Gaps in terrestrial soundscape research: It’s time to focus on tropical wildlife

Scarpelli, Marina D. A.; Ribeiro, Milton Cézar; Teixeira, Fernanda Zimmermann; Young, Robert J.; Teixeira, Camila Palhares

doi:10.1016/j.scitotenv.2019.135403

Cited by 25 publications

(26 citation statements)

References 66 publications

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“…Future studies comparing the effectiveness of different methods using the same acoustic dataset may be useful to provide more reliable comparisons among approaches. The lack of studies using ARUs to estimate bird density in tropical areas is a crucial gap that should be addressed (Scarpelli et al 2019), especially because ARUs could be extremely useful in the tropics, where the dominant vegetation is usually tall and dense and the logistics of human access are difficult (P erez-Granados & Schuchmann 2020b). However, some of the methods reviewed here (e.g.…”

Section: Effectiveness and Applicabilitymentioning

confidence: 99%

Estimating bird density using passive acoustic monitoring: a review of methods and suggestions for further research

Pérez‐Granados

Traba

2021

Ibis

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Passive acoustic monitoring is a non-invasive tool for automated wildlife monitoring. This technique has several advantages and addresses many of the biases related to traditional field surveys. However, locating animal sounds using autonomous recording units (ARUs) can be technically challenging and therefore ARUs have traditionally been little employed to estimate animal density. Nonetheless, several approaches have been proposed in recent years to carry out acoustic-based bird density estimations. We conducted a literature review of studies that used ARUs for estimating bird densities or bird abundances in order to describe the applications and improve future monitoring programmes. We detected a growing interest in the use of ARUs for estimating bird density in the last 6 years , with a total of 31 articles assessing the topic. The most common approach was to estimate the relationship between the number of vocalizations per recording time with bird density or bird abundance estimated in the field (61%). In 26 studies (79%), bird estimates obtained by human surveyors agreed with those obtained using ARUs. Some approaches have proven able to reduce biases in acoustic surveys, such as considering imperfect detection (spatially explicit capture-recapture, using microphone arrays), applying paired acoustic sampling to control for different sampling radius between humans and ARUs, or including relative sound level measurements that allow researchers to estimate bird distance to recorder. However, several studies did not include any covariates to reduce existing biases and some did not estimate the sampling radius of the recorder, which may hamper future comparisons between human and ARU surveys. Future studies should include a measurement of the sampling radius of the recorder employed to be able to obtain density estimations using ARUs. Finally, we provide some guidelines to improve the applicability of ARUs to infer bird population estimates in future studies.

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Section: Effectiveness and Applicabilitymentioning

confidence: 99%

Estimating bird density using passive acoustic monitoring: a review of methods and suggestions for further research

Pérez‐Granados

Traba

2021

Ibis

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“…Air-borne sounds (i.e., air-borne mechanical waves) are ubiquitous in terrestrial environments, and acoustic signals are considered one of the most efficient forms of communication ( Wilkins et al., 2013 ). In recent years, with the emerging fields of soundscape ecology ( Pijanowski et al., 2011b ) and ecoacoustics ( Sueur and Farina, 2015 ), the number of studies describing the structure of natural soundscapes and interspecific acoustic interactions has increased rapidly ( Servick, 2014 ; Ruppé et al., 2015 ; Burivalova et al., 2019 ; Farina and Reid, 2020 ; Scarpelli et al., 2020 ) and obtained information has been applied to habitat assessment ( Rankin and Axel, 2017 ; Elise et al., 2020 ), community ecology ( Gasc et al., 2013 ; Dodgin et al., 2020 ), and conservation biology ( Krause and Farina, 2016 ; Sueur et al., 2019 ) among others. Humans' reliance on vocal communication and perception of other sounds in the environment has focused our attention on the soundscape, to the extent that we have largely overlooked the ecological importance and context of substrate-borne mechanical signaling (i.e., vibrational communication).…”

Section: Introductionmentioning

confidence: 99%

Hay meadow vibroscape and interactions within insect vibrational community

et al. 2021

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Summary Our experiences shape our knowledge and understanding of the world around us. The natural vibrational environment (vibroscape) is hidden to human senses but is nevertheless perceived and exploited by the majority of animals. Here, we show that the vibroscape recorded on plants in a temperate hay meadow is a dynamic low-frequency world, rich in species-specific vibrational signals. The overall vibroscape composition changed throughout the season and also depended on the plant species, as well as on the spatial position of individual plants within the meadow. Within the studied community, vibrationally signaling species sharing this communication channel avoided interference primarily by partitioning vibrational space on a fine temporal scale. The vibroscape is a reliable source of information in the environment and expands our understanding of ecological and evolutionary processes.

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“…A review of publications over the past four decades showed that the United States produced 571 publications whilst the United Kingdom 519 whereas the total publications of 11 countries in Southeast Asia were only 149 (To et al, 2018). In another review of 1,309 papers on soundscape, only 18% of the studies were conducted in tropical areas as compared to 56% on temperate regions (Scarpelli et al, 2020). This narrative review attempts to provide a preliminary referential point for new soundscape researchers and for the expansion of soundscape studies globally on diverse ecosystems, sonic components and meanings due to differences in climate, biodiversity and culture.…”

Section: Discussionmentioning

confidence: 99%

Narrative Review of Soundscape Studies

Chieng¹,

Chan²

2021

IJARBSS

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Soundscape generally refers to the sonic environment. The study of soundscape is significant to improve the quality of the environment, enhance the function of a place and promote a healthy and quality life as well as for the understanding of cultures. Given approximately half a century of scholarly studies on soundscape, the purpose of this conceptual paper is to present a narrative review of the literature on its definitions, methods, fields and space types from various disciplines to provide an overview and reference to novice soundscape researchers. As it is a wide-ranging field, soundscape study inherently encompasses research from multiple disciplines and mostly necessitates cross-disciplinary approaches. Among the diversity with different emphases on research frameworks and methodologies, soundscape research usually incorporates the three elements of acoustic properties, perception and place. The study can be for documentation, description, management and/or creation of soundscape. Some of the fields of soundscape study involve acoustic ecology, acoustemology, ecomusicology, acoustic engineering, artistic creativity or wellbeing. Data were usually collected through audio recordings, measurements of sound levels, soundwalks, questionnaires and interviews. Soundscape research has been increasing in America and European countries and can potentially be further expanded on different distinctive sound environments, ecosystems and sociocultural lifestyles.

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Gaps in terrestrial soundscape research: It’s time to focus on tropical wildlife

Cited by 25 publications

References 66 publications

Estimating bird density using passive acoustic monitoring: a review of methods and suggestions for further research

Estimating bird density using passive acoustic monitoring: a review of methods and suggestions for further research

Hay meadow vibroscape and interactions within insect vibrational community

Narrative Review of Soundscape Studies

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