Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2023 Nov 20;27:23312165231212032. doi: 10.1177/23312165231212032

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2023

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

PMC Copyright notice

Figure 3. — 2D-AMi spectra for a single terrestrial biome (an African savannah (Location; Kenya, Africa: GPS: 1°18′10.41″N/37°06′37.84″E; Date: 22.02.83) recorded at three moments of the day: dawn (05:15 am), dusk (06:20 pm) and night (08:00 pm). All sounds were 30-s long and were equated in long-term root-mean-square (rms) power. All sounds can be listened to from the recordings provided in the “Supplementary Material” section. Source: B. Krause, Wild Sanctuary. See Figure 2 for other details. Modulation spectra show large diurnal variations, reflecting mainly diel cycles in biological activity (i.e., dawn or dusk choruses produced by birds, insects and amphibians). Modulation spectra suggest that the dusk chorus should be perceived as more dramatic than the dawn one for that specific habitat.