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Using data for 25,780 species categorized on the International Union for Conservation of Nature Red List, we present an assessment of the status of the world's vertebrates. One-fifth of species are classified as Threatened, and we show that this figure is increasing: On average, 52 species of mammals, birds, and amphibians move one category closer to(More)
Vascular plants are often considered to be among the better known large groups of organisms, but gaps in the available baseline data are extensive, and recent estimates of total known (described) seed plant species range from 200000 to 422000. Of these, global assessments of conservation status using International Union for the Conservation of Nature (IUCN)(More)
Plants provide fundamental support systems for life on Earth and are the basis for all terrestrial ecosystems; a decline in plant diversity will be detrimental to all other groups of organisms including humans. Decline in plant diversity has been hard to quantify, due to the huge numbers of known and yet to be discovered species and the lack of an adequate(More)
  • позвонков методом, транспедикулярной фиксации, A. O. Farjon
  • 2006
O Ob bj je ec ct ti iv ve e.. To analyse results of surgical teratment of lower tho-racic and lumbar spine injuries with transpedicular fixation alone and in combination with other types of stabilization. M Ma at te er ri ia al l a an nd d M Me et th ho od ds s.. A total of 90 patients with fractures of the spine were operated on with the help of(More)
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