Download Creative Conservation: Interactive management of wild and by C. D. Magin, T. H. Johnson, B. Groombridge, M. Jenkins, H. PDF
By C. D. Magin, T. H. Johnson, B. Groombridge, M. Jenkins, H. Smith (auth.), P. J. S. Olney, G. M. Mace, A. T. C. Feistner (eds.)
Past growth and destiny demanding situations R.J. Wheater Royal Zoological Society of Scotland, Edinburgh, united kingdom. long ago twenty years a lot has been completed within the sphere of breeding endangered species, and we must always be happy that our co operative efforts have already borne loads fruit. notwithstanding, on stability and regardless of the simplest efforts of conservationists, the placement of natural world within the wild locations the place they're top conserved has go to pot, usually dramatically worse. sooner than returning to the uk in 1972, i used to be in Uganda for sixteen years, such a lot of which period used to be spent as leader Warden of Murchison Falls nationwide Park. Our major challenge used to be that an over-population of huge mammals used to be having a devastating effect at the habitat. Devas tation was once being wrought on forest components by way of the coming of huge numbers of elephants into the sanctuary of the Park, following adjustments in land use within the parts open air the Park. those alterations have been in keeping with the necessities of an ever-expanding human population.
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Additional resources for Creative Conservation: Interactive management of wild and captive animals
4 Analysis of threatened species held in captivity Institutions which reported their specimen numbers to the International Zoo Yearbook (Olney and Ellis, 1991), which maintains the most complete global record available, collectively held approximately 1 232000 vertebrate specimens as of 31 December 1989. Nearly half (584000) of these were fish. The numbers of other taxonomic groupings held were mammals (202000 specimens), birds (351000), reptiles (74000) and amphibians (21000). However, only a small percentage of these specimens actually contribute to the ex situ conservation of biological diversity, since surprisingly few threatened species are held.
119-22. V. C. A. Sayer), Chapman & Hall, London, pp. 55-73. C. L. (1990) Distribution and Taxonomy of Birds of the World, Yale University Press, New Haven, USA. WCMC (World Conservation Monitoring Centre) (1992) Global Biodiversity: Status of the Earth's Living Resources, Chapman & Hall, London. Wheeler, Q. (1990) Insect diversity and cladistic constraints. Annals of the Entomological Society of America, 83, 1031. O. (1989) Threats to biodiversity. Scientific American, 261 (3), 108-16. M. A. Dietz World Wildlife Fund-US, Washington, DC, USA and E.
The Red List has been compiled since 1986 by the World Conservation Monitoring Centre. Each taxon included is assigned to one of eight threat categories determined by a review of its conservation status throughout its range. Key factors examined include changes in distribution or numbers, degree and type of threat, and population biology. In the following analysis and discussion, the term 'threatened' includes taxa listed as Insufficiently Known (K) which are suspected but not definitely known to be threatened.