. The Conservation Atlas of Tropical Forests: the Americas. Identifying Areas for Plant Conservation in the Americas collaborative project, partly funded by ODA and the EC. The results of the project will be published in late 1994, and will provide a global analysis of centres of plant diversity and endemism. indicating those areas which, if protected, would save the majority of wild plant species (WWF/IUCN. 1994). The CPD concept is related to that of the work by crop geneticists in selecting centres of origin and diversity of crop plants â the so-called Vavilov Centres of Crop Genetic Divers
. The Conservation Atlas of Tropical Forests: the Americas. Identifying Areas for Plant Conservation in the Americas collaborative project, partly funded by ODA and the EC. The results of the project will be published in late 1994, and will provide a global analysis of centres of plant diversity and endemism. indicating those areas which, if protected, would save the majority of wild plant species (WWF/IUCN. 1994). The CPD concept is related to that of the work by crop geneticists in selecting centres of origin and diversity of crop plants â the so-called Vavilov Centres of Crop Genetic Diversity (Hawkes, 1983) described above. However, the main criteria for selecting CPD sites are those of high plant species diversity and/or endemism, while habitat diversity and the pres- ence of important gene pools of plants are secondary criteria (see Box 2). A total of 232 sites worldwide meet CPD criteria and will receive detailed treatment in Data Sheets. Other areas of botani- cal importance, meeting the general criteria for selection as CPD sites, will be included in the CPD publications, but these other sites will not be treated in detail. In practice, most sites selected in the CPD project have in excess of 1000 vascular plant species, of which at least 10 per cent are endemic to the phytogeographic region in which the site occurs, and often a significant proportion of the total flora is endemic to the chosen site. The selection of CPD sites for Latin America buill upon ini- tiatives such as that of the Manaus workshop for the Amazonian region, and has involved the collaboration of numerous botanists, botanical institutions and conservation organizations throughout the region. The work of coordinating these efforts has been undertaken by Olga Herrera-MacBryde at the Smithsonian Institution for Middle and South America, and by Dennis Adams in London for the Caribbean region, as well as by Stephen Davis and Vernon Heyward in the lUCN Plant Conservation Office. For South Am
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