ammonia nitrogen (NH4+-N), nitrite (NO2−-N), nitrate (NO3−-N), total (TN), phosphorus (TP), Chlorophyll-a (Chl-a); was analyzed simultaneously, then correlation between microorganisms studied. The results showed that concentrations TN, TP, NO2−-N, NH4+-N decreased while DO NO3−-N increased along with breeding process. NO3−-N, important environmental factors affecting structure (p < 0.05). Bighead had an impact diversity, richness, evenness communities dominant bacteria density groups Proteobacteria, Actinomycetes, Bacteroidetes, Cyanobacteria. abundance Bacteroidea but reduced Cyanobacteria, Proteobacteria. introduction promoted conversion phosphorus, reducing risk cyanobacterial blooms. Group 1000 m2 exhibited best effect removal from body.

Language: Английский

Non-synergistic effects of microplastics and submerged macrophytes on sediment microorganisms involved in carbon and nitrogen cycling DOI

Xueyuan Gao,

Saibo Yuan,

Xiaowei Li

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126213 - 126213

Published: April 1, 2025

Language: Английский

Citations

0
Tire Rubber Antioxidant 6PPD and 6PPD-quinone Disrupt the Energy Supply and Lipid Metabolism of Earthworms DOI
Ruiying Shi, Yanyu Bao, Weitao Liu

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

With the increase in traffic due to urbanization, tire wear particles (TWPs) derived compounds persistently accumulate soil environment. This study addresses critical knowledge gaps regarding ecotoxicological effects of TWP-derived contaminants, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and its precursor, 6PPD-quinone (6PPD-Q), on soil-dwelling organisms. The findings demonstrated that 6PPD-Q accumulated at a higher concentration (6.77 ± 0.124 ng/g) earthworms (Eisenia fetida) compared 6PPD (5.41 0.002 ng/g), triggering more severe oxidative stress cellular homeostatic imbalance. Specifically, 100 ng/g significantly elevated reactive oxygen species (ROS) levels by 180.77% suppressed acetylcholinesterase (AchE) Ca2+-ATPase activities 17.14% 44.70%, respectively. Notably, uniquely disrupted nitrogen balance disturbed energy supply strongly inhibiting fatty acid degradation peroxisome proliferator-activated receptor (PPAR) signaling pathways. Additionally, profoundly altered abundance key microbes microbial network stability, affecting intestinal functions such as bile secretion, hormone synthesis, lipid digestion, thus exacerbating metabolic imbalance earthworms. deciphers molecular toxicity mechanisms contaminants earthworms, providing crucial insights for developing risk assessment frameworks mitigation strategies ecosystems.

Language: Английский

Citations

0
Biochar derived from feedstock with high lignin content leads to better soil improvement performance in red soils: from the perspective of soil microbial regulation and carbon stabilization DOI

Bowei Lv,

Bing Ma, Yu-Long Li

et al.

Environmental Geochemistry and Health, Journal Year: 2025, Volume and Issue: 47(6)

Published: May 9, 2025

Language: Английский

Citations

0
Effects of Stocking Density of Filter-Feeding Fishes on Water Quality and Bacterial Community in Rice–Crayfish Polyculture System DOI Open Access
Yuanyuan Zhang,

Liangjie Zhao,

Jiaoyang Duan

et al.

Water, Journal Year: 2024, Volume and Issue: 16(16), P. 2296 - 2296

Published: Aug. 14, 2024

To evaluate the effects of filter-feeding fishes on water quality and bacterial community in rice–crayfish coculture system, four different stocking densities bighead carp (0, 500, 1000, 1500 ind./200 m2) were set up systems. Water samples systems collected biweekly to detect dissolved oxygen (DO), temperature (T), potential Hydrogen (pH), ammonia nitrogen (NH4+-N), nitrite (NO2−-N), nitrate (NO3−-N), total (TN), phosphorus (TP), Chlorophyll-a (Chl-a); was analyzed simultaneously, then correlation between microorganisms studied. The results showed that concentrations TN, TP, NO2−-N, NH4+-N decreased while DO NO3−-N increased along with breeding process. NO3−-N, important environmental factors affecting structure (p < 0.05). Bighead had an impact diversity, richness, evenness communities dominant bacteria density groups Proteobacteria, Actinomycetes, Bacteroidetes, Cyanobacteria. abundance Bacteroidea but reduced Cyanobacteria, Proteobacteria. introduction promoted conversion phosphorus, reducing risk cyanobacterial blooms. Group 1000 m2 exhibited best effect removal from body.

Language: Английский

Citations

2