Call attenuation data of three frog species in tree plantations and a native forest in southern Brazil

We performed sound transmission experiments using calls of three anuran species native to southern Brazil: Boana bischoffi, B. leptolineata, and Hylodes meridionalis. We compared sound attenuation between the native forest and forestry monocultures (Eucalyptus sp. and Pinus sp. forests), and included distance from the sound source, air temperature, humidity, and vegetation density. We calculated call attenuation as the difference of call amplitude (represented by the peak power parameter) between the call amplitude value at the previous distance recorded minus the call amplitude value at the distance of interest (e.g., call attenuation at 2 m = call amplitude at 1 m - call amplitude at 2 m). We included the atmospheric variables as delta values by estimating the difference between each recording distance (e.g., air temperature at 2 m = air temperature at 1 m - air temperature at 2 m).