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Environment Book Summary Presented B Aartee Mishra
Animal diversity in india (Part-1)
Animal diversity in India THE RED DATA BOOK Species which are considered threatened are listed by various organisations including some private organisations, likewise, Red Data Book is published by the International Union for Conservation of Nature and Natural resources (IUCN) and provides information on research, studies and also helps in monitoring the program on rare and threatened species. e ED IUCN .Red Data Book was first issued in 1966, and it is continually updated by IUCN which is based on Morges, Switzerland
Red in the name of the book is symbolic of danger which is experienced by the plants and animals across the globe It contains Red, Pink and Green Pages. Red signifies the danger. Pink pages in the Red Data Book signify Critically Endangered Species. Green Pages show those species which were previously endangered but now has recovered to such a level that they are no longer threatened/ endangered and over the period of time the no. of green pages has kept on decreasing, while Pink Pages have kept on increasing. . . IUCN focuses on the re-evaluation of every species every 5 years if possible, or at least every 10 years and this is done in peer-reviewed (evaluation of work by one or more people of similar competence) manner through IUCN Species Survival Commission (SSC) Specialist Groups.
Extinct (EX) - No known individuals remaining. Extinct in the wild (EW) Known only to survive in captivity, or as a naturalized population outside its historic range. Critically endangered (CR) - Extremely high risk of extinction in the wild. Criteria reduction in population (> 90% over the last 10 years), population size (number less than 50 mature individuals), quantitative analysis showing the probability of extinction in wild in at least 50% in their 10 years) and it is therefore considered to be facing an extremely high risk of extinction in the wild. Endangered (EN) - High risk of extinction in the wild. . Vulnerable (VU) - High risk of endangerment in the wild.
.Near threatened (NT) - Likely to become endangered in the near future. . Least concern (LC) - Lowest risk. Does not qualify for a more at-risk category. Widespread and abundant taxa are included in this category. . Data deficient (DD) - Not enough data to make an assessment of its risk of extinction. Not evaluated (NE) Has not yet been evaluated against the criteria. Pygmy Hog (Porcula salvania) Is the world's smallest wild pig. This species constructs a nest throughout the year. It is one of the most useful indicators of the management status of grassland habitats
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