Scholarlink

<p>We studied the evolution of the dusk emerging insect, <i>Ephoron virgo</i>, in a section of the Ebro River (Spain), to estimate the impact of artificial light at night (ALAN) on its population. We analyzed the spatiotemporal patterns of benthic larval densities of <i>E. virgo</i> in 85&#xa0;km of the river and estimated the number of adults attracted annually during emergence to a bridge with street illumination considered to induce light pollution. <i>E. virgo</i> benthic larvae density decreased with time and proximity to the bridge despite improved water quality. Emergence magnitude at the Tudela Bridge was also declining. We calculated through very conservative estimations that the streetlamps system in the bridge could retain the entire population of this species from up to 20&#xa0;km of the river benthos. Our findings suggest that ALAN is a potential driver in the reduction of the <i>E. virgo</i> population and could affect its viability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Artificial light at night as a possible driver of E. virgo (Ephemeroptera) decline in a section of the Ebro River

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月13日

查看全文
  • Julene González,
  • Maite Arroita,
  • Aitor Larrañaga,
  • Mikel Lizaso,
  • Miguel Ángel Navarro,
  • Eduardo Navascués,
  • Manu Rubio,
  • Arturo Elosegi

摘要

We studied the evolution of the dusk emerging insect, Ephoron virgo, in a section of the Ebro River (Spain), to estimate the impact of artificial light at night (ALAN) on its population. We analyzed the spatiotemporal patterns of benthic larval densities of E. virgo in 85 km of the river and estimated the number of adults attracted annually during emergence to a bridge with street illumination considered to induce light pollution. E. virgo benthic larvae density decreased with time and proximity to the bridge despite improved water quality. Emergence magnitude at the Tudela Bridge was also declining. We calculated through very conservative estimations that the streetlamps system in the bridge could retain the entire population of this species from up to 20 km of the river benthos. Our findings suggest that ALAN is a potential driver in the reduction of the E. virgo population and could affect its viability.