Articles | Volume 21, issue 7
Hydrol. Earth Syst. Sci., 21, 3799–3810, 2017
https://doi.org/10.5194/hess-21-3799-2017
Hydrol. Earth Syst. Sci., 21, 3799–3810, 2017
https://doi.org/10.5194/hess-21-3799-2017
Research article
 | Highlight paper
25 Jul 2017
Research article  | Highlight paper | 25 Jul 2017

Every apple has a voice: using stable isotopes to teach about food sourcing and the water cycle

Erik Oerter et al.

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Cited articles

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Fruits take up soil water as they grow, and thus the fruit water is related to the rain or irrigation the crop receives. We used a novel sampling system to measure the stable isotopes of H and O in the fruit water to determine its geographic origin by comparing it to maps of isotopes in rain. We used this approach to teach an audience of science students and teachers about water cycle concepts and how humans may modify the water cycle through agriculture and irrigation water diversions.