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. 2021 Jun 15;11:11362. doi: 10.1038/s41598-021-90598-5

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Comparison of cost-efficiency between survey methods to recover the total mammal diversity at the study scale. The figures show the curves of cumulative total mammals’ diversity (y-axis) per thousand USD (x-axis) invested in the survey. Colours indicate the different survey methods and years as shown in the legend. The panel (a) compares methods’ cost effectiveness when all the taxa detected by either method are included in the analysis, while panel (b) only includes species targeted by camera trapping methods (see “Methods” section). Detailed cost analyses per survey are presented in the method section (see also Table 1 and Supplementary Table 4).