Caribou calving and growing seasons in Greenland, from E. Post and M. C. Forchhammer, 2008.

Complex responses to Arctic climate change that may have broader community and ecosystem consequences. A developing trophic mismatch between the timing of caribou calving (blue), which has not changed, and the timing of plant growth (red), which is advancing with warming in Greenland [updated from E. Post, M. C. Forchhammer, Philos. Trans. R. Soc. B 363, 2369 (2008)].

Eric Post, et al., Ecological Dynamics Across the Arctic Associated with Recent Climate Change [subscription required], Science, 11 September 2009: Vol. 325. no. 5946, pp. 1355 – 1358 DOI: 10.1126/science.1173113