scholarly journals Characteristic of phosphorus release with the control of pH of sediments from Meiliang Bay, Lake Taihu

2009 ◽  
Vol 21 (5) ◽  
pp. 663-668 ◽  
Author(s):  
YUAN Hezhong ◽  
◽  
SHEN Ji ◽  
LIU Enfeng ◽  
MENG Xianghua ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Phosphorus Release ◽  
Meiliang Bay

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

The regularity of wind-induced sediment resuspension in Meiliang Bay of Lake Taihu

2014 ◽  
Vol 70 (1) ◽  
pp. 167-174 ◽  
Author(s):  
Jianjian Wang ◽  
Yong Pang ◽  
Yiping Li ◽  
Yawen Huang ◽  
Junjie Jia ◽  
...  
Keyword(s):  
Wind Speed ◽  
Release Rate ◽  
Lake Taihu ◽  
Sediment Resuspension ◽  
Quantitative Relationship ◽  
Phosphorus Release ◽  
Hydrodynamic Conditions ◽  
Wind Speeds ◽  
Resuspension Rate ◽  
Meiliang Bay

Contaminants released by wind-induced sediment resuspension could influence the water quality in shallow lakes. This study aims to reveal the quantitative relationship between wind speed (v) and sediment resuspension rate (r) in Meiliang Bay of Lake Taihu. The study was conducted in three steps. First, the in situ wind speed and current velocity were measured over a period of 2 days in Meiliang Bay to establish the relationship between wind and hydrodynamic conditions; second, an indoor experiment was conducted in a cylindrical simulator with sediment from the study area to determine sediment resuspension rates under different hydrodynamic conditions; and third, linkages between sediment resuspension and wind were determined. The average sediment resuspension rate was highly correlated with the wind speed (R2 = 0.99), and was expressed by r = 20.72v2.034 at wind speeds in the range of 0–14 m/s. The critical wind speed for sediment resuspension is about 7 m/s. Under these conditions, the average resuspension rate could reach 1,000 g/(m2d), with a total phosphorus release rate of 1.1 g/(m2d) and a total nitrogen release rate of 18.1 g/(m2d).

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 The effects of red soil in removing phosphorus from water column and reducing phosphorus release from sediment in Lake Taihu

2014 ◽  
Vol 69 (5) ◽  
pp. 1052-1058 ◽  
Author(s):  
Lichun Dai ◽  
Gang Pan
Keyword(s):  
Water Column ◽  
Lake Taihu ◽  
Cost Effective ◽  
Phosphorus Release ◽  
Red Soil ◽  
Natural Soil ◽  
P Adsorption ◽  
P Release ◽  
The Cost ◽  
Short Time

A natural red soil and a lanthanum-modified soil (LMS) were tested to compare their phosphorus (P) adsorption capacities and their effectiveness in removing P from the water column and reducing P release from sediment. The equilibrium of P adsorption demonstrated that the maximum P adsorption for the soil was 1.29 and 2.22 mg g−1 at pH 8.5 and 5.5, respectively, and for the LMS these were increased by 45.6 and 77.6% at pH 8.5 and 5.5, respectively, indicating that the soil was effective in P adsorption and the doping of lanthanum could substantially increase P adsorption. The sediment–water column incubation showed that, due to the P adsorption of the soil and LMS, the total P in the water column decreased by 58.5, 60.6, 68.2 and 77.2% for 180 g m−2 soil, 900 g m−2 soil, 180 g m−2 LMS and 900 g m−2 LMS treated systems, respectively, in a short time (6 h), and the capping layer substantially reduced the P release from sediment during column incubation, indicating that the soils were effective in reducing internal P load. However, considering the cost of LMS, the natural soil was suggested to be a cost-effective material to control internal P load.

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.

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