Phenological observations throughout time and space:

Robert S. Marsham Observer from 1736-1798, England (Courtesy of Tim Sparks, CEH Monks Wood)	Unknown Picturing the Japanese Cherry Tree Flowering Festival, Spring 2003 (Picture Andri Pol, Tagesanzeiger)	Christian Röthlisberger Observer since 1977 at Grossaffoltern BE/Switzerland (Picture Adrian Moser, Der Bund)

European Plant Phenology. A special issue from Climate Research.
Rutishauser, T., C. Schleip, T. Sparks, Ø. Nordli, A. Menzel, H. Wanner, F. Jeanneret and J. Luterbacher (2009): The Temperature Sensitivity of Swiss and British Plant Phenology 1753–1958. Climate Research 39, 179-190.
[link] [pdf] [link special issue]

Demarée, G. and T. Rutishauser (2009): Origins of the word "phenology". Eos Transactions of the American Geophysical Union 90, 291.
[link] [link supplement] [reprint]

Peñuelas, J., T. Rutishauser, I. Filella (2009): Phenology Feedbacks on Climate Change. Science 324, 887–888.
A longer growing season as a result of climate change will in turn affect climate through biogeochemical and biophysical effects.
[link] [reprint]

Rutishauser, This (2009): Historical Phenology in Central Europe. Seasonality and Climate During the Past 500 Years, Geographica Bernensia, Vol. G 82, pp. 152.
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