Secondly, plant community changes in the catchment (or other ecological changes) may influence the dD record. Vegetation changes could reasonably have an influence on the mean catchment ewax/precip that lasts for decades, so this mecha- nism might operate too slowly to explain sample-to-sample vari- ability in the sediment, although it may contribute to the multi- decadal variability. We observed abundance variation in homo- logues downcore (Fig. 5), which could be consistent with ecological changes influencing dD values; however, the non-unique chain length distributions of different plant species (Bush and McIner- ney, 2013) make it impossible to draw unique solutions here.

Needs entry for isotopeInterpretation1_name (GF)

Of all the homologues presented in this study, C28 is used for paleoclimate interpretation: "Of all the homologues (Fig. 7a), C26 and C28 showed the most coherent and reliable evidence for terrigenous vegetation sources downcore, and we relied on C28 for paleoclimate reconstruction as before (Feakins et al., 2012)."

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