Abstract

Elodea canadensis was found in July 2016 in the Ust-Tarksky district of Novosibirsk Region. In July 2016 and in July–August 2018, it was found in three bays of the Novosibirsk Reservoir: Ordynsky, Sharapsky, and Karakansky. In the Sharapsky Bay, elodea (Canadian waterweed) formed thickets of about 34 000 m² in area, which were characterized by high productivity with a maximum aboveground phytomass ranging from 417 to 1352 g/m² of absolute dry weight. The records appear to be the first confirmed data for Novosibirsk Region, because all earlier mentions are the result of an erroneous definition, or do not have any documentary evidence, or were cited from earlier publications. The reasons for the fact that E. canadensis has just begun its expansion on the territory of Novosibirsk Region with a significant area of 177 800 km², while in many regions of Siberia it manifests itself as an active invasive species, are discussed. It was concluded that the leading factors limiting the distribution of E. canadensis in Novosibirsk Region include the composition and degree of mineralization of natural waters and a high representation of the local species Hydrilla verticillata in the water bodies, which are potentially suitable for the growth of elodea.

中文翻译：

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Elodea canadensis Michx。记录在新西伯利亚州（俄罗斯）

摘要

加拿大的Elodea canadensis于2016年7月在新西伯利亚州的Ust-Tarksky区被发现。2016年7月和2018年7月至2018年8月，在新西伯利亚水库的三个海湾中发现了它：奥丁斯基，沙拉夫斯基和卡拉坎斯基。在莎拉波斯基湾，伊乐藻（加拿大水草）形成了约34000 m ^2的灌丛，其特点是高生产力，最大地上植物的绝对干重范围为417至1352 g / m ²。该记录似乎是新西伯利亚州的第一个确认数据，因为所有先前提到的内容都是错误定义的结果，或者没有任何文献证据，或者是先前出版物中引用的内容。加拿大大肠埃希菌的事实的原因刚刚开始在新西伯利亚地区扩张，面积达177 800 km ²，而在西伯利亚的许多地区，它都表现为活跃的入侵物种。结论是限制新西伯利亚地区加拿大大肠埃希菌分布的主要因素包括天然水的矿化成分和程度，以及水体中极丰富的黑藻（Hydrilla verticillata）的代表性，这可能适合于淡水of的生长。 Elodea 。