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Biodiversity: Who cares?

Biodiversity: Who cares?. Which do you like better?. B. A. Which do you like better?. B. A. B. A. Which do you like better?. B. A. Which do you like better?. Which do you like better?. A. B. Which do you like better?. A. B. Which do you like better?. B. A.

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Biodiversity: Who cares?

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  1. Biodiversity:Who cares?

  2. Which do you like better? B A

  3. Which do you like better? B A

  4. B A Which do you like better?

  5. B A Which do you like better?

  6. Which do you like better? A B

  7. Which do you like better? A B

  8. Which do you like better? B A

  9. What do you think biodiversity means?

  10. Biodiversity What does “Bio” mean? Life Bio =

  11. Biodiversity What does “Diversity” mean? Diversity = Variety

  12. What is biodiversity? Biodiversity is the variation of life within a given ecosystem, biome, or for the entire Earth.

  13. How diverse is planet Earth? Currently about 1.6 million species are known,

  14. …this is thought to be a serious underestimate of the total number of species.

  15. Insects make up the vast majority of animal species and…….

  16. there are estimates of possibly 10-30 million undiscovered species in the depths of the ocean and….

  17. deepness of the jungles.

  18. There are 3 components of biodiversity • Diversity of genesYorkies, schnauzers, and bichons are all dogs—but they're not the same because their genes are different. Schnauzer Yorkie Bichon

  19. Diversity of speciesFor example, monkeys, dragonflies, and dandilions are all different species. Saki Monkey Golden Skimmer Dandilions

  20. Variety of ecosystemsPrairies, tundras, and deserts are all ecosystems. Each one is different, with its own set of species living in it. Prairie Tundra Desert

  21. Value of Biodiversity Biodiversity has both economic value….

  22. and ecological value within an ecosystem

  23. Economic Value Many plants, animals, and other organisms are economically valuable for humans. In addition to providing people with food,. . .

  24. …..these organisms supply raw materials for clothing, medicine and other products

  25. Coconut Oil Jute Paper Mint

  26. The ecosystem in which organisms live are of economical valuable, too..

  27. Many companies run wildlife tours in rain forests, savannas, and other locations

  28. Ecological Value All species in an ecosystem are connected to one another.

  29. A change that affects one species will eventually affect others.

  30. Some species play a particularly important role in their ecosystem. A keystone species is a species that influences the survival of many other species. Sea otters help control sea urchins populations

  31. A classis keystone species is a small predator that prevents a particular herbivore from eliminating a dominant plant species. PREDATOR Puget sound starfish HERBIVORE California mussels

  32. Some sea stars may perform this function by preying on mussels, and other shellfish that have no other natural predators.

  33. If the sea star is removed from the ecosystem, the mussel population explodes uncontrollably,

  34. driving out most other species, while the mussel population destroys coral reefs.

  35. Some keystone species are not predators but engineers

  36. The beaver transforms its territory from a stream to a pond or swamp.

  37. In the African savanna, the larger herbivores, especially the elephants, shape their environment.

  38. The elephants destroy trees, making room for the grass species.

  39. Without these animals, muchof the savannah would turn into woodland.

  40. Factors Affecting Biodiversity Biodiversity varies from place to place. Factors that affect biodiversity in an ecosystem include: area, climate , and diversity (variety) of niche.

  41. Area: Within an ecosystem, a large area will contain more species than a small area.

  42. For example, suppose you are counting tree species in a forest. You would find far more tree species in a 100 sq meterarea than in a 10 sq meter area.

  43. Climate: In general, the number of species increases from the poles towards the equator.

  44. Tropical rain forests make up only 7% of the Earth’s land area but……

  45. are home to more than 50%of the world’s species

  46. The reason for the great biodiversity in the tropics is not fully understood.

  47. Many scientist hypothesis that the fairly constant temperatures. . . . . .

  48. and large amounts of rainfall. . . .

  49. ….result in a continuous growing season for plants resulting in more food for animals.

  50. Niche Diversity: Coral reef make up less than 1% of the Earth’s oceans but ……

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