Ross,
Another paper that might be of use:
Tieszen, L. L. & Bingyu, S. 1990. Stable carbon isotopic variation among
plants of the Inner Mongolian grasslands. In Y. Ba and P. Keli (Eds.),
Reports from the Inner Mongolia Grassland Ecosystem Research Station of
Academia Sinica (1979 - 1988). Beijing, Science Press. Pp: 273-287.

It compares root/base/stem/young leaf/mature leaf/dead leaf/inflorescence
for each of 4 species of C3 grasses.

It's quite difficult to get hold of.  Let me know if you have problems &
I'll see if I can scan my own copy for you.

Mandy Jay

Current address:
Max Planck Institute for Evolutionary Anthropology
Dept. of Human Evolution
04103 Leipzig
Germany

On Tue, 30 May 2006 13:09:54 -0400, Ross Secord <[log in to unmask]> wrote:

>Does anyone know of a study that looks at differences (or lack there of)
>between d13C in fruit and leaves across a diversity of C3 plant species?
>
>Thanks in advance,
>Ross
>**************************************************
>Ross Secord, Ph.D.
>Museum of Paleontology
>1109 Geddes Avenue
>The University of Michigan
>Ann Arbor, MI 48109-1079
>=========================================================================