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Additional supporting information can be found in the online version of this article:

FilenameFormatSizeDescription
jqs2614-sm-0001-SupTable-S1.pdf23K

Table S1. Stable isotope data for plant taxa and plant parts (including forbs) and the environmental context of each specimin.

jqs2614-sm-0002-SupTable-S2.pdf20K

Table S2. Seasonally distinct regression models evaluating species and climate effects on the isotope composition of C3 trees and C4 grass (see Table 1 of the main text).

jqs2614-sm-0003-SupTable-S3.pdf17K

Table S3. Regression models evaluating relationships between C3 forb isotope composition with nutritional composition (%N, and C/N ratio), and with local climate regime across sampling sites, habitats, seasons and years.

jqs2614-sm-0004-SupTable-S4.txt260K

Table S4. Relationships between δ13C and δ15N values of herbivore faeces with regional and monthly rainfall trends in Kruger Park.

jqs2614-sm-0005-SupFig-S1.pdf102K

Fig. S1. Effects of habitat type, season, total seasonal rainfall (mm), and mean seasonal temperature (average of daily maximum °C for the season), and %N of foliage on stable carbon (a–d) and nitrogen (e–h) isotope composition of C3 forbs.

jqs2614-sm-0006-SupFig-S2.pdf119K

Fig. S2. Relationships between the stable carbon isotope composition of C3 plants with rainfall (mean annual precipitation, MAP) from two published global databases (a and b from Diefendorf et al., 2010; c from Kohn, 2010).

jqs2614-sm-0007-SupFig-S3.pdf23K

Fig. S3. Comparison of stable carbon and nitrogen isotope compositions across different organs of the same individual plants.

jqs2614-sm-0008-SupApp-S1.pdf19K

Appendix S1. Linking rainfall with isotope composition of herbivore faeces.

jqs2614-sm-0009-SupApp-S2.pdf17K

Appendix S2. Isotope comparisons across plant parts.

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