Notice
EN-7. Records of the biodiversity crisis
- document 1 document 2 document 3
- niveau 1 niveau 2 niveau 3
Descriptif
Bruno David comes back to the main biodiversity crisis. He focuses on 2 aspects : the crisis recording and the exit from the crisis. Firstly, he explains that, contrary to what can be supposed, there are only a little fossils in times of crisis. Secondly, he points out the variability of the healing duration.
Dans la même collection
-
EN-11. Nature and progress
GOUYON Pierre-Henri
Pierre-Henri Gouyon relies on an example - Dedale - to show the effects and the risks of a progress understanding which is only based on the technology.
-
EN-2. Biodiversity: state or dynamics ?
GOUYON Pierre-Henri
Pierre-Henri Gouyon proposes a definition of the biodiversity. He relies on the diagram that Darwin published in 1859, in The Origin of Species. He insists on the dynamic balances of this biodiversity
-
EN-1. Definition of biodiversity
BOEUF Gilles
Gilles Boeuf proposes a definition of the biodiversity, this "living fraction of the nature in all its complexity". He relies on many examples, pictures, samples, and always points out the strong
-
EN-10. Why should we worry about biodiversity ?
BOEUF Gilles
In relation to the erosion of biodiversity, Gilles Boeuf presents arguments in favor of the upholding of this biodiversity: human health, technology innovation, bio-inspiration, or economy.
-
EN-4. Origins of life
MAUREL Marie-Christine
Marie-Christine Maurel comes back to the formation of the first living cells on the earth surface, relying on several great experiments. The she presents the extent of questionings which still remain,
-
EN-8. Current state of the planet and of the biodiversity
BOEUF Gilles
Gilles Boeuf reports the erosion of biodiversity and presents the four main factors which can be associated to this dynamics: destruction and pollution, resources overexploitation, species
-
EN-5. The history of biodiversity
BOEUF Gilles
Gilles Boeuf comes back to the main stages of the history of life. He begins with the oceans, where life appeared over 3,5 billion years ago, mentions the lands conquest, and ends with the appearance
-
Definition and lesson learned from the past crisis
BOEUF Gilles
In this first part, discover what are the biodiversity, its origins 3,8 billion years ago, and its evolution mechanisms, especially the extinction crisis of the main species. You will better
-
EN-9. Biodiversity: perception and uses
GOUYON Pierre-Henri
Pierre-Henri Gouyon comes back to different looks taken at nature and biodiversity during the last centuries. He insists on the fact that this biodiversity can't be reduced to a frozen group of
-
EN-3. Origins of life: the context
MAUREL Marie-Christine
Marie-Christine Maurel explores the origins of life on earth. She highlights the main conditions 3 billion years ago, as well as the emergence of the first forms of life, which gave birth to the tree
-
EN-6. The main crisis of biodiversity
DAVID Bruno
Bruno David comes back to the main biodiversity crisis. He takes an inventory of the crisis for hundreds of million years and he discusses their potential factors of origin : oxygenation of the marine
-
3. Origines de la vie : le contexte
MAUREL Marie-Christine
Marie-Christine Maurel explore les origines de la vie sur terre. Elle met en évidence les conditions qui prévalaient il y a plus de 3 milliards d'années, ainsi que l'émergence des premières formes de
Avec les mêmes intervenants et intervenantes
-
L'océan : un terrain connu ?
DAVID Bruno
Bruno David, ancien Président du Muséum national d'Histoire naturelle, discute dans cette vidéo de l'état de nos connaissances par rapport à l'océan.
-
EN-6. The main crisis of biodiversity
DAVID Bruno
Bruno David comes back to the main biodiversity crisis. He takes an inventory of the crisis for hundreds of million years and he discusses their potential factors of origin : oxygenation of the marine
-
6. Les grandes crises de la biodiversité
DAVID Bruno
Bruno David revient sur les grandes crises d'extinction de la biodiversité. Il en fait l'inventaire depuis plusieurs centaines de millions d'années et il discute des facteurs qui peuvent en être à l
-
7. Enregistrement des crises de la biodiversité
DAVID Bruno
Bruno David revient sur les grandes crises d'extinction de la biodiversité. Il se focalise sur deux aspects : d'une part l'enregistrement de ces crises en montrant que contrairement à ce que l'on peut
