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. 2020 Oct 15;10:17450. doi: 10.1038/s41598-020-74422-0

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© The Author(s) 2020

Open AccessThis 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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Marinkas Quellen. (A) UAV-based hyperspectral mosaic overlaying high-resolution UAV-based orthomosaic created in QGIS 3.12 (own data). The locations of in-situ measurements taken for validation are shown in yellow. (A.1) Close-up of the HSI data superposed with pixels mapped with 800 nm absorption feature (yellow to red indicating the increasing depth of the absorption feature i.e., high = very deep, low = shallow). The acquisition location of spectra shown in A.2 is represented by a blue circle and point 2. (A.2) Comparison of averaged Rikola with handheld spectra. (B) Field photo showing the area selected for Nd mapping.