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首页> 外文期刊>Ecological indicators >Intra-annual variation and correlations of functional traits in Microcystis and Dolichospermum in Lake Chaohu
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Intra-annual variation and correlations of functional traits in Microcystis and Dolichospermum in Lake Chaohu

机译：巢湖微囊藻和扁藻的年内变化及其与功能性状的相关性。

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摘要

Microcystis and Dolichospermum are two major genera of bloom-forming cyanobacteria in Lake Chaohu. However, it is little known the way in which the two cyanobacteria adjust their own morphological and physiological characteristics to maintain their biomass. In the study, the phytoplankton community in Lake Chaohu was investigated monthly from June 2017 to May 2018, and the morphological and physiological characteristics of dominant species were also determined. The results showed that Microcystis aeruginosa and Dolichospermum flos-aquae were the two dominant cyanobacteria species in Lake Chaohu. The ranges of the cell diameter and colony size of M. aeruginosa were small throughout the whole year, but those of D. flos-aquae changed significantly over time and in different regions of the lake. There were significant negative relationship between cell diameter and colony size of D. flos-aquae, which indicated that D. flos-aquae was more dependent on morphological adjustment to adapt environmental changes than M. aeruginosa. The biomass of the two algae increased with increasing cell diameter and colony size, indicating that the two algae might maintain their biomass by regulating their morphology. The photosynthetic activity in the cyanobacteria peaked in summer, late winter and early spring. The consistency of the trends in the photochemical activity and biomass of the two algae indicated that the two algae can adapt to environmental changes by changing their photosynthetic characteristics. These findings will be helpful in improving our understanding of the population dynamics of M. aeruginosa and D. flos-aquae and their environmental adaptation mechanisms in Lake Chaohu.
机译：微囊藻和小孢子藻是巢湖中形成水华的蓝细菌的两个主要属。然而，鲜为人知的是两个蓝细菌如何调整其自身的形态和生理特性以维持其生物量。在这项研究中，从2017年6月至2018年5月每月对巢湖浮游植物群落进行调查，并确定优势种的形态和生理特征。结果表明，铜绿微囊藻和Dolichospermum flos-aqua是巢湖两个主要的蓝细菌。全年铜绿假单胞菌的细胞直径和菌落大小范围很小，但随着时间的流逝以及在湖泊的不同区域中，水藻的细胞直径和菌落大小都发生了显着变化。水藻的细胞直径与菌落大小之间存在显着的负相关关系，这表明水藻比铜绿假单胞菌更依赖形态调节来适应环境变化。两种藻类的生物量随细胞直径和菌落尺寸的增加而增加，表明两种藻类可能通过调节其形态来维持其生物量。蓝细菌的光合作用活性在夏季，冬季末和初春达到峰值。两种藻类的光化学活性和生物量趋势的一致性表明，两种藻类可以通过改变其光合特性来适应环境变化。这些发现将有助于我们更好地了解巢湖中铜绿假单胞菌和浮萍类鱼类的种群动态及其环境适应机制。

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  • 来源
    《Ecological indicators》 |2020年第4期|106052.1-106052.10|共10页
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    Chinese Acad Sci Nanjing Inst Geog & Limnol State Key Lab Lake Sci & Environm Nanjing 210008 Peoples R China|Changzhou Univ Sch Environm & Safety Engn Changzhou 213164 Jiangsu Peoples R China;

    Chinese Acad Sci Nanjing Inst Geog & Limnol State Key Lab Lake Sci & Environm Nanjing 210008 Peoples R China|Huaiyin Normal Univ Jiangsu Collaborat Innovat Ctr Reg Modern Agr & E Huaian 223001 Peoples R China;

    Chinese Acad Sci Nanjing Inst Geog & Limnol State Key Lab Lake Sci & Environm Nanjing 210008 Peoples R China;

    Changzhou Univ Sch Environm & Safety Engn Changzhou 213164 Jiangsu Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Microcystis aeruginosa; Dolichospermum flos-aquae; Cell diameter; Colony size;

    机译：铜绿微囊藻;淡水杜鹃泡孔直径菌落大小;

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