Biodiversity is usually regarded as a bouquet of life forms, differing in their size, shape or colors. The concept of biodiversity is therefore mainly considered through a visual perspective: we see a sunny alpine meadow, a luxuriant tropical forest or an animated coral reef. However, biodiversity is not only a patchwork of iconic images of landscapes or charismatic species like butterflies, elephants, giant pandas, clown fish or whales but also is an ensemble of individual and collective sounds: we can hear biodiversity by listening to a natural soundscape or particular species. Animals produce highly diverse sounds for movement, navigation and communication. Plants indirectly generate sounds when moved by the wind or hit by the rain and also produce internal sounds due to fluid dynamics. The variation of all these sounds, emanating intentionally or involuntarily from living organisms – birds, mammals, amphibians, insects, fish, plants and others in their habitats – comprise acoustic biodiversity.  

https://www.researchgate.net/publication/355231598_Acoustic_biodiversity