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Comment
. 2018 Jun 26;115(26):E5847-E5848.
doi: 10.1073/pnas.1805120115. Epub 2018 Jun 13.

Reply to Pincheira-Donoso and Hodgson: Both the largest and smallest vertebrates have elevated extinction risk

William J Ripple  1 , Christopher Wolf  2 , Thomas M Newsome  2   3   4 , Michael Hoffmann  5 , Aaron J Wirsing  4 , Douglas J McCauley  6
Affiliations
Comment

Reply to Pincheira-Donoso and Hodgson: Both the largest and smallest vertebrates have elevated extinction risk

William J Ripple et al. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Fig. 1.
Fig. 1.
Estimated probability of being threatened versus body mass according to the original “All vertebrates” model given in Ripple et al. (2) and the “No amphibians” model, which is identical, except amphibians were removed from the dataset. In both cases, the model was a generalized linear mixed model with random intercepts based on taxonomic order and a segmented relationship with respect to mass (base 10 log-transformed). As before, all slope parameter terms were highly significant (P < 0.001). Removing amphibians from the dataset increased the pseudo-R2 from 0.317 to 0.323. These model results show that excluding amphibians from the dataset has little effect on our overall conclusions.
See this image and copyright information in PMC

Comment on

References

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    1. Ripple WJ, et al. Extinction risk is most acute for the world’s largest and smallest vertebrates. Proc Natl Acad Sci USA. 2017;114:10678–10683. - PMC - PubMed
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