Forest structure reshapes sound propagation, affecting animal communication and sensor performance

Evidence

Compared to an open field, a forest introduces many complicating effects on acoustic propagation, including different ground conditions arising from the presence of a litter layer, scattering and reverberation from trunks, branches, and foliage, absorption by the vegetation, and changes in the microclimate within dense arrangements of trees. Depending on the situation and frequency band of interest, these conditions may have an impact on the perception of traffic noise, communication between birds or animals, and sensor system performance. — Donald G. Albert, Michelle E. Swearingen, Frank E. Perron, and David L. Carbee, Low Frequency Acoustic Pulse…, 19

Categorization

• ADDENDUM: Directly extends ‘Grafting & Growth: On Trees as Infrastructure’ — here trees function as an acoustic medium (scatterers, absorbers, microclimate shapers) rather than a physical one.
• SEED: Angle: ‘The Forest as Instrument’ — how trunk spacing, litter depth, and foliage geometry turn woodland into an acoustic architecture that wildlife (and now drone/mic arrays) must navigate.