Corrigendum to Hussey et al. (⁾

The authors provide corrections for two equation errors, one in the main manuscript text and one in Supplementary Material File S4 of Hussey et al. (2014). A spelling mistake in one of the figure axes is also corrected. The errors are as follows:

1. Within the main manuscript (page 241; bottom of text column two), the following equation to calculate trophic position (TP) using a scaled Δ¹⁵N framework based on a dietary δ¹⁵N value‐dependent Δ¹⁵N model was presented;

$$TP=\frac{\text{log}({\mathit{\delta }}^{15}{N}_{\lim }-{\mathit{\delta }}^{15}{N}_{base})-\text{log}({\mathit{\delta }}^{15}{N}_{\lim }-{\mathit{\delta }}^{15}{N}_{TP})}{k}$$

The TP of the baseline organism was omitted from this equation and must be added to obtain an absolute TP value for the organism of interest. The corrected equation is consequently;

$$TP=\frac{\text{log}({\mathit{\delta }}^{15}{N}_{\lim }-{\mathit{\delta }}^{15}{N}_{base})-\text{log}({\mathit{\delta }}^{15}{N}_{\lim }-{\mathit{\delta }}^{15}{N}_{TP})}{k}+T{P}_{base}$$

where TP_base is the trophic position of the consumer used to define δ¹⁵N_base (i.e. TP = 2 or 3).

2. In the supplementary material file titled, ‘ele12226‐sup‐0004‐SupplementaryMaterialS4’, equation (S3) was written as follows which is incorrect;

$$k=\frac{-\log ({\mathit{\beta }}_0-{\mathit{\delta }}^{15}{\mathrm{N}}_{\lim })}{-{\mathit{\delta }}^{15}{\mathrm{N}}_{\lim }}$$

The above equation has now been corrected to;

$$k=-\log \left(\frac{{\mathit{\beta }}_0-{\mathit{\delta }}^{15}{\mathrm{N}}_{\lim }}{-{\mathit{\delta }}^{15}{\mathrm{N}}_{\lim }}\right)$$

following the same equation presented in the manuscript text (page 242; top of text column one).

In addition, the equations in Supplementary Material File S4 have been reordered; the above equation is now listed as (S4). The corrected Supplementary Material File S4 has been provided as the online Supporting Information of this corrigendum (entitled ‘ele_12270‐sup‐0001‐SupplementaryMaterialS4 CORRECTED’)

3. In Figure 6, a spelling mistake in the x‐axis legends of (a), (c), (e) and (g) reads ‘basline organism’ and should be corrected to ‘baseline organism’.

Supporting information

 

Ecology Letters (2014) 17: 768–768