...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Invasive Ponto-Caspian hydrozoan Cordylophora caspia (hydrozoa: Cnidaria) in southern Baltic coastal lakes
【24h】

Invasive Ponto-Caspian hydrozoan Cordylophora caspia (hydrozoa: Cnidaria) in southern Baltic coastal lakes

机译：波罗的海南部沿海湖泊中的侵入性蓬-里海水生动物Cordylophora caspia（水生动物：Cnidaria）

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

Cordylophora caspia Pall. is a highly invasive Ponto-Caspian colonial hydroid with a worldwide distribution. It is a biofouling organism colonizing industrial water installations and causing serious economic problems. Here, we give the first report of its occurrence in southern Baltic coastal lakes, and analyze its distribution in relation to environmental factors and likely colonization routes. Samples were collected from the stalks of Phragmites australis at the total of 102 sites in 15 lakes and lagoons. The species was most numerous in lagoons, i.e. beta-oligohaline water bodies with a surface hydrological connection with the sea, where it reached mean densities of 1200-4800 hydranths m(-2). In regression tree analysis, chloride concentration, followed by pH, were the strongest explanatory variables for its occurrence, with highest densities observed at chloride concentration above 1.18 g Cl L-1 and pH 8.05-9.26. At pH 5.77 -8.04 higher densities were observed at temperatures above 20.3 degrees C. Generally, within the range of parameters observed in our study, high densities of C caspia were associated with high chloride concentration, pH, temperature and electrical conductivity values. The species was also present in freshwater lakes; these colonies may have the highest capacity for future invasions of such habitats. Within lakes, high densities were observed at canals connecting these water bodies with the sea, and at sites close to the inflow of rivers. This distribution pattern can facilitate its further spread into inland waters. (C) 2015 Elsevier Ltd. All rights reserved.
机译：Cordylophora caspia Pall。是高度侵入性的蓬图里海殖民地的积水体，分布在世界各地。它是一种生物污垢生物，遍布工业用水设施并造成严重的经济问题。在这里，我们给出了其在波罗的海南部沿海湖泊中发生的第一份报告，并分析了其与环境因素和可能的定殖路线的关系。在15个湖泊和泻湖的102个地点中，从芦苇的茎中收集了样本。该物种在泻湖中数量最多，即与海洋表层水文联系的β-低盐咸水体，其平均密度为1200-4800 m m（-2）。在回归树分析中，氯化物浓度及其后的pH是其发生的最强解释变量，在氯化物浓度高于1.18 g Cl L-1和pH 8.05-9.26时观察到最高的密度。在pH值5.77 -8.04时，在高于20.3摄氏度的温度下观察到更高的密度。通常，在我们研究中观察到的参数范围内，高密度的Caspia与高氯化物浓度，pH，温度和电导率值相关。该物种也存在于淡水湖泊中。这些殖民地可能具有未来入侵这类栖息地的最大能力。在湖泊中，在将这些水体与海洋连接的运河以及靠近河流入水口的地方观察到高密度。这种分布方式可以促进其进一步扩散到内陆水域。 （C）2015 Elsevier Ltd.保留所有权利。

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