Doyle Katherine E, Ning Nathan, Silva Luiz G M, Brambilla Eduardo M, Deng Z Daniel, Fu Tao, Boys Craig, Robinson Wayne, du Preez Jan A, Baumgartner Lee J
Institute for Land, Water and Society, Charles Sturt University, Elizabeth Mitchell Drive, Thurgoona New South Wales 2640, Australia.
Departamento de Zoologia, Instituto de Biociências, UNESP-Universidade Estadual Paulista, Caixa Postal 510, 18618-970 Botucatu, São Paulo, Brazil.
Conserv Physiol. 2022 Apr 20;10(1):coac017. doi: 10.1093/conphys/coac017. eCollection 2022.
The global prevalence of pumped-storage hydropower (PSH) is expected to grow exponentially as countries transition to renewable energy sources. Compared to conventional hydropower, little is currently known regarding PSH impacts on aquatic biota. This study estimated the survival of five life stages (egg, two larval stages, juvenile and adult) of redfin (European) perch () following passage through a PSH facility during the pumping phase. This was achieved by simulating the individual stressors expected to occur during passage through a 2000-MW PSH facility using laboratory-simulated (shear strain and extreme compression) and modelling (blade strike, BS) approaches. Our results indicate that redfin could survive the shear, pressure and BS stressors expected within the PSH facility, but impacts varied among life stages. Juvenile survival was >70% across all shear strain rates, while the survival of eggs and larvae declined markedly as strain rate increased. All life stages had high survival when exposed to rapid compression and BS. The high survival of redfin to the stressors tested suggests the PSH facility could facilitate the passage of redfin during the pumping phase from the lower to the higher elevation reservoir. This outcome would be welcomed in situations where the species is native, but could have adverse implications for the conservation of native biota where the species is considered a pest.
随着各国向可再生能源转型，全球抽水蓄能水电（PSH）的普及率预计将呈指数增长。与传统水电相比，目前关于PSH对水生生物群影响的了解甚少。本研究估计了红鳍（欧洲）鲈（）在抽水阶段通过PSH设施后五个生命阶段（卵、两个幼体阶段、幼鱼和成鱼）的存活率。这是通过使用实验室模拟（剪切应变和极端压缩）和建模（叶片撞击，BS）方法模拟通过2000兆瓦PSH设施期间预期出现的个体应激源来实现的。我们的结果表明，红鳍鲈能够在PSH设施内预期的剪切、压力和叶片撞击应激源下存活，但不同生命阶段的影响有所不同。在所有剪切应变率下，幼鱼的存活率均超过70%，而卵和幼体的存活率随着应变率的增加而显著下降。当暴露于快速压缩和叶片撞击时，所有生命阶段的存活率都很高。红鳍鲈对所测试应激源的高存活率表明，PSH设施在抽水阶段可以促进红鳍鲈从较低海拔水库向较高海拔水库的洄游。在该物种为本地物种的情况下，这一结果是值得欢迎的，但在该物种被视为有害生物的情况下，可能会对本地生物群的保护产生不利影响。
