Precambrian-Cambrian trace fossils from Eastern Yunnan, China: implications for Cambrian explosion. Bulletin of the National Museum of Natural Science Comptes Rendus Palevol – Vol. 8 – N° – p. – L’Explosion cambrienne ou l’émergence des écosystèmes modernes – EM|consulte. An evolutionary burst million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally.
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Marine ecosystems with complex trophic structure and dominated by animals started to build up in the Early Cambrian. Swimmers are numerous, but there is no evidence for ecplosion extensive occupation of the water column by the Early Cambrian.
Cambrian explosion – Wikipedia
On the contrary, animal life may have concentrated in hyperbenthic environments, close to the sea bottom. This would have been the initial step towards the colonization of the whole pelagic realm and the building-up of pelagic food chains. A explision of biotic innovations and events seems to have catalyzed both the animal diversification and the build-up of a completely new type of ecosytem, with: The role of environmental factors e.
Close resemblances between the trophic structure of present-day ecosystems and that of Cambrian ones are confirmed by fossil data and recent mathematical models. This unprecedented increase of interdependence between animal species and trophic levels probably increased the general stability of explozion ecosystems, but made them for the first time in their history, highly vulnerable to environmental perturbations.
This will largely influence the post-Cambrian evolution of the marine world. Journal page Archives Contents list. Access to the text HTML.
L’Explosion cambrienne ou l’émergence des écosystèmes modernes – EM|consulte
Access to the PDF text. Access to the full text of this article requires a subscription. If you are a subscriber, please sign in ‘My Account’ at the top right of the screen. If you want to subscribe to this journal, exploison our rates You can purchase this item in Pay Per View: Outline Masquer le plan. Biodiversity of marine life in the Early Cambrian exemplified by the Chengjiang fauna.
Early Cambrian marine ecospace: The Cambrian ecological turnover and its triggers. Top of the page – Article Outline. Cambrienn Help Who are we? As per the Law relating to information storage and personal integrity, you have the right to oppose art 26 of that lawaccess art 34 of that law and rectify art 36 of that law your personal data.
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