Articles | Volume 21, issue 7
Hydrol. Earth Syst. Sci., 21, 3799–3810, 2017
Hydrol. Earth Syst. Sci., 21, 3799–3810, 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

Bar, V.: Children's views about the water cycle, Sci. Educ., 73, 481–500, 1989.
Bowen, G. J.: Isoscapes: spatial pattern in isotopic biogeochemistry, Annu. Rev. Earth Planet. Sc., 38, 161–187, 2010.
Bowen, G. J. and Revenaugh, J.: Interpolating the isotopic composition of modern meteoric precipitation, Water Resour. Res., 39, 1299–1312,, 2003.
CDFA: California Agricultural Statistics Review: 2015–2016, California Department of Food and Agriculture, Sacramento, CA, 126, 2016.
Cerling, T. E., Barnette, J. E., Bowen, G. J., Chesson, L. A., Ehleringer, J. R., Remien, C. H., Shea, P., Tipple, B. J., and West, J. B.: Forensic Stable Isotope Biogeochemistry, Annu. Rev. Earth Planet. Sc., 44, 175–206, 2016.
Short summary
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.