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首页> 外文期刊>Ecological research >Short-term Variations In Abundances And Potential Activities Of Viruses, Bacteria And Nanoprotists In Lake Bourget
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Short-term Variations In Abundances And Potential Activities Of Viruses, Bacteria And Nanoprotists In Lake Bourget

机译：布尔热湖中病毒，细菌和纳米生物的丰度和潜在活动的短期变化

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摘要

Samples were collected at four depths every 6 h over a 42-h period during two contrasting seasons (June vs. December) from Lake Bourget, France, for evidence of circadian fluctuations in the concentrations and potential activities of viruses, prokaryotes and protists in relation to environmental conditions: temperature, chlorophyll a and dissolved organic carbon (DOC) concentrations. Considerable vertical and temporal fluctuations were observed for all variables. Circadian variations were noted for DOC and chlorophyll a concentrations. Despite the external abiotic forcing (light, water movements), the fluctuations of microbial variables (including viruses) in most cases were apparently linked to biotic factors and interactions. Standing stocks and activities, as well as the number and levels of correlations among the microbial components, were, surprisingly, higher in winter than in summer. We speculate that this was because trophic interactions prevailed over the seasonal forcing (i.e. temperature) in shaping the observed differences.
机译：在两个对比季节（6月至12月），从法国布尔热湖在42小时内，每6小时从四个深度采集样品，以证明昼夜节律的变化，表明病毒，原核生物和原生生物之间的浓度和潜在活动有关适应环境条件：温度，叶绿素a和溶解的有机碳（DOC）浓度。对于所有变量，观察到相当大的垂直和时间波动。注意到DOC和叶绿素a浓度的昼夜节律变化。尽管存在外部非生物强迫（光，水运动），但在大多数情况下，微生物变量（包括病毒）的波动显然与生物因子及其相互作用有关。令人惊讶的是，冬季的常备种群和活动以及微生物成分之间的相关性数量和水平比夏季高。我们推测这是因为在塑造观察到的差异时，营养相互作用在季节性强迫（即温度）上盛行。

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