Peñuelas & Estiarte (1999)
Also: Peñuelas & Estiarte 1999
Can elevated CO2 affect secondary metabolism and ecosystem function?
Peñuelas, J., & Estiarte, M. (1998). Can elevated CO2 affect secondary metabolism and ecosystem function?. Trends in Ecology & Evolution, 13(1), 20-24. Link to paper
DOI:https://doi.org/10.1016/S0169-5347(97)01235-4
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.