from Section 3 - Biogeography, migration and ecological niche modelling
Published online by Cambridge University Press: 16 May 2011
Abstract
Cyclamen is a genus of popular garden plant, protected by Convention on International Trade in Endangered Species (CITES) legislation. Many of its species are morphologically and phenologically adapted to the seasonal climate of the Mediterranean region. Most species occur in geographic isolation and will readily hybridise with their sister species when brought together. We investigate the biogeography of Cyclamen and assess the impact of palaeogeography and palaeoclimate change on the distribution of the genus. We use techniques of phyloclimatic modelling (combining ecological niche modelling and phylogenetic character optimisation) to investigate the heritability of climatic preference and to reconstruct ancestral niches. Conventional and phyloclimatic approaches to biogeography are compared to provide an insight into the historic distribution of Cyclamen species and the potential impact of climate change on their future distribution. The predicted climate changes over the next century could see a northward shift of many species' climatic niches to places outside their current ranges. However, such distribution changes are unlikely to occur through natural ant-based dispersal, so conservation measures are likely to be required.
Introduction
Cyclamen: present-day status and distribution
Cyclamen L. is a genus of c. 20 species in the family Myrsinaceae. Its species are perennial herbs, having distinctive flowers with reflexed petals, that are often scented, and winter blooming. These characteristics make Cyclamen a popular garden plant. Its popularity has prompted many studies on the group, including cytology (Bennett and Grimshaw, 1991; Anderberg, 1994), hybridisation (Gielly et al., 2001; Grey-Wilson, 2003) and phenology (Debussche et al., 2004).
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