Currano et al. (2008)
Also: Currano et al. 2008
Sharply increased insect herbivory during the Paleocene–Eocene Thermal Maximum
Currano et al. (2008). Sharply increased insect herbivory during the Paleocene-Eocene Thermal Maximum. PNAS. 105. 1960-1964. Link to article.
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.