• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Limnologica >Recent changes in the spring microplankton of Lake Baikal, Russia
【24h】

Recent changes in the spring microplankton of Lake Baikal, Russia

机译：俄罗斯湖吉凯湖春微代的最新变化

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

Lake Baikal is facing several environmental stressors, including climate change and nearshore eutrophication. To assess recent ecological changes in Lake Baikal and provide a baseline for future comparisons, we sampled spring plankton communities from the pelagic zone of the lake in 2016 and compared these data with unpublished and published historical information going back to 1990. In 2016, one pelagic long-term monitoring station was sampled in early spring (March) during ice cover and 21 long-term monitoring stations located throughout the lake were sampled in late spring (May-June). We measured water chemistry parameters at most stations and the abundance, taxonomic composition and biomass of bacteria, ciliates and phytoplankton at several locations in different areas of the lake. Biotic parameters from 2016 were compared with historical data, showing significant changes in the spring pelagic microbial community since the 1990s. We show increased quantities of small species, mixotrophic ciliates, and the appearance (or increasing number) of small coloured and colourless flagellates. We also show substantially decreased densities of formerly dominant heavily silicified diatoms such as Aulacoseira spp. Since 2007, Synedra acus subsp. radians, a smaller and weakly silicified diatom, has dominated the spring plankton of the lake. These results suggest that Lake Baikal's pelagic plankton community may be changing, with climate likely playing a dominant role in these changes.
机译：贝加尔湖面临着几种环境压力源，包括气候变化和近岸富营养化。为了评估贝加尔湖的最新生态变化，并为未来的比较提供基线，我们在2016年从湖泊的普拉克顿社区采样，并将这些数据与未发表的和公布的历史信息相比，返回1990年。2016年，一只古典在冰盖期间在春季（3月）在春季（3月）中的长期监测站进行了取样，位于整个湖泊的21站，在春季深春（5月至6月）中被取样。我们在湖泊不同地区的几个地区测量了大多数站点的水化学参数和细菌，纤毛素和浮游植物的丰富，分类和植物的生物量。自2016年从2016年的生物参数与历史数据进行比较，从20世纪90年代以来，春季骨质微生物界的显着变化。我们显示出少量的小物种，混纺纤毛和外观（或越来越多）的小色和无色鞭毛的外观。我们还显示出以前占主导地位的重大硅化硅藻的密度显着降低，例如Aulacoseira SPP。自2007年以来，Synedra Acus Subsp。弧度，一个较小而弱的硅藻，占据了湖的春浮球。这些结果表明，贝加尔湖的Pelagic Plankton社区可能正在发生变化，气候可能在这些变化中发挥着主导作用。

著录项

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