...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanology >The Inhabitants of the Spring Ice, Under-ice Water, and Sediments of the White Sea in the Estuarine Zone of the Severnaya Dvina River
【24h】

The Inhabitants of the Spring Ice, Under-ice Water, and Sediments of the White Sea in the Estuarine Zone of the Severnaya Dvina River

机译：Severnaya Dvina河河口地区的春季冰，冰水和白海沉积物的居民

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

The data on the supra-ice snow, ice, under-ice water, and benthic algal flora obtained in 2007- 2008 by sampling in the estuary of the Severnaya Dvina River are analyzed. The river ice and under-ice water in the estuarine zone and in the channel part of the Severnaya Dvina differed greatly in the algal flora's composition. The fresh water species never exceeded 8.6%, while the ice algae composed 90-96% of the total ice inhabitants' biomass. In the under-ice water, this value did not exceed 58-64%. The bacteria in the ice composed not more than 2.5-10% of the total biomass, while, in the under-ice water, 36-49%. The shares of ciliates (0.04%) and nematodes (0.005-1.6%) in the total biomass were negligible. In the estuarine zone, the ice was inhabited mainly by nematodes (78% of the total biomass), while, in the river, their share decreased to 9%. The contribution of bacteria was 15% in Dvina Bay and increased to 61% in the river. The importance of algae in the snow was minor: 7% of the total biomass in the marine zone and 30% in the river region. High species diversity of the algal flora in the sandy and sandy-silty littoral grounds was revealed. The values of the total biomass of the bottom algal flora (0.38 g C/m~2) were only two to three times lower than the values revealed in similar habitats in the summer. The epipelithic forms (0.15 g C/m~2) dominated, being represented by 46 species of algae (49%). The shares of epipsammonic (0.12 g C/m~2) and planktonic (0.11 g C/m~2) species were almost equal to each other: 25 and 22 species, respectively (27 and 24%).
机译：分析了2007-2008年在Severnaya Dvina河口取样获得的冰上雪，冰，冰下水和底栖藻类植物的数据。河口区和Severnaya Dvina河道部分的河冰和冰水在藻类菌群的组成上差异很大。淡水物种从未超过8.6％，而冰藻占冰居民生物量的90-96％。在冰下水中，该值不超过58-64％。冰中细菌占生物质总量的比例不超过2.5-10％，而冰下水中的细菌占生物量的36-49％。纤毛虫（0.04％）和线虫（0.005-1.6％）在总生物量中的份额可忽略不计。在河口区，冰主要被线虫所占据（占总生物量的78％），而在河中，其所占比例下降到9％。细菌在德维纳湾的贡献为15％，在河中增加至61％。藻类在雪中的重要性微不足道：海洋区域总生物量的7％，河流区域总生物量的30％。揭示了沙质和粉质粉质沿海地带藻类植物的高物种多样性。底部藻类植物总生物量（0.38 g C / m〜2）的值仅比夏季类似生境中显示的值低两到三倍。上石器型（0.15 g C / m〜2）占优势，以46种藻类（49％）为代表。癫痫类（0.12 g C / m〜2）和浮游类（0.11 g C / m〜2）的份额几乎彼此相等：分别为25和22种（27％和24％）。

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