...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquatic Sciences >Dynamic transfer of soil bacteria and dissolved organic carbon into small streams during hydrological events
【24h】

Dynamic transfer of soil bacteria and dissolved organic carbon into small streams during hydrological events

机译：土壤细菌的动态转移并将有机碳溶解成水文事件的小型溪流

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Small headwater streams interlink catchment soils with the river network. As water makes its way from the hillslopes to the stream, it may transport dissolved organic carbon (DOC) and potentially soil microbes into stream water. In this study, we aimed at quantifying the dynamic transfer of DOC and microbial life, namely bacteria from catchment soils into streams. We hypothesized that increased soil saturation enhances the lateral inflow of bacteria and DOC into streams. To address this hypothesis, we sampled six first order streams and three soil transects at two different depths located within the pre-alpine Oberer Seebach (OSB) catchment in Austria over a duration of 2 years. We found a strong variation in DOC concentrations (range 0.4-5.6 mg L-1) and bacterial abundances (range 500,000-3,863,000 cells mL(-1)) measured by flow-cytometry. The highest values of DOC and bacterial cells occurred during high flow events. DOC concentration and bacterial abundance were correlated across all streams and seasons. In soils, DOC ranges were higher and were also correlated with bacterial abundance, while DOC concentrations were similar to 10 times higher per bacterial cell than in streams. Overall we show that soils provide a dynamic inflow of bacteria and DOC to first order streams. Most probably, this results in a dynamic and reoccurring inoculation of small streams from catchment soils during runoff events. We propose that this dynamic microbial inoculation of small streams is potentially relevant for microbial community dynamics of downstream receiving waters.
机译：小型下线用河网划线互连集水区。随着水从山坡到溪流的方式，它可以将溶解的有机碳（DOC）和潜在的土壤微生物传输到流水中。在这项研究中，我们旨在量化Doc和微生物寿命的动态转移，即来自集水土壤的细菌到流中。我们假设土壤饱和度增加增强了细菌和DOC的横向流入流。为了解决这一假设，我们在奥地利在2年的持续时间内取样了六个一阶流和三个土壤横断面，位于奥地利的奥地利前的Alpine Oberer Seebach（OSB）集水区内。我们发现通过流式细胞术测量的DOC浓度（范围0.4-5.6mg L-1）和细菌丰富（范围<500,000-3,863,000毫升（-1））。在高流动事件期间发生DOC和细菌细胞的最高值。 DOC浓度和细菌丰度在所有溪流和季节中都相关。在土壤中，DOC范围较高，并且也与细菌丰度相关，而DOC浓度类似于每种细菌细胞比流在流中的10倍。总的来说，我们表明土壤提供了一种动态的细菌流入和第一阶流。最重要的是，这导致径流事件期间从集水污染的动态和再灼热地接受小流。我们提出，这种动态微生物接种的小型溪流对下游接收水域的微生物群落动态有所相关。

著录项

  • 来源
    《Aquatic Sciences》 |2020年第2期|41.1-41.11|共11页
  • 作者

    Caillon Florian; Schelker Jakob;

  • 作者单位

    Univ Vienna Dept Limnol & Biooceanog Div Limnol A-1090 Vienna Austria|Biol Stn GmbH WasserCluster Lunz A-3293 Lunz Am See Austria;

    Univ Vienna Dept Limnol & Biooceanog Div Limnol A-1090 Vienna Austria|Biol Stn GmbH WasserCluster Lunz A-3293 Lunz Am See Austria;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Soil inoculation; Soil bacteria; Dissolved organic matter; Hydrological events;

    机译：土壤接种;土壤细菌;溶解有机物;水文事件;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号