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<p>Invasive plant species pose major challenges to riparian wetland management. We conducted a pilot-scale field experiment over a single growing season to assess how non-selective mowing and subsequent sowing affected two noxious vines, <i>Sicyos angulatus</i> and <i>Humulus scandens</i>, in an urban riparian wetland in the Republic of Korea. Mowing paradoxically increased invasion by <i>S</i>. <i>angulatus</i> but decreased invasion by <i>H</i>. <i>scandens</i>, while sowing after mowing had no additional effect. This differential response indicates that non-selective mowing can shift invasion pressure rather than reduce it, emphasizing the need for species-specific, phenology-based mechanical management rather than uniform disturbance regimes. Mowing temporarily increased species richness and diversity, but the effect diminished over time, and community composition shifted toward species with heavier seeds and lower specific leaf area. Our results highlight that non-selective mowing for invasive species management should be applied with caution, as it can produce species-specific and even contradictory effects.</p>

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Controlling noxious weeds in urban riparian wetlands: non-selective mowing increases Sicyos angulatus invasion while controlling Humulus scandens

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月27日

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  • Minwoo Oh,
  • Chaeho Byun,
  • Minki Hong,
  • Yoonjeong Heo,
  • Jaesang Chung,
  • Hojeong Kang,
  • Eun Ju Lee

摘要

Invasive plant species pose major challenges to riparian wetland management. We conducted a pilot-scale field experiment over a single growing season to assess how non-selective mowing and subsequent sowing affected two noxious vines, Sicyos angulatus and Humulus scandens, in an urban riparian wetland in the Republic of Korea. Mowing paradoxically increased invasion by S. angulatus but decreased invasion by H. scandens, while sowing after mowing had no additional effect. This differential response indicates that non-selective mowing can shift invasion pressure rather than reduce it, emphasizing the need for species-specific, phenology-based mechanical management rather than uniform disturbance regimes. Mowing temporarily increased species richness and diversity, but the effect diminished over time, and community composition shifted toward species with heavier seeds and lower specific leaf area. Our results highlight that non-selective mowing for invasive species management should be applied with caution, as it can produce species-specific and even contradictory effects.