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      Dietary interpretations for extinct megafauna using coprolites, intestinal contents and stable isotopes: Complimentary or contradictory?

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      Quaternary Science Reviews
      Elsevier BV

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          Carbon isotope compositions of terrestrial C3 plants as indicators of (paleo)ecology and (paleo)climate.

          A broad compilation of modern carbon isotope compositions in all C3 plant types shows a monotonic increase in δ(13)C with decreasing mean annual precipitation (MAP) that differs from previous models. Corrections for temperature, altitude, or latitude are smaller than previously estimated. As corrected for altitude, latitude, and the δ(13)C of atmospheric CO(2), these data permit refined interpretation of MAP, paleodiet, and paleoecology of ecosystems dominated by C3 plants, either prior to 7-8 million years ago (Ma), or more recently at mid- to high latitudes. Twenty-nine published paleontological studies suggest preservational or scientific bias toward dry ecosystems, although wet ecosystems are also represented. Unambiguous isotopic evidence for C4 plants is lacking prior to 7-8 Ma, and hominid ecosystems at 4.4 Ma show no isotopic evidence for dense forests. Consideration of global plant biomass indicates that average δ(13)C of C3 plants is commonly overestimated by approximately 2‰.
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            Effects of diet, climate and physiology on nitrogen isotope abundances in terrestrial foodwebs

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              The 15N natural abundance (δ15N) of ecosystem samples reflects measures of water availability

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                Author and article information

                Journal
                Quaternary Science Reviews
                Quaternary Science Reviews
                Elsevier BV
                02773791
                June 2016
                June 2016
                : 142
                :
                : 173-178
                Article
                10.1016/j.quascirev.2016.05.017
                1962ab54-6ac8-4d5c-b938-74f0b9d59e32
                © 2016
                History

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