Bioacoustic monitoring of animal vocal behavior for conservation

Teixeira, Daniella; Maron, Martine; Rensburg, Berndt J. van

doi:10.1111/csp2.72

Cited by 78 publications

(60 citation statements)

References 149 publications

(251 reference statements)

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“…Also, distinguishing between songs, which are typically territorial, and calls can reveal whether the habitat is suitable for breeding or only visited by stray or foraging birds. Bioacoustic monitoring can even support monitoring threatened species for “acoustic conservation behavior” studies (Teixeira et al ). https://onlinelibrary.wiley.com/doi/full/10.1111/csp2.72.…”

Section: Comparison Of Survey Methodsmentioning

confidence: 99%

Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide

Darras

Batáry

Furnas

et al. 2019

Ecological Applications

143

105

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Autonomous sound recording techniques have gained considerable traction in the last decade, but the question remains whether they can replace human observation surveys to sample sonant animals. For birds in particular, survey methods have been tested extensively using point counts and sound recording surveys. Here, we review the latest evidence for this taxon within the frame of a systematic map. We compare sampling effectiveness of these two survey methods, the output variables they produce, and their practicality. When assessed against the standard of point counts, autonomous sound recording proves to be a powerful tool that samples at least as many species. This technology can monitor birds in an exhaustive, standardized, and verifiable way. Moreover, sound recorders give access to entire soundscapes from which new data types can be derived (vocal activity, acoustic indices). Variables such as abundance, density, occupancy, or species richness can be obtained to yield data sets that are comparable to and compatible with point counts. Finally, autonomous sound recorders allow investigations at high temporal and spatial resolution and coverage, which are more cost effective and cannot be achieved by human observations alone, even though small‐scale studies might be more cost effective when carried out with point counts. Sound recorders can be deployed in many places, they are more scalable and reliable, making them the better choice for bird surveys in an increasingly data‐driven time. We provide an overview of currently available recorders and discuss their specifications to guide future study designs.

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Section: Comparison Of Survey Methodsmentioning

confidence: 99%

Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide

Darras

Batáry

Furnas

et al. 2019

Ecological Applications

143

105

View full text Add to dashboard Cite

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“…Most studies of bird community responses to environmental changes have used traditional methods for collecting information on avian biodiversity, e.g., point-count surveys or spot mapping (e.g., Pejchar et al 2018, Frishkoff and Karp 2019, Roels et al 2019, Santillán et al 2020. Bioacoustic monitoring is an emerging tool for studying animals on the basis of their vocalizations, and has proven to be very effective for monitoring bird communities (Burivalova et al 2019, Teixeira et al 2019. Bioacoustic surveys can increase the amount of data collected while creating a permanent record of these data and using fewer resources (Shonfield andBayne 2017, Teixeira et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Bioacoustic analyses reveal that bird communities recover with forest succession in tropical dry forests

Owen¹,

Melin²,

Campos³

et al. 2020

ACE

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With expanding anthropogenic disturbances to forests around the world, forest restoration is increasingly important for bird conservation. Restoration monitoring is critical for understanding how birds respond to forest regeneration and for assessing the effectiveness of restoration efforts. Using bioacoustic monitoring, we recorded bird communities during both dry and wet seasons at 62 sites along a chronosequence of tropical dry forests in the Área de Conservación Guanacaste in Costa Rica. Tropical dry forests rank among the globe's most imperiled ecosystems, adding special urgency to their restoration and accompanying restoration monitoring. We found that bird species diversity, richness, and abundance increase with measures of forest maturity. Our results show that bird communities in regenerating areas become more similar to those of undisturbed areas as forests mature. This suggests that bird communities are recovering to predisturbed conditions in regenerating sites, and that maturing tropical dry forests are home to an increasingly diverse and abundant community of birds. We conducted an additional assessment, by sampling 30 locations using point-counts that were originally surveyed 23 years ago. We found that species richness and abundance were similar across this 23-year interval, although bird community composition changed because several forest-specialist species were only detected in the later period. Our research reveals that the regenerating tropical dry forests of northwestern Costa Rica have recovered species richness and abundance levels and are currently undergoing a succession in community composition toward that of a primary tropical dry forest. Our study shows bird communities recovering in a nearly century-old chronosequence of regenerating forests. Des analyses bio-acoustiques révèlent que les populations aviaires se rétablissent avec la régénération forestière dans les forêts tropicales sèches RÉSUMÉ. Compte tenu du développement des perturbations anthropiques dans les forêts du monde entier, la reforestation est de plus en plus importante pour la conservation des oiseaux. La surveillance de la restauration des forêts est essentielle pour comprendre la manière dont les oiseaux réagissent à la régénération des forêts et pour évaluer l'efficacité des efforts de reforestation. Nous avons utilisé la surveillance bio-acoustique pour enregistrer les populations aviaires au cours de la saison sèche et de la saison humide sur 62 sites le long de la chronoséquence des forêts tropicales sèches dans l'Área de Conservación Guanacaste au Costa-Rica. Les forêts tropicales sèches font partie des écosystèmes les plus menacés de la planète, ce qui confère un caractère particulièrement urgent à leur restauration et à la surveillance de ces entreprises de reforestation. Nous avons constaté que la diversité, la richesse et l'abondance des espèces d'oiseaux augmentent avec les mesures de maturité des forêts. Nos résultats démontrent que les populations aviaires dans les zones de reforestation s'apparentent da...

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“…Bioacoustic sound recordings can provide a rich source of behavioural data for species whose vocal diversity is known (see review by Teixeira et al 2019). Particularly for social species, which usually exhibit more complex repertoires (Freeberg et al 2012;Leighton 2017), vocalisations can indicate specific behaviours, demographics (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Bioacoustic studies often focus on what vocalisations a species makes; this helps determine presence-absence, a common objective of bioacoustic studies. However, the ability to understand from vocalisations who the signaller is and why they are vocalising (behavioural context) can greatly improve the resolution of data acquired from bioacoustic programs (Teixeira et al 2019). Through context-specific vocalisations, bioacoustics could help to monitor species' behaviours and the relationship to habitat features, and thereby inform conservation decision-making.…”

Section: Discussionmentioning

confidence: 99%

“…Animal vocalisations can signify diverse behavioural states. For vocal species, sound data collected in bioacoustic studies can therefore indicate particular behavioural contexts, which can benefit conservation if they provide new insights into a population's state, trajectory or response to management (Teixeira et al 2019). For example, critical life history events like mating and recruitment may be detected via contextspecific vocalisations (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Nest‐associated vocal behaviours of the south‐eastern red‐tailed black cockatoo, Calyptorhynchus banksii graptogyne, and the Kangaroo Island glossy black cockatoo, C. lathami halmaturinus

Teixeira

Hill

Barth³

et al. 2020

Austral Ecology

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Animal vocalisations can signify diverse behavioural contexts, knowledge of which can be applied in bioacoustic monitoring programs. Australia's endemic black cockatoos (Calyptorhynchus sp., family Cacatuidae) are highly vocal species that are threatened in many locations. In this study, we describe the nest-associated vocal behaviours of two endangered subspecies of black cockatoo, the southeastern red-tailed black cockatoo, C. banksii graptogyne and the Kangaroo Island glossy black cockatoo, C. lathami halmaturinus. Breeding success is limiting their recoveries and nest monitoring is challenging, but vocal recordings might provide valuable longterm information hard to obtain otherwise. We recorded daily vocal activity at wild nests of both cockatoos using autonomous sound recorders. Combined with behavioural observations and video footage, we identified vocalisations characteristic of six behavioural contexts at nests: birds in flight, while perched, during begging (adult females), during courtship displays (adult males), when entering or sitting near to the nest hollow entrance (adult females), and from nestlings. Linear discriminant analysis on 12 acoustic measurements correctly classified 58.4% of calls of the red-tailed black cockatoo (n = 907 calls from eight nests) and 62.9% of calls of the glossy black cockatoo (n = 1632 calls from 11 nests). In both subspecies, the female nest call and nestling calls are the most conspicuous vocal indicators of active nesting, and therefore should be considered for their bioacoustic potential. Other adult vocalisations indicate a range of behavioural contexts that could be informative for monitoring nesting behaviour, and its association to habitat features, in these endangered subspecies.

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Bioacoustic monitoring of animal vocal behavior for conservation

Cited by 78 publications

References 149 publications

Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide

Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide

Bioacoustic analyses reveal that bird communities recover with forest succession in tropical dry forests

Nest‐associated vocal behaviours of the south‐eastern red‐tailed black cockatoo, Calyptorhynchus banksii graptogyne, and the Kangaroo Island glossy black cockatoo, C. lathami halmaturinus

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