Abstract
D/H ratios of sedimentary leaf waxes can provide useful information about past climate change. However, factors controlling δD values of higher plant leaf waxes ( δD wax) are poorly understood. Here we show that δD wax values are negatively correlated with δ 13C values of leaf waxes ( δ 13C wax), based on a study of 35 leaf samples of 11 tree species around Blood Pond, Massachusetts (USA). Our data suggest that plant water use efficiency exerts an important control on the δD wax variation among tree species.
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