Dear all,

We are currently conducting a meta-analysis on the acoustic adaptation hypothesis across animals. We aim to test whether habitat structure predicts animal vocalisations (within and across species) and specifically, if species inhabiting dense vegetation are prone to vocalise at lower frequencies, narrower frequency ranges, and have longer inter-element intervals compared to species living in open areas.

As meta-analyses are affected by publication bias, we are looking for unpublished datasets that quantified acoustic variables across different types of habitat, within and/or across species.

In case you have, or know of such unpublished data sets, please let’s get in touch - we would be really happy to hear about it from you! Moreover, we would be very grateful if you could point us to published works that provide this type of information but may go unnoticed in database searches applying search terms like ‘acoustic adaptation’, ‘song’, ‘acoustic’, ‘habitat’ and ‘vegetation’.

For any suggestions or questions please email: [email protected]

Thank you very much in advance!

Bárbara Freitas (MNCN-CSIC, Madrid and EDB, Toulouse)

with

Tim Janicke (CEFE-CNRS, Montpellier)

Borja Milá (MNCN-CSIC, Madrid)

Christophe Thébaud (EDB, Toulouse)