Threshold of anthropogenic sound levels within protected landscapes in Kerala, India, for avian habitat quality and conservation.

Autor: Rajan SC; C V Raman Laboratory of Ecological Informatics, Indian Institute of Information Technology and Management - Kerala, Thiruvananthapuram, Kerala, 695581, India.; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India.; Cochin University of Science and Technology, Cochin, Kerala, 682022, India., M V; C V Raman Laboratory of Ecological Informatics, Indian Institute of Information Technology and Management - Kerala, Thiruvananthapuram, Kerala, 695581, India.; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India., Mitra A; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India., N P S; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India., K A; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India., Pillai MS; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India., R J; C V Raman Laboratory of Ecological Informatics, Indian Institute of Information Technology and Management - Kerala, Thiruvananthapuram, Kerala, 695581, India. jrnair@duk.ac.in.; School of Informatics, Kerala University of Digital Sciences, Innovation and Technology, Technopark Phase - IV, Trivandrum, Kerala, 695317, India. jrnair@duk.ac.in.; School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803116, India. jrnair@duk.ac.in.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Feb 01; Vol. 14 (1), pp. 2701. Date of Electronic Publication: 2024 Feb 01.
DOI: 10.1038/s41598-024-53153-6
Abstrakt: Anthrophony is an important determinant of habitat quality in the Anthropocene. Acoustic adaptation of birds at lower levels of anthrophony is known. However, threshold anthrophony, beyond which biophony starts decreasing, is less explored. Here, we present empirical results of the relationship between anthrophony and biophony in four terrestrial soundscapes. The constancy of the predicted threshold vector normalised anthropogenic power spectral density (~ 0.40 Watts/Hz) at all the study sites is intriguing. We propose the threshold value of anthropogenic power spectral density as an indicator of the avian acoustic tolerance level in the study sites. The findings pave the way to determine permissible sound levels within protected landscapes and directly contribute to conservation planning.
(© 2024. The Author(s).)
Databáze: MEDLINE
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