Summaries are provided on the conservation status of over 7,000 globally threatened tree species with the 1994 IUCN categories and criteria assigned. The conservation evaluations were carried out in association with members of the IUCN SSC Specialist Groups and a wide range of experts worldwide. The book concludes that 10 per cent of the world's trees are threatened with extinction and calls for a range of measures to reverse the trend of species loss
Found in a variety of forms and sometimes with very attractive flowers, cacti and other succulents have elicited widespread interest and tremendous popularity worldwide. Although the subject of a certain amount of debate, about 10,000 species of plant are recognised as belonging to the succulent group. Of these, an estimated 2,000 are threatened with global extinction in the wild and many more are regionally or nationally threatened. The main threats to the survival of cacti and succulent plants are habitat destruction and collection for international trade.
