"Red Books" list of endangered animals

The red book had its beginnings to the mid-sixties to draw attention to the species that are endangered .. Since then the criteria to define whether a species is threatened have gone through a process of progressive refinement to reach those in effect since the mid-nineties. In its modern form the red books assess the degree of threat of extinction found in different species and proposed conservation measures. The establishment of new criteria and categories by IUCN in 2001 with a quantitative emphasis to reduce the degree of subjectivity in the classification of species has been a very important tool for a new generation of red books worldwide. These criteria made ​​clear need to update the information to the wildlife that was listed as threatened in país.Las lists presented are preliminary, produced in 1998 and since then under review for more than a hundred researchers linked making process of the red books. The categorization was based on the methodology proposed by IUCN 1994, however applied to national knowledge ignoring the global. The Humboldt Institute would like to acknowledge the work done by the authors of the lists, as these have become the basis of the work of the red books.