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<p>A study of the early life history stages of fishes (ELH) in the area of the Połaniec Power Plant (PPP), the second largest power plant with an open cooling system located on the Vistula River, was conducted. Using next-generation sequencing, 17 fish species were found in the drift, five of which are protected by international (Natura 2000) or national law. It was estimated that in the spring and summer of 2023 from 10 to 17 × 10<sup>6</sup> ind. ELH, including 22–23% of protected species, was probably entrained and killed in the cooling system of the PPP. The water temperature within the mixing zone was found to be noticeably elevated (by an average of 5.5°C). In addition, a pronounced hydropeaking phenomenon was observed after the ELH sampling period (since spring 2024). All these pressures overlapping can cause very unfavorable conditions for aquatic organisms in the Upper Vistula River.</p>

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Entrainment of fish larvae into Połaniec Power Plant: another considerable threat for the ichthyofauna of the Vistula River (Poland)

  • 期刊论文

  • 发表日期：

    2025年1月8日

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  • Michał Nowak,
  • Tomasz Mikołajczyk,
  • Katarzyna Janik-Superson,
  • Sergiusz Jeziorski,
  • Dawid Krawczyk,
  • Dariusz Skowronek,
  • Łukasz Mikołajczyk,
  • Robert Wawręty

摘要

A study of the early life history stages of fishes (ELH) in the area of the Połaniec Power Plant (PPP), the second largest power plant with an open cooling system located on the Vistula River, was conducted. Using next-generation sequencing, 17 fish species were found in the drift, five of which are protected by international (Natura 2000) or national law. It was estimated that in the spring and summer of 2023 from 10 to 17 × 106 ind. ELH, including 22–23% of protected species, was probably entrained and killed in the cooling system of the PPP. The water temperature within the mixing zone was found to be noticeably elevated (by an average of 5.5°C). In addition, a pronounced hydropeaking phenomenon was observed after the ELH sampling period (since spring 2024). All these pressures overlapping can cause very unfavorable conditions for aquatic organisms in the Upper Vistula River.