Seamounts are topographic rises of the seabed with a limited extent across the summit. There is evidence that seamounts form hotspots of biological activity in the oceans. Why seamounts host abundant populations of fish and other pelagic and aquatic predators is still uncertain.
This report contains the most comprehensive assessment of the status and trends of the world's invertebrates conducted to date. It introduces the staggering diversity of invertebrates, ranging from microscopic zooplankton to giant squid. Together these organisms represent around 80% of the known species on our planet.
Dans ce volume, vous trouverez les informations les plus récentes sur la distribution des espèces confrontées à un risque dextinction élevé dans certains des écosystèmes les plus importants du monde, et sur les raisons de ce déclin. Cet ouvrage apporte de nouvelles informations sur les espèces marines et deau douce qui offrent des services importants, y compris lapport de protéines à certaines des communautés les plus pauvres du monde.
Wildlife in a Changing World presents an analysis of the 2008 IUCN Red List of Threatened Species. Beginning with an explanation of the IUCN Red List as a key conservation tool, it goes on to discuss the state of the worlds species and provides the latest information on the patterns of species facing extinction in some of the most important ecosystems in the world, highlighting the reasons behind their declining status.
This report has been produced by ZSL in collaboration with WWF, IUCN and SSC. It considers for the first time the current status and trends of global vertebrates in the context of human pressures, with a particular focus on threatened, novel and evolutionary distinct species.
