Strontium to calcium ratios (Sr/Ca) of American shad otoliths
![Strontium to calcium ratios (Sr/Ca) of American shad otoliths](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Wetzel-fw%20juv%20cr%20am%20shad%20fig.jpg?itok=LhgAmsWt)
Detailed Description
Variation in American shad life history patterns illustrated through strontium to calcium ratios (Sr/Ca) of American shad otoliths from Columbia River, WA midsize fish (a-c), Columbia River, WA estuary fish (d-f), and Vancouver Island, British Columbia marine residents (g-i). Solid black lines indicate annuli; dashed black lines indicate the otolith edge. Higher Sr/Ca indicates marine (above 0.0010).
Sources/Usage
Public Domain.