Nutrient fluxes induced by disturbance in Meiliang Bay of Lake Taihu

2006 ◽  
Vol 49 (S1) ◽  
pp. 186-192 ◽  
Author(s):  
Liancong Luo ◽  
Boqiang Qin ◽  
Guangwei Zhu ◽  
Xiaojing Sun ◽  
Dalin Hong ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Nutrient Fluxes ◽  
Meiliang Bay

scholarly journals Effects of Dredging Season on Sediment Properties and Nutrient Fluxes across the Sediment–Water Interface in Meiliang Bay of Lake Taihu, China

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1606 ◽  
Author(s):  
Ji-Cheng Zhong ◽  
Ju-Hua Yu ◽  
Xiao-Lan Zheng ◽  
Shuai-Long Wen ◽  
De-Hong Liu ◽  
...  
Keyword(s):  
Taihu Lake ◽  
Lake Taihu ◽  
Soluble Reactive Phosphorus ◽  
Internal Loading ◽  
Sediment Oxygen Demand ◽  
Nutrient Fluxes ◽  
Water Interface ◽  
Sediment Properties ◽  
N Fluxes ◽  
Meiliang Bay

The influence of dredging season on sediment properties and nutrient fluxes across the sediment–water interface remains unknown. This study collected sediment cores from two sites with different pollution levels in Meiliang Bay, Taihu Lake (China). The samples were used in simulation experiments designed to elucidated the effects of dredging on internal loading in different seasons. The results showed that dredging the upper 30 cm of sediment could effectively reduce the contents of organic matter, total nitrogen, and total phosphorus in the sediments. Total biological activity in the dredged sediment was weaker (p < 0.05) than in the undredged sediment in all seasons for both the Inner Bay and Outer Bay, but the effect of 30-cm dredging on sediment oxygen demand was negligible. Dredging had a significant controlling effect on phosphorus release in both the Inner Bay and Outer Bay, and soluble reactive phosphorus (SRP) fluxes from the dredged cores were generally lower (p < 0.05) than from the undredged cores. In contrast, NH4+-N fluxes from the dredged cores were significantly higher (p < 0.05) than from the undredged cores in all seasons for both sites, this indicates short-term risk of NH4+-N release after dredging, and this risk is greatest in seasons with higher temperatures, especially for the Inner Bay. Dredging had a limited effect on NO2−-N and NO3−-N fluxes at both sites. These results suggest that dredging could be a useful approach for decreasing internal loading in Taihu Lake, and that the seasons with low temperature (non-growing season) are suitable for performing dredging projects.

Phosphorus release from cyanobacterial blooms in Meiliang Bay of Lake Taihu, China

2011 ◽  
Vol 37 (6) ◽  
pp. 842-849 ◽  
Author(s):  
Xiaoming Chuai ◽  
Wei Ding ◽  
Xiaofeng Chen ◽  
Xiaolin Wang ◽  
Aijun Miao ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Phosphorus Release ◽  
Cyanobacterial Blooms ◽  
Meiliang Bay

scholarly journals The Impact of Planktivorous Fishes on Microcystin Concentrations in Meiliang Bay, Lake Taihu, China

2006 ◽  
Vol 21 (4) ◽  
pp. 721-723 ◽  
Author(s):  
Hua Yang ◽  
Ping Xie ◽  
Zhixin Ke ◽  
Yaqin Liu ◽  
Shikai Wu ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Meiliang Bay ◽  
The Impact

Pyrosequencing analysis of free-living and attached bacterial communities in Meiliang Bay, Lake Taihu, a large eutrophic shallow lake in China

2015 ◽  
Vol 61 (1) ◽  
pp. 22-31 ◽  
Author(s):  
Xiangming Tang ◽  
Linlin Li ◽  
Keqiang Shao ◽  
Boweng Wang ◽  
Xianlei Cai ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Lake Taihu ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Eutrophic Lakes ◽  
Free Living ◽  
Bacterial Populations ◽  
Meiliang Bay ◽  
Taxonomic Groups ◽  
High Level

To elucidate the relationship between particle-attached (PA, ≥5.0 μm) and free-living (FL, 0.2–5.0 μm) bacterial communities, samplings were collected seasonally from November 2011 to August 2012 in Meiliang Bay, Lake Taihu, China. We used 454 pyrosequencing of 16S rRNA genes to study bacterial diversity and structure of PA and FL communities. The analysis rendered 37 985 highly qualified reads, subsequently assigned to 1755 operational taxonomic units (97% similarity) for the 8 samples. Although 27 high-level taxonomic groups were obtained, the 3 dominant phyla (Proteobacteria, Actinobacteria, and Bacteroidetes) comprised about 75.9% and 82.4% of the PA and FL fractions, respectively. Overall, we found no significant differences between community types, as indicated by ANOSIM R statistics (R = 0.063, P > 0.05) and the Parsimony test (P = 0.222). Dynamics of bacterial communities were correlated with changes in concentrations of total suspended solids (TSS) and total phosphorus (TP). In summer, a significant taxonomic overlap in the 2 size fractions was observed when Cyanobacteria, a major contributor of TSS and TP, dominated in the water, highlighting the potential rapid exchange between PA and FL bacterial populations in large shallow eutrophic lakes.

Toxicity evaluation of Meiliang Bay, Lake Taihu, China—a drinking water source

Hydrobiologia ◽  
2007 ◽  
Vol 581 (1) ◽  
pp. 297-303 ◽  
Author(s):  
Yuangao Chen ◽  
Haigang Chen ◽  
Yulin Wu ◽  
Zhaoli Li ◽  
Liwei Sun ◽  
...  
Keyword(s):  
Drinking Water ◽  
Lake Taihu ◽  
Water Source ◽  
Drinking Water Source ◽  
Toxicity Evaluation ◽  
Meiliang Bay
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