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. 2021 Apr 1;8:97. doi: 10.1038/s41597-021-00877-z

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© The Author(s) 2021

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Fig. 3 — Collection procedures of vascular flora by TERN Ecosystem Surveillance team. (a) Collection of vascular flora by ground observers. (b) Voucher specimens are collected with enough material to fill an A3 size herbarium sheet, pressed, and ultimately sent to local herbaria for identification, (c) subsamples of each voucher specimen are collected from the main voucher sample to enable stable isotope analysis, the subsample is placed in a gauze “teabag” and (d) then sealed in a plastic container with 1 cm depth of silica granules (Photo Credit: TERN Ecosystem Surveillance program).