Tim-
Here are a few more references which might be interesting. But nobody that I
know of has every really done a careful comparison of D/H in freshwater
aquatic vs. terrestrial plants. There is also more information available on
marine plants. . .

Estep, M.F. and Hoering, T.C. (1980) Biogeochemistry of the stable hydrogen
isotopes. Geochimica et Cosmochimica Acta 44, 1197-1206.

Sternberg, L.d.S.L. (1988) D/H ratios of environmental water recorded by D/H
ratios of plant lipids. Nature 333, 59-61.

Stiller, M. and Nissenbaum, A. (1980) Variations of stable hydrogen isotopes
in plankton from a freshwater lake. Geochimica et Cosmochimica Acta 44,
1099-1101.


Alex

________________________________
Alex Sessions
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Woods Hole Oceanographic Institute
Woods Hole, MA 02346

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phone: (508) 289-2570
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> -----Original Message-----
> From: Stable Isotope Geochemistry [mailto:[log in to unmask]]On
> Behalf Of Tim Heaton
> Sent: Thursday, September 30, 1999 11:23 AM
> To: [log in to unmask]
> Subject: D/H ratios of aquatic versus land plants
>
>
> Dear listmembers
>
> Does anyone know of studies which have looked at the hydrogen isotope
> composition of freshwater aquatic plants, compared with terrestrial
> plants? I'm referring to the organically-bound H, not the water.
>
> Thanks for any help.
>
> Tim Heaton
>
> NERC Isotope Geosciences Laboratory
> British Geological Survey
> Keyworth, Nottingham NG12 5GG, England
>
> Tel. +44(0)115 936 3401
> Fax +44(0)115 936 3302
> E-mail: [log in to unmask]
>