Methodological developments in acoustics
The experimental designs deployed by the team to address current issues in conservation biology usually involve passive acoustic monitoring over extensive spatio-temporal replicates, generating a massive amount of data that cannot be processed manually. Beyond the sampling design structure, the nature of the metrics we use also varies greatly according to the study aims, ranging from simple characterizations of communities and species activities to functional metrics such as feeding and movement of individuals. The team therefore devotes part of its research to the development of tools to support this variety of studies, proposing solutions for the automation of data preparation and processing processes, as well as new metrics.
The methodological developments can be divided into three categories:
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The development of automated and semi-automated identification tools for acoustic signals (biological and anthropogenic), making it possible to massively assign an identity to the acoustic recordings collected.
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The calculation of functional metrics from the content of sound recordings, enabling the assignment of behaviors to recorded individuals, such as the probability that an individual is foraging or in transit.
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The development of movement tracking methods based on the geolocalization of calls in one or three dimensions by synchronizing microphones, enabling the description of individual flight behavior and inter-individual interactions.