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Chapitre 29

Biodiversité et conservation

Qu'est-ce que la météo ?
Qu'est-ce que la météo ?
Overview Weather refers to the current state of atmospheric conditions at a specific time and place. Weather is temporary and is influenced by the ...
Qu'est-ce que le climat ?
Qu'est-ce que le climat ?
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. ...
Changement climatique mondial
Changement climatique mondial
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global ...
Qu'est-ce que la biodiversité ?
Qu'est-ce que la biodiversité ?
Biodiversity describes the variety of living things at multiple organizational levels: genetic, species and ecosystem diversity. Species diversity ...
Menaces pour la biodiversité
Menaces pour la biodiversité
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species ...
Biodiversité et valeurs humaines
Biodiversité et valeurs humaines
Human civilization relies on biodiversity in many ways. Sudden changes in species biodiversity result in environmental changes that can modify weather ...
Qu'est-ce que la biologie de conservation ?
Qu'est-ce que la biologie de conservation ?
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the ...
Développement durable
Développement durable
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a ...
Conservation des petites populations
Conservation des petites populations
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens ...
Conservation des populations en déclin
Conservation des populations en déclin
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent ...
Fragmentation de l'habitat
Fragmentation de l'habitat
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land ...
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