1. Chapter 6 Humans In The Biosphere
Section 6-3
Biodiversity

6. The Value of Biodiversity
Diversity = Variety
Ecosystems Diversity
Species Diversity
Genetic Diversity

7. The Value of Biodiversity
Key Concept
Biodiversity is one of Earth’s greatest natural resources. Species of many kinds have provided us with foods, industrial products, and medicines.

9. Threats to Biodiversity
Key Concept:
Human activity can reduce biodiversity by altering habitats, hunting species to extinction, introducing toxic compounds into food webs, and introducing foreign species into new environments.

11. Habitat Alteration & Fragmentation
Creates Biological Islands
Costa Rica Rainforest Project

12. Demand For Wildlife Products
Convention on International Trade in Endangered Species

13. Demand For Wildlife Products
Body Parts
Fur, horns, gall bladders, feathers, etc.

15. Pollution Biological Magnification
Toxic chemicals concentrate in tissues and are passed up the food chain.
Higher concentrations accumulate at each level until the animal is toxic to itself, or any organism that eats it.
DDT

16. Invasive Species Zebra Mussel Leafy Spurge Nutrias Kudzu Varroa Mites
Dutch Elm Disease

17. Invasive Species Zebra Mussel Leafy Spurge Nutrias Kudzu Varroa Mites
Dutch Elm Disease

18. Invasive Species Zebra Mussel Leafy Spurge Nutrias Kudzu Varroa Mites
Dutch Elm Disease

19. Invasive Species Zebra Mussel Leafy Spurge Nutrias Kudzu Varroa Mites
Dutch Elm Disease

20. Conserving Biodiversity
Key Concept:
Conservation efforts focus on protecting entire ecosystems as well as single species
National Parks
Marine Sanctuaries
Tropical Megareserves