Soundscape phenology: The effect of environmental and climatic factors on birds and insects in a subtropical woodland

Scarpelli, Marina D. A.; Roe, Paul; Tucker, David; Fuller, Susan

doi:10.1016/j.scitotenv.2023.163080

Cited by 4 publications

(18 citation statements)

References 44 publications

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“…birds) to calculate the AEI (see advances in source separation in [52]), perhaps we would also detect two peaks of insect acoustic activity as reported in prior research [14,31]. Despite this limitation about the use of acoustic indices, a soundscape analysis approach is probably reflecting broader patterns of insect acoustic activity [9,18,19].…”

Section: Discussionmentioning

confidence: 83%

“…We also predict that (b) insect acoustic activity will vary among recording hours because several environmental factors (e.g. moonlight, temperature) may influence their activity and sound production throughout the night in tropical forests [12,19,30,31]. Our findings will contribute to a better understanding of the role of time, habitat and vegetation structure in shaping insect acoustic activity within diverse Amazonian ecosystems and might be useful to guide future research on other tropical regions.…”

Section: Introductionmentioning

confidence: 84%

“…Several acoustic indices have been developed to aid in the interpretation of soundscapes [17]. Among their many potential applications, indices can be used to track how insect acoustic activity changes across different sites and time periods [18,19]. Using indices to track activity levels of specific taxa is an alternative use of acoustic indices because many were originally developed to be used as proxies for species richness [17,20,21] and composition [9].…”

Section: Introductionmentioning

confidence: 99%

“…Several groups of insects produce sounds at specific (e.g. higher than birds) and narrow frequencies [25], and therefore acoustic indices could be an effective alternative for monitoring the relationship between insect acoustic activity and other variables of interest [19]. Indeed, some of the existing indices already have been used to describe temporal activity patterns of insect communities [18,19,26].…”

Section: Introductionmentioning

confidence: 99%

“…higher than birds) and narrow frequencies [25], and therefore acoustic indices could be an effective alternative for monitoring the relationship between insect acoustic activity and other variables of interest [19]. Indeed, some of the existing indices already have been used to describe temporal activity patterns of insect communities [18,19,26]. However, our current knowledge about the use of acoustic indices for monitoring insects is still limited because most prior research using this technique has focused on temperate birds [4,22].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Time and habitat structure shape insect acoustic activity in the Amazon

Do Nascimento,

Pérez-Granados,

Alencar

et al. 2024

Phil. Trans. R. Soc. B

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Insects are the most diverse animal taxon on Earth and play a key role in ecosystem functioning. However, they are often neglected by ecological surveys owing to the difficulties involved in monitoring this small and hyper-diverse taxon. With technological advances in biomonitoring and analytical methods, these shortcomings may finally be addressed. Here, we performed passive acoustic monitoring at 141 sites (eight habitats) to investigate insect acoustic activity in the Viruá National Park, Brazil. We first describe the frequency range occupied by three soniferous insect groups (cicadas, crickets and katydids) to calculate the acoustic evenness index (AEI). Then, we assess how AEI varies spatially and temporally among habitat types, and finally we investigate the relationship between vegetation structure variables and AEI for each insect category. Overall, crickets occupied lower and narrower frequency bands than cicadas and katydids. AEI values varied among insect categories and across space and time. The highest acoustic activity occurred before sunrise and the lowest acoustic activity was recorded in pastures. Canopy cover was positively associated with cricket acoustic activity but not with katydids. Our findings contribute to a better understanding of the role of time, habitat and vegetation structure in shaping insect activity within diverse Amazonian ecosystems. This article is part of the theme issue ‘Towards a toolkit for global insect biodiversity monitoring’.

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Section: Discussionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Time and habitat structure shape insect acoustic activity in the Amazon

Do Nascimento,

Pérez-Granados,

Alencar

et al. 2024

Phil. Trans. R. Soc. B

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Complex and highly saturated soundscapes in restored oak woodlands reflect avian richness and abundance

Persche,

Sagar,

Burivalova

et al. 2024

Oecologia

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Amazonian soundscapes: unravelling the secrets of insect acoustic niches in diverse habitats

Do Nascimento,

Pérez-Granados,

Rodrigues Alencar

et al. 2023

Preprint

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Insects are the most diverse animal taxon on Earth and play a key role in ecosystem functioning. However, they are often neglected from biodiversity surveys due to the difficulties of monitoring this small and hyper-diverse taxon. With technological advancements in biomonitoring and analytical methods, these shortcomings may finally be addressed. Here, we performed passive acoustic monitoring at 141 sites (eight habitats) in the Amazon to advance insect surveys using acoustic methods. We first describe the frequency range occupied by three soniferous insect groups (cicadas, crickets, and katydids) to calculate the Acoustic Evenness Index (AEI). Then, we assess the temporal and spatial variations of AEI among the insect categories, and finally we investigate the relationship among vegetation structure variables and AEI for each category. Overall, crickets occupied lower and narrower frequency bands than cicadas and katydids. AEI values varied among insect categories and across space and time. There was higher acoustic activity before sunrise and lower acoustic activity was recorded at pastures. Canopy cover was positively associated with crickets' acoustic activity but not with katydids. Our findings contribute to a better understanding of the role of time, habitat, and vegetation structure in shaping insect activity within the diverse Amazonian ecosystem.

show abstract

Soundscape phenology: The effect of environmental and climatic factors on birds and insects in a subtropical woodland

Cited by 4 publications

References 44 publications

Time and habitat structure shape insect acoustic activity in the Amazon

Time and habitat structure shape insect acoustic activity in the Amazon

Complex and highly saturated soundscapes in restored oak woodlands reflect avian richness and abundance

Amazonian soundscapes: unravelling the secrets of insect acoustic niches in diverse habitats

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