Bears of the Pleistocene

[Ghari Sher]

(11-02-2018, 02:37 PM)brotherbear Wrote: Very interesting study Ghari Sher. I do not try to pull the wool over anyone's eyes; I have a G.E.D. education. So, I have very little understanding of the graphs. But that which I do understand, interesting is too little a word to describe.

I'm not that far into the education system either, I suppose.
In any case, I am far from an expert on the field of stable isotope studies, but my understanding of the concept is that different plant tissues contain different concentrations of certain stable isotopes of carbon and nitrogen, and the animals that eat them will have their distinct isotopic signatures and so will their predators, but through each trophic level the concentration of certain stable isotopes will increase, so predators show up with higher values on the graph, usually. Predators with similar isotopic values will have eaten similar prey with dietary overlap, predators with dissimilar values eat less prey in common, and so forth.
This is as far as my understanding goes, if you want to learn more about how that works, I'd suggest looking it up on YouTube or some other site, e.g.

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