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Mapped data representing ocean ratios of carbon and nitrogen isotopes.

Mapped data representing ocean ratios of carbon and nitrogen isotopes.
Mapped data representing ocean ratios of carbon and nitrogen isotopes.
Mapped data representing ocean ratios of carbon and nitrogen isotopes.
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197411
McMahon, Kelton
Mapped data representing ocean ratios of carbon and nitrogen isotopes.
Illustration
12/29/2011
isoscape.jpg
Caption from Oceanus magazine, Vol. 49, No. 1 page 12;
Different areas of the ocean have different ratios of carbon and nitrogen isotopes. As sharks forage through these isotopically distinct habitats, they can absorb the isotopic signatures of local prey, giving scientists a natural tag to track their movements. In the map at left, color variations represent different isotope ratios of nitrogen (15N/14N)
in the ocean.
Map courtesy of Kelton McMahon
© Woods Hole Oceanographic Institution
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