Species Richness (of Insects) Drives the Use of Acoustic Space in the Tropics

Aide, T. Mitchell; Hernández-Serna, Andrés; Campos‐Cerqueira, Marconi; Acevedo‐Charry, Orlando; Deichmann, Jessica L.

doi:10.3390/rs9111096

Cited by 81 publications

(90 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It would be unrealistic to assume that an acoustic index could be equally sensitive to sound types that vary dramatically in spectral or temporal occupancy (Gasc, Pavoine, Lellouch, Grandcolas, & Sueur, 2015). In the case of this acoustic community, acoustic indices offered a much better window into overall sound type occupancy, which has recently been linked to sound type richness in terrestrial tropical habitats (Aide, Hern andez-Serna, Campos-Cerqueira, Acevedo-Charry, & Deichmann, 2017). In a similar study on the soundscapes of temperate ponds, Desjonqu eres et al (2015) found that only the acoustic index Acoustic Richness was marginally correlated with sound type richness (correlation of 0.2) and abundance (correlation of 0.19), once controlling for the SNR of the sound types.…”

Section: Acoustic Index-and Sound Type-based Soundscape Measurementsmentioning

confidence: 99%

Acoustic monitoring reveals diversity and surprising dynamics in tropical freshwater soundscapes

et al. 2018

View full text Add to dashboard Cite

Freshwater systems are globally threatened and in need of enhanced monitoring and assessment. We applied soundscape recording and analysis—which presents an opportunity for long‐term, high‐resolution animal community monitoring and assessment—to a freshwater context to better understand the acoustic diversity and dynamics of these systems. We recorded the aquatic soundscape of a Neotropical freshwater swamp in Costa Rica for 23 days in January and February 2015 during the dry season. We classified biological sound types in these recordings and developed measurements of richness and occupancy based on this classification. We also calculated six complementary acoustic indices to assess soundscape diversity and daily and longer‐term soundscape dynamics, and we examined correlations between these acoustic indices and sound type metrics. We found rich soundscapes in which biological sounds were almost always present, and we classified 18 sound types that we attribute to aquatic insects. These sound types showed distinct daily patterns and exhibited temporal and spectral acoustic niche partitioning. Sound type richness was most correlated with the number of peaks index (correlation = .36; p < .001), while sound type occupancy was most correlated with the Bioacoustic Index (correlation = .92; p < .001). In contrast to generally high levels of acoustic activity, there were brief (approximately 1 hr), unexpected quiet periods around dawn and dusk. This study represents an early attempt to comprehensively describe tropical freshwater soundscapes in a systematic and quantitative manner. We demonstrate that sound type classification and the quantification of acoustic occupancy capture aspects of soundscape diversity and dynamics that are complementary to those assessed by acoustic indices. Our analyses reveal that the soundscapes of this tropical wetland were diverse and exhibited daily dynamics that differed from those found in other ecosystems.

show abstract

Section: Acoustic Index-and Sound Type-based Soundscape Measurementsmentioning

confidence: 99%

Acoustic monitoring reveals diversity and surprising dynamics in tropical freshwater soundscapes

et al. 2018

View full text Add to dashboard Cite

show abstract

“…)] and sampling a wider range of taxonomic groups (Aide et al . ). We consider camera trapping and acoustic monitoring to be complementary in terms of taxonomic groups and advocate the use of both methods where possible.…”

Section: Advantages Of Passive Acoustic Monitoringmentioning

confidence: 97%

“…, Aide et al . , Rankin & Axel ), yet there is no consensus to date as to which are most effective, primarily due to the difficulties in generalizing across taxa and ecosystems (Buxton et al . ).…”

Section: Challengesmentioning

confidence: 99%

“…The 'soundscape' includes all sounds emanating from any given habitat, which can be classified with respect to their source: geophony (climate and geography), biophony (all wildlife), and anthrophony (human activities; Pijanowski et al 2011). Analysis and monitoring of these various contributions to a soundscape can permit rapid assessment of biodiversity as well as the health and stability of an ecosystem (e.g., Blumstein et al 2011, Fuller et al 2015, Bertucci et al 2016, Burivalova et al 2017, Deichmann et al 2017, Staaterman et al 2017.…”

mentioning

confidence: 99%

See 1 more Smart Citation

It's time to listen: there is much to be learned from the sounds of tropical ecosystems

et al. 2018

View full text Add to dashboard Cite

Knowledge that can be gained from acoustic data collection in tropical ecosystems is low‐hanging fruit. There is every reason to record and with every day, there are fewer excuses not to do it. In recent years, the cost of acoustic recorders has decreased substantially (some can be purchased for under US$50, e.g., Hill et al. 2018) and the technology needed to store and analyze acoustic data is continuously improving (e.g., Corrada Bravo et al. 2017, Xie et al. 2017). Soundscape recordings provide a permanent record of a site at a given time and contain a wealth of invaluable and irreplaceable information. Although challenges remain, failure to collect acoustic data now in tropical ecosystems would represent a failure to future generations of tropical researchers and the citizens that benefit from ecological research. In this commentary, we (1) argue for the need to increase acoustic monitoring in tropical systems; (2) describe the types of research questions and conservation issues that can be addressed with passive acoustic monitoring (PAM) using both short‐ and long‐term data in terrestrial and freshwater habitats; and (3) present an initial plan for establishing a global repository of tropical recordings.

show abstract

“…The primary limitation to this method is the need for large amounts of digital storage and the development of time demanding acoustic pattern recognition models. Aide et al (2017) suggest a potential alternative to these models for generalizing the relative diversity between sites: Acoustic Space Use (ASU). ASU is the percentage of acoustic space, comprised of both time and frequency ranges, used by the collective sound of the faunal community.…”

Section: Introductionmentioning

confidence: 99%

Urbanization drives the acoustic diversity of mangrove anurans and avifauna in Puerto Rico

Branoff

2018

Preprint

View full text Add to dashboard Cite

The mangroves of Puerto Rico occupy a broad gradient of urbanization that offers a chance to test hypotheses on urban faunal communities from both terrestrial and mangrove systems. These hypotheses state that urban avifaunal communities are less diverse, with greater representation by generalists, but that certain mangrove specialists can utilize urban landscapes. Much of this is said to be driven by food resources, with frugivores and nectarivores benefiting from abundant residential flowers and fruits, while insectivores are driven away by low food resources. This study used passive acoustic monitoring to identify the audible anuran and avifaunal species in mangroves across the urban gradient of Puerto Rico. Three anurans and twenty-four avian species were detected across all sites, with eighteen species found at the most diverse site, and six at the least diverse site. The most urban communities were more similar to each other and characterized by low diversity, especially of invertivores, mangrove specialists, and endemics. The least urban communities, however, were less like each other and more diverse than their more urban counterparts. Greater surrounding vegetation cover was the strongest overall predictor of increased faunal diversity, although urban coverage and population density were also strongly correlated with some guilds and species. Soundscape analyses showed that acoustic space use was a strong predictor of site diversity and is thus a sufficiently accurate faster alternative to detecting individual species. This will be an important tool in the continued monitoring of these forests, which may experience changes associated with ongoing urbanization and sea-level rise.

show abstract

Species Richness (of Insects) Drives the Use of Acoustic Space in the Tropics

Cited by 81 publications

References 45 publications

Acoustic monitoring reveals diversity and surprising dynamics in tropical freshwater soundscapes

Acoustic monitoring reveals diversity and surprising dynamics in tropical freshwater soundscapes

It's time to listen: there is much to be learned from the sounds of tropical ecosystems

Urbanization drives the acoustic diversity of mangrove anurans and avifauna in Puerto Rico

Contact Info

Product

Resources

About