de Oliveira Rogério Ferreira, de Araujo Lira André Felipe, Zaffaroni-Caorsi Valentina, Feitosa Matheus Leonydas Borba, de Moura Geraldo Jorge Barbosa
Programa de Pós-graduação em Ecologia, Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, Brazil.
Laboratório de Estudos Herpetológicos e Paleoherpetológicos, Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, Brazil.
PLoS One. 2025 Mar 19;20(3):e0318517. doi: 10.1371/journal.pone.0318517. eCollection 2025.
Acoustic signals play a fundamental role in the lives of anurans. With the increasing prevalence of wind farms in Caatinga ecosystems, our goal was to assess whether the noise generated by this energy source poses a threat to anuran communication. We analyzed acoustic parameters of the advertisement calls from 181 adult males, of the species Scinax pachycrus, Scinax x-signatus, and Physalaemus cicada. Call activity was recorded across noise gradients in 19 temporary ponds with similar vegetation structures, distributed in two wind farms. Our results revealed a significant relationship between wind turbine noise and changes in acoustic parameters of the three species, distinctly influencing their spectral and temporal parameters of the advertisement calls. Dominant frequency, frequency range of Scinax pachycrus were affected by the noise, decreasing in noisier temporary ponds, while Scinax x-signatus decreased call amplitude and call pulses. On the other hand, Physalaemus cicada showed changes only in temporal variables, with reductions in call duration and call pulses, and an increase in call rate to cope whit noise in temporary ponds. Therefore, noise pollution becomes particularly concerning for the anurans of the Caatinga, as the areas of greatest interest for wind power generation overlap with priority areas for biodiversity conservation.
声学信号在无尾两栖类动物的生活中起着至关重要的作用。随着卡廷加生态系统中风电场的日益普及，我们的目标是评估这种能源产生的噪音是否对无尾两栖类动物的交流构成威胁。我们分析了181只成年雄性无尾两栖类动物（即粗疣琴蛙、叉斑琴蛙和蝉角蟾）求偶鸣叫的声学参数。在分布于两个风电场的19个具有相似植被结构的临时池塘中，沿着噪音梯度记录了鸣叫活动。我们的研究结果显示，风力涡轮机噪音与这三个物种声学参数的变化之间存在显著关系，明显影响了它们求偶鸣叫的频谱和时间参数。粗疣琴蛙的主频和频率范围受到噪音影响，在噪音较大的临时池塘中降低，而叉斑琴蛙的鸣叫幅度和鸣叫脉冲减少。另一方面，蝉角蟾仅在时间变量上出现变化，鸣叫持续时间和鸣叫脉冲减少，鸣叫速率增加，以应对临时池塘中的噪音。因此，噪音污染对卡廷加的无尾两栖类动物来说尤其令人担忧，因为风力发电最感兴趣的区域与生物多样性保护的优先区域重叠。
