Artificial wave breakers promote the establishment of alien aquatic plants in a shallow lake
Artificial wave breakers promote the establishment of alien aquatic plants in a shallow lake
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人工波浪破碎机促进外来水生植物在浅湖中的建立
DOI：
10.1007/s10530-019-01915-z
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发表时间：
2019
影响因子：
2.9
通讯作者：
Nishihiro J.
中科院分区：
文献类型：
--
作者：
Kim JY;Yano T;Nakanishi R;Tagami H;Nishihiro J.
2013 - 2017年，我们调查了三种外来水生植物——裸子花（Gymnocoronis spilanthoides）、花楸花（Alternanthera sessilis）和花楸花（Alternanthera philoxeroides）在Kasumigaura湖的发生情况。为了确定岸线改造对外来水生植物扩展的影响，我们比较了在岸线硬化和波浪破碎改变的不同岸线条件下，外来水生植物的相对发生率。在研究期间，外来水生物种在霞浦湖的分布持续增加，但不同年份的扩张速度有所不同。64.6%的植被碎片分布在离最近的斑块2公里范围内。平行于岸线设置人工破浪器，对外来水生植物斑块的建立有积极影响。特别是并联破波器增加了g的补片建立。与自然环境相比，其含量约为2.27倍。垂直的破波器使外星斑块的建立增加了约1.63倍。对于湖岸管理来说，同时考虑外来植物的抑制和堤防的保护是很重要的。建议采取措施，防止泵站周围外来水生物种的扩张，否则会导致入侵物种的迁移和扩张。
We surveyed the occurrence of three emergent alien aquatic plants,Gymnocoronis spilanthoides,Alternanthera sessilis, andAlternanthera philoxeroides, in Lake Kasumigaura from 2013 to 2017. To determine the effects of shoreline modification on the expansion of alien aquatic plants, we compared the relative occurrence of alien aquatic plants in varying shoreline conditions modified by shoreline hardening and wave breakers. The distribution of alien aquatic species increased continually in Lake Kasumigaura over the study period, although the rate of expansion differed among years. Furthermore > 64.6% of the vegetative fragments were found within 2 km of the nearest patch. The construction of artificial wave breakers, which were installed parallel to the shoreline, had a positive influence on alien aquatic plant patch establishment. Especially, parallel wave breakers increased the patch establishment ofG. spilanthoidesby about 2.27-fold compared to the natural environment. Perpendicular wave breakers increased alien patch establishment by about 1.63-fold. For lakeshore management, it is important to consider both alien plant suppression and levee protection. We further suggest prompt action to prevent the expansion of alien aquatic species around pumping stations, which can also result in the relocation and expansion of invasive species.
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