首页> 外文期刊>International journal of ecohydrology and hydrobiology >Appearance of toxigenic cyanobacteria in two Polish lakesdominated by Microcystis aeruginosa and Planktothrixagardhii and environmental factors influence.
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Appearance of toxigenic cyanobacteria in two Polish lakesdominated by Microcystis aeruginosa and Planktothrixagardhii and environmental factors influence.

机译:波兰铜绿微囊藻和浮游藻类占主导地位的两个波兰湖泊中产毒蓝细菌的出现和环境因素的影响。

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摘要

The aim of this study was to analyze and compare the relationship between environmental factors (temperature; pH; total phosphorus — TP and nitrogen — TN and their ratio) and occurrence of microcystin producing cyanobacteria in two shallow, eutrophic Polish water bodies, Sulejow Reservoir (Central Poland) and Bninskie Lake (Western Poland). Samples for analyses were collected from June till October 2005. Cyanobacteria Microcystis aeruginosa and Planktothrix agardhii, responsible for microcystins production, were detected respectively for Sulejow Reservoir and Bninskie Lake. Molecular analysis of the mcyE gene, indicated the presence of toxigenic strains of cyanobacteria in both water bodies throughout the whole sampling period. The highest extracellular microcystins toxicity established by PPIA was 2.83 μg dm~(-3) and 2.19 μg dm~(-3) in samples dominated by M aeruginosa and P agardhii respectively. Two different environmental factors in studied water bodies were crucial in occurrence of hepatotoxic cyanobacteria. The strong correlation between biomass of M aeruginosa and total nitrogen (TN) in Sulejow Reservoir (R=0.83; p<0.05) was observed. Strong negative correlation was found between biomass of P. agardhii and temperature (R=-0.77; p<0.05 and R=-0.70; p<0.05) in Bninskie Lake.
机译:这项研究的目的是分析和比较环境因素(温度,pH,总磷-TP和氮-TN及其比例)与两个浅水富营养化波兰水域Sulejow水库中产生微囊藻毒素的蓝细菌之间的关系(波兰中部)和Bninskie湖(波兰西部)。从2005年6月至2005年10月收集分析样品。分别在苏莱乔水库和Bninskie湖中检测到造成微囊藻毒素生产的铜绿微囊藻和浮游藻。对mcyE基因的分子分析表明,在整个采样期间,两个水体中均存在蓝细菌的产毒菌株。 PPIA建立的最高的细胞外微囊藻毒素毒性在铜绿假单胞菌和琼脂假单胞菌占主导的样品中分别为2.83μgdm〜(-3)和2.19μgdm〜(-3)。在研究的水体中,两种不同的环境因素对肝毒性蓝细菌的发生至关重要。观察到苏莱珠水库中铜绿假单胞菌的生物量与总氮(R = 0.83; p <0.05)密切相关。在Bninskie湖中,紫生青冈生物量与温度之间存在强烈的负相关性(R = -0.77; p <0.05和R = -0.70; p <0.05)。

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