Loss of Biodiversity Leonarda Elsgolts 1 pa

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Loss of Biodiversity Leonarda Elsgolts, 1 pa

Biodiversity is the variety of plant and animal species present in the natural environment.

Extincts: >99%

Convention on Biological Diversity Rio de Janeiro, 1992

Types of biodiversity 1. Species diversity • Animalia • Bacteria • Fungi • Protozoa • Archaea • Chromista • Plantae • Viruses 2. Genetic diversity

3. Ecosystem diversity • • Coastal environments Water environments Mountain environments Savannas Deserts Tropical forests Temperate forests

Biodiversity Loss & Species Extinction

May become extinct in the near future: • • • 25% of all mammals 11% of all identified birds 30% of all known fish 20% of reptiles 25% of amphibians

Causes of the loss of biodiversity: • Loss of the habitats • Introductions of Invasive Alien Species • Pollution • Climate change • Human overpopulation • Overexploitation of resources

Protected areas: • National parks • Wildlife sanctuary • Forest reserves • Zoological parks • Botanical gardens

Facts: • Since 2000, 6 million hectares of primary forest have been lost each year. • 35% of mangroves have been lost in just 20 years. • 70% of coral reefs are threatened or destroyed.

Thank you for your attention!

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