Anthropogenic noise and habitat structure shaping dominant frequency of bird sounds along urban gradients

Hao, Zezhou; Zhang, Chengyun; Li, Le; Gao, Bingtao; Wu, Ruichen; Pei, Nancai; Liu, Yang

doi:10.1016/j.isci.2024.109056

Cited by 6 publications

(3 citation statements)

References 74 publications

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“…For instance, they are indicator species to signal quality of forest habitats [18]. They are also responsive to habitat structural changes that have serious consequences on the ecosystem stability [19,20]. For instance, they indicate the broad effects of urbanization on biodiversity [21].…”

Section: Introductionmentioning

confidence: 99%

“…The dynamics and consequences of these impacts vary across different scales. For instance in highly populated areas, noise pollution and change in vegetation structure seriously impacts bird populations [25,24,20]. Notably, it affects courtship rituals within bird populations with serious consequences on reproduction and population stability [24,21,20].…”

Section: Introductionmentioning

confidence: 99%

“…For instance in highly populated areas, noise pollution and change in vegetation structure seriously impacts bird populations [25,24,20]. Notably, it affects courtship rituals within bird populations with serious consequences on reproduction and population stability [24,21,20]. Meanwhile in areas of less human settlement, birds are majorly affected by changes in vegetation structure [26,27,28].…”

Section: Introductionmentioning

confidence: 99%

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Avifaunal assemblages within fresh and saltwater resources around a national park; the case of Lake Munyanyange, Lake Edward, and Kazinga Channel in Southwestern Uganda

Aggrey,

Akisiimire,

Nicholas

et al. 2024

Preprint

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Background Birds play a critical role in sustaining global ecosystems as well as human livelihoods. Despite this value, their populations are declining at unprecedented rates with anthropogenic factors being the main driver. Local monitoring strategies provides data for enhancing monitoring activities while designing conservation interventions. Herein, we present preliminary results from bird monitoring activities undertaken within fresh and salt water sites in Southwestern parts of Uganda. Methods Point count method was used during the survey. This included recording of birds seen and or heard from within 100 m radius. This was done periodically (every 10 minutes) in the morning and evening along a transect and birds were identified using identification keys. Diversity indices were computed for the data and One-Way ANOVA was used to compute the differences in counts across different sites. Post-Hoc analysis was computed using Tukey’s HSD test. All analyses were done in R software. Results A total of 7476 individuals of birds of 68 different species were recorded during the 558 observations made across the different sites. The freshwater lakes had the highest bird diversity and abundance with Kazinga Channel inside the park scoring the highest (H' = 2.211). Ceryle rudis (29%, n= 7476) had the highest number of individuals followed by Ploceus melanocephalus. The choice of the different sites by the birds did not vary across Lake Edward and Kazinga Channel (P =0.852). Meanwhile for these sites in comparison with Lake Munyanyange, there was a significant difference in being chosen by the birds i.e. P = 0.009 and P = 0.015 respectively. All these lakes had migratory birds that fly across national boundaries Conclusion There is a high diversity of birds around salt and fresh water sites in Southwestern Uganda. This includes migratory bird species. Conservation interventions thus ought to be designed targeting these selected sites to enhance stability of bird populations across different scales. This can be done with improved data generated through monitoring activities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Avifaunal assemblages within fresh and saltwater resources around a national park; the case of Lake Munyanyange, Lake Edward, and Kazinga Channel in Southwestern Uganda

Aggrey,

Akisiimire,

Nicholas

et al. 2024

Preprint

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Assessing the impact of engine and non-engine urban noises on the calls of urban frogs: a natural experiment

Serrano,

Vázquez-Hernández,

Hernández-Jiménez

et al. 2024

acta ethol

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Urban noise can potentially disturb the acoustic signals of animals inhabiting urban areas. Although a wide variety of noises from different sources is common in cities, the impact of non-engine noise on animal calls is less studied. In a natural experiment, we evaluated the effect of different urban noises on the advertisement calls of urban frogs (Eleutherodactylus nitidus) in the metropolitan area of Puebla, Mexico. We recorded and analyzed 672 advertisement calls from 28 male frogs and the corresponding environmental noises from three distinct localities. Our analysis focused on four acoustic properties of the calls: inter-call interval, call duration, dominant frequency, and call amplitude. To standardize the amplitude measurements of sound pressure levels produced by noise and frog calls, we employed a practical approach using a reference signal for calibration. We treated the longitudinal data of different noises occurring before, during, and after advertisement calls as repeated measures within the urban locations. During our samplings, frogs called amidst spontaneous urban noises, including dog barking, fireworks, and vehicle engine sounds. Our results indicate that vehicle engine sounds and dog barking do not cause significant distortions in the calls of these urban frogs. However, we observed slight variations in the dominant frequency of calls, decreasing by 11 Hz, during and after fireworks. Given the observed plasticity of E. nitidus in response to noise, urban noises may not pose a severe problem for this urban frog.

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Vocal accommodation in bonobos

Mathevon,

Keenan,

Stevens

et al. 2025

Animal Behaviour

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Anthropogenic noise and habitat structure shaping dominant frequency of bird sounds along urban gradients

Cited by 6 publications

References 74 publications

Avifaunal assemblages within fresh and saltwater resources around a national park; the case of Lake Munyanyange, Lake Edward, and Kazinga Channel in Southwestern Uganda

Avifaunal assemblages within fresh and saltwater resources around a national park; the case of Lake Munyanyange, Lake Edward, and Kazinga Channel in Southwestern Uganda

Assessing the impact of engine and non-engine urban noises on the calls of urban frogs: a natural experiment

Vocal accommodation in bonobos

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