Fig. 2.

(A) Relevance scores of cited references in two IPCC AR5 publications with a focus on ecological impacts of climate change (29, 30) and a random subset of the paleontological literature with a focus on climate change (from Web of Science; WoS). Scores of modern and paleo data are statistically not distinguishable, whereas the random subset is substantially lower (see text for statistics). (B) Percentages of IPCC AR5 and WoS paleontological publications, which score in the respective categories. For example, 42% of all paleontological publications cited by the IPCC provide direct relevance for the prediction of climate change impacts, whereas this relevance is only shown in 6% of the uncited random WoS subset.