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The effect of artificial light on bat richness and nocturnal soundscapes along an urbanization gradient in an arid landscape of central Peru
Urban Ecosystems ( IF 2.9 ) Pub Date : 2021-10-13 , DOI: 10.1007/s11252-021-01163-x
José Luis Mena 1 , Emilio Bonifaz 1 , Jorge Rivero 2 , Pamela Pastor 3 , Jaime Pacheco 4, 5 , T. Mitchell Aide 6
Affiliation  

Urbanization usually reduces bat richness; however, the presence of green areas within cities and peripheral rural areas in arid ecosystems may provide microhabitats for some species. Light pollution is a major feature of urbanization, but its impact on bat behavior appears to be species-specific and previous studies have documented contrasting responses. Moreover, the effect of urbanization on bat species has been poorly studied in arid regions. We assessed the effect of artificial night light intensity (as a proxy of urbanization) on both bat occupancy and the acoustic space used (ASU) in an urbanization gradient in Peruvian central coast, based on passive acoustic recorders. We collected 26,169 recordings from 19 sites which resulted in 579 independent detections of 15 bat species. Variation in both ASU and species richness was best explained by artificial night light intensity. Species-specific effects of the artificial night light intensity based on a multi-species occupancy modeling showed that this covariate had a negative effect on occupancy for most of the bat species (12 species). ASU and both observed and posterior bat species richness were positively correlated, suggesting that ASU can be used as a proxy of bat richness. This study provides evidence that both bat richness and occupancy decrease with artificial light intensity; nevertheless, eight species used urban areas, similar to results found in other cities around the world.



中文翻译:

人造光对秘鲁中部干旱景观沿城市化梯度的蝙蝠丰富度和夜间声景的影响

城市化通常会减少蝙蝠的数量;然而,干旱生态系统中城市和外围农村地区的绿地可能为某些物种提供微型栖息地。光污染是城市化的一个主要特征,但它对蝙蝠行为的影响似乎是特定于物种的,之前的研究记录了不同的反应。此外,在干旱地区,城市化对蝙蝠物种的影响研究甚少。我们评估了人工夜光强度(作为城市化的代表)对秘鲁中部海岸城市化梯度中蝙蝠占用率和使用的声学空间 (ASU) 的影响,基于无源录音机。我们从 19 个地点收集了 26,169 条记录,对 15 种蝙蝠物种进行了 579 次独立检测。人工夜光强度可以最好地解释 ASU 和物种丰富度的变化。基于多物种占用模型的人工夜光强度的物种特异性影响表明,该协变量对大多数蝙蝠物种(12 种)的占用率具有负面影响。ASU 与观察到的和后部蝙蝠物种丰富度呈正相关,表明 ASU 可用作蝙蝠丰富度的代表。这项研究提供的证据表明,蝙蝠的丰富度和占用率都随着人造光强度的增加而降低;尽管如此,有 8 个物种使用了城市地区,这与在世界其他城市发现的结果相似。基于多物种占用模型的人工夜光强度的物种特异性影响表明,该协变量对大多数蝙蝠物种(12 种)的占用率具有负面影响。ASU 与观察到的和后部蝙蝠物种丰富度呈正相关,表明 ASU 可用作蝙蝠丰富度的代表。这项研究提供的证据表明,蝙蝠的丰富度和占用率都随着人造光强度的增加而降低;尽管如此,有 8 个物种使用了城市地区,这与在世界其他城市发现的结果相似。基于多物种占用模型的人工夜光强度的物种特异性影响表明,该协变量对大多数蝙蝠物种(12 种)的占用率具有负面影响。ASU 与观察到的和后部蝙蝠物种丰富度呈正相关,表明 ASU 可用作蝙蝠丰富度的代表。这项研究提供的证据表明,蝙蝠的丰富度和占用率都随着人造光强度的增加而降低;尽管如此,有 8 个物种使用了城市地区,这与在世界其他城市发现的结果相似。这项研究提供的证据表明,蝙蝠的丰富度和占用率都随着人造光强度的增加而降低;尽管如此,有 8 个物种使用了城市地区,这与在世界其他城市发现的结果相似。这项研究提供的证据表明,蝙蝠的丰富度和占用率都随着人造光强度的增加而降低;尽管如此,有 8 个物种使用了城市地区,这与在世界其他城市发现的结果相似。

更新日期:2021-10-14
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