The problems of Biodiversity are very crucial for the world community. This book discusses the problems of Biodiversity in their international perspectives: The different rare and threatened categories being followed today have been used for the past over 30 years. Biologists and conservationists use the words such as "extinct", "endangered", "vulnerable", "critically endangered" and "extinct in the wild" across the world. To focus attention on the strategies for conservation the categories highlight those species under higher extinction risk. The categories apply well to the ecogeographic, photo/zoo geographic wild population inside their natural ranges and infrastructure taxa.
Threatened Species Categorization:
On an international level, the most widely used criteria are the Red Data Book Categories' of IUCN have a relatively subjective measure of the degree of threat to individual species. These are more widely applicable than the more fixed criteria (Synge, 1981). The categories typically apply to species and can apply to infraspecific taxa as well (Moulton and Sanderson, 1997). As per the threats operative on the taxa the species are scheduled and applicable to the act of Wildlife Preservation. The editor is grateful to various research agencies of America who have provided rich material and which has been used for the preparation of this book. I am particularly grateful to Mrs. Kiran Parnami, Raj Publishing House, Jaipur for her fullest co-operation in bringing out this book an a beautiful get-up.
Ashwani Negi
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