Researches on non-native plants in Japan: Current state of understanding and forthcoming challenges

A survey of the aquatic plant flora in Lake Towada, a caldera lake located in the northern Tohoku region, was conducted in 2021. Twenty taxa of aquatic plants were confirmed; among them, a previously reported species was revised and re-identified and five species were newly recorded. Based on these updated flora data, the conservation importance of 65 lakes was evaluated following a method by Yamanouchi et al. (2016), using the number and rarity of extant species as indicators. The results showed that out of the 65 lakes, Lake Towada improved from the 19th to 12th and from 17th to 8th in terms of the number and rarity of extant species, respectively, indicating that the lake has higher conservation importance compared to what was previously reported. Elodea nuttallii, an invasive alien species, first documented in Lake Towada in 2014, had spread throughout the lake in 2021 and has grown vigorously at several sites.

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Development of Eradication Method for <i>Ludwigia grandiflora</i> in the Yodogawa River

SEGUCHI

TSURUYA

KAJI

et al. 2022

Ecology and Civil Engineering

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Researches on non-native plants in Japan: Current state of understanding and forthcoming challenges

Cited by 4 publications

References 59 publications

外来雑草の侵入経路と分布拡大に関する研究

外来雑草の侵入経路と分布拡大に関する研究

2021年の十和田湖の水生植物相および生物多様性保全における評価

Development of Eradication Method for <i>Ludwigia grandiflora</i> in the Yodogawa River

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