Climate change has led to major changes in the phenology (the timing of seasonal activities, such as flowering) of orchids along with some other species. This result came after the analysis of dataset of the flora of Massachusetts where the informations on life spans of ≈150 years in species abundance and flowering time were observed. Species that do not respond to temperature have decreased greatly in abundance, and include orchids and others like anemones and buttercups, asters and campanulas, bluets, lilies, roses etc. Because flowering-time response traits are shared among closely related species, the findings suggest that climate change has affected and will likely continue to shape the phylogenetically biased pattern of species loss.

Detail of this information can be obtained from PNAS on November 4, 2008 vol. 105 no. 44 17029-17033.

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