Metatranscriptomics analysis of cyanobacterial aggregates during cyanobacterial bloom period in Lake Taihu, China

2017 ◽  
Vol 25 (5) ◽  
pp. 4811-4825 ◽  
Author(s):  
Zhenzhu Chen ◽  
Junyi Zhang ◽  
Rui Li ◽  
Fei Tian ◽  
Yanting Shen ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Cyanobacterial Bloom ◽  
Bloom Period ◽  
Cyanobacterial Aggregates

Contributions of external nutrient loading and internal cycling to cyanobacterial bloom dynamics in Lake Taihu, China: Implications for nutrient management

2021 ◽  
Vol 66 (4) ◽  
pp. 1492-1509
Author(s):  
Hai Xu ◽  
Mark J. McCarthy ◽  
Hans W. Paerl ◽  
Justin D. Brookes ◽  
Guangwei Zhu ◽  
...  
Keyword(s):  
Nutrient Loading ◽  
Nutrient Management ◽  
Lake Taihu ◽  
Cyanobacterial Bloom ◽  
External Nutrient ◽  
Internal Cycling

scholarly journals Effects of Cyanobacteria on Phosphorus Cycling and Other Aquatic Organisms in Simulated Eutrophic Ecosystems

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2265
Author(s):  
Peng Gu ◽  
Qi Li ◽  
Hao Zhang ◽  
Xin Luo ◽  
Weizhen Zhang ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Lake Taihu ◽  
Cyanobacterial Bloom ◽  
Aquatic Organisms ◽  
Pilot Scale ◽  
Freshwater Ecosystems ◽  
Cyanobacterial Blooms ◽  
Eutrophic Lakes ◽  
P Concentration ◽  
Bloom Formation

Cyanobacterial blooms caused by eutrophication in Lake Taihu have led to ecological threats to freshwater ecosystems. A pilot scale experiment was implemented to investigate the relationship between cyanobacteria and other aquatic plants and animals in simulated eutrophic ecosystems under different phosphorus (P) regimes. The results of this study showed that cyanobacteria had two characteristics favorable for bloom formation in eutrophic ecosystems. One is the nutrient absorption. The presence of alkaline phosphatase was beneficial for algal cells in nutrition absorption under low P concentration. Cyanobacteria exhibited a stronger ability to absorb and store P compared to Vallisneria natans, which contributed to the fast growth of algal cells between 0.2 and 0.5 mg·L−1 of P (p < 0.05). However, P loads affected only the maximum biomass, but not the growth phases. The growth cycle of cyanobacteria remained unchanged and was not related to P concentration. P cycling indicated that 43.05–69.90% of the total P existed in the form of sediment, and P content of cyanobacteria showed the highest increase among the organisms. The other is the release of microcystin. Toxic microcystin-LR was released into the water, causing indirectly the growth inhibition of Carassius auratus and Bellamya quadrata and the reduction of microbial diversity. These findings are of importance in exploring the mechanism of cyanobacterial bloom formation and the nutrient management of eutrophic lakes.

scholarly journals Genome Sequence of the Proteorhodopsin-Containing Bacterium Flavobacterium sp. Strain TH167, Isolated from Cyanobacterial Aggregates in a Eutrophic Lake

2018 ◽  
Vol 6 (14) ◽  
Author(s):  
Haiyuan Cai ◽  
Feng Chen
Keyword(s):  
Genome Sequence ◽  
Genome Analysis ◽  
Lake Taihu ◽  
Eutrophic Lake ◽  
Content Type ◽  
Cyanobacterial Aggregates

ABSTRACT Flavobacterium is the most abundant group of bacteria within the cyanobacterial aggregates in Lake Taihu, China. Here, we present the genome sequence and annotation of Flavobacterium sp. strain TH167. Genome analysis revealed the presence of a proteorhodopsin-encoding sequence, together with its retinal-producing pathway, indicating a putative photoheterotrophic lifestyle that generates energy from light.

scholarly journals Cyanobacterial blooms and water quality in two urban fish ponds

1970 ◽  
Vol 27 ◽  
pp. 79-84 ◽  
Author(s):  
Sharmeen Rahman ◽  
Md Abu Sayed Jewel
Keyword(s):  
Microcystis Aeruginosa ◽  
Ammonia Oxidation ◽  
Cyanobacterial Bloom ◽  
Oxygen Demand ◽  
Environmental Parameters ◽  
Cyanobacterial Blooms ◽  
Fish Ponds ◽  
Bloom Period ◽  
Free Carbon Dioxide ◽  
Carbon Dioxide Co2

The occurrence and abundance of cyanobacterial population was monitored monthly in two urban fish ponds in Rajshahi City Corporation area from January to December, 2006. The bloom was observed in March, August and September. Some environmental parameters such as water temperature, transparency, pH, Dissolved Oxygen(DO), free Carbon dioxide(CO2), Biological Oxygen Demand (BOD), NO2-N, NH3-N, NH4+, toxic ammonia, Oxidation reduction Index (rH2) were recorded and their relationship with the bloom formation by cyanobacteria are discussed. During the study period 23 species of cyanobacteria were identified. Among which Microcystis, Anabaena, Planktothrix were found to be the dominant genera. Microcystis aeruginosa was the most dominant species during the bloom period. At the peak bloom period, Microcystis aeruginosa comprised 81.64% and 83.24% of total cyanophyceae in pond-1 and pond-2, respectively. The initiation and persistence of natural bloom of cyanobacteria, especially Microcystis was found to be triggered by relatively high temperature (33.21-33.53°C), alkaline pH (8.8), and nutrient enrichment especially high NO2-N, NH3-N, and NH4+ concentration. Key words: Cyanobacterial bloom, nutrient, fish pond    doi:10.3329/ujzru.v27i0.1960 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 79-84

Long-term nutrient trends and harmful cyanobacterial bloom potential in hypertrophic Lake Taihu, China

Hydrobiologia ◽  
2016 ◽  
Vol 787 (1) ◽  
pp. 229-242 ◽  
Author(s):  
Hai Xu ◽  
Hans W. Paerl ◽  
Guangwei Zhu ◽  
Boqiang Qin ◽  
Nathan S. Hall ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Cyanobacterial Bloom ◽  
Hypertrophic Lake
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