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I request permission for the open-access journal PLOS ONE to publish Fig.1 Map of study area with location of sampling sites under the Creative Commons Attribution License (CCAL) CC BY 4.0 (http://creativecommons.org/licenses/by/4.0/). Please be aware that this license allows unrestricted use and distribution, even commercially, by third parties. Please reply and provide explicit written permission to publish Fig.1 under a CC BY license and complete the attached form.