Biodiversity

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What is Biodiversity? Why is it important?

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Biodiversity

  1. 1. What is Biodiversity?What is Biodiversity?Why is it important?Why is it important?Mrs. NeistadtMrs. Neistadt
  2. 2. A BWhich do you like better?Which do you like better?
  3. 3. A BWhich do you like better?Which do you like better?
  4. 4. What do you think biodiversityWhat do you think biodiversitymeans?means?
  5. 5. Bio =BioBiodiversitydiversityWhat does “Bio” mean?
  6. 6. BioBiodiversitydiversityDiversity = VarietyWhat does “Diversity” mean?
  7. 7. *Biodiversity*Biodiversity is the variety of life in anis the variety of life in anarea that is determined by the numberarea that is determined by the numberof different species in that area.of different species in that area.*Biodiversity increases the stability of*Biodiversity increases the stability ofan ecosystem and contributes to thean ecosystem and contributes to thehealth of the biosphere.health of the biosphere.
  8. 8. *There are 3 components of*There are 3 components ofbiodiversity:biodiversity:
  9. 9. 1.1. *Genetic Diversity*Genetic Diversity- the variety of- the variety ofgenes or inheritable characteristicsgenes or inheritable characteristicspresent in a populationpresent in a populationChihuahuas, beagles, and Rottweilers are all dogs—Chihuahuas, beagles, and Rottweilers are all dogs—but theyre not the same because their genes arebut theyre not the same because their genes aredifferent.different.ChihuahuaChihuahua BeagleBeagleRottweilersRottweilersGenetic DiversityGenetic Diversity
  10. 10. 2. *2. *Species DiversitySpecies Diversity- the number of- the number ofdifferent species and the relativedifferent species and the relativeabundance of each species in aabundance of each species in abiological community.biological community.For example, monkeys, dragonflies, and meadowFor example, monkeys, dragonflies, and meadowbeauties are all different species in the same community.beauties are all different species in the same community.Saki Monkey Golden Skimmer Meadow BeautySpecies DiversitySpecies Diversity
  11. 11. 3. *3. *Ecosystem DiversityEcosystem Diversity- the variety of- the variety ofecosystems that are present in the biosphere.ecosystems that are present in the biosphere.Prairies, Ponds, and tropical rain forests are all ecosystems.Prairies, Ponds, and tropical rain forests are all ecosystems.Each one is different, with its own set of species living in it.Each one is different, with its own set of species living in it.Paines PrairieHoh Rain ForestFlorida Sand hill PondEcosystem DiversityEcosystem Diversity
  12. 12. Which is more diverse?Which is more diverse?A B
  13. 13. Which is more diverse?Which is more diverse?A B
  14. 14. Which is more diverse?Which is more diverse?A B
  15. 15. A BWhich is more diverse?Which is more diverse?
  16. 16. Which has more biodiversity?Which has more biodiversity?A B
  17. 17. Which has more biodiversity?Which has more biodiversity?A B
  18. 18. The Importance of Biodiversity*Aesthetic and Scientific Value: The value of beautyand scientific discovery cannot be measured, but areextremely important to life on Earth.*Direct Economic Value: Maintaining biodiversityhas a direct economic value to humans. Humansdepend on plants and animals for food, clothing,energy, medicine and shelter.
  19. 19. The Importance of Biodiversity*Indirect Economic Value: a healthy biosphereprovides many services to humans and otherorganisms that live on Earth.Examples:•Green plants provide oxygen•Water cycle provides clean water
  20. 20. The Importance of BiodiversityYour Turn:Think of an environment you have been to, or livein. What different species of plants and animalshave you seen? How do they depend on eachother? What are some examples of geneticdiversity and species diversity in that environment?Write a paragraph that answers these questions.
  21. 21. Should we be concerned aboutShould we be concerned aboutbiodiversity?biodiversity?What we know:What we know:The Earth is losing species at an alarming rateThe Earth is losing species at an alarming rate In the past 500 years, we know of approximately 1,000 speciesthat have gone extinct
  22. 22. *Threats to biodiversity*Threats to biodiversity*Overexploitation*Overexploitation*Habitat Loss*Habitat Loss*Habitat Fragmentation*Habitat Fragmentation*Pollution*Pollution*Introduced Species*Introduced Species*Global Climate Change*Global Climate Change
  23. 23. Extinct SpeciesExtinct Species Extinct speciesExtinct species-- are plants or animals that onceare plants or animals that oncelived on Earth that have completelylived on Earth that have completelydisappeared.disappeared.The dodo (Raphus cucullatus) was a flightlessbird endemic to the Indian Ocean islandof Mauritius. It stood about a metre (3.3 feet) tall,weighing about 20 kilograms (44 lb).The dodo was first mentioned by Dutch sailors in1598. By 1681, all dodos had been killed byhungry sailors or their domesticated animals.The extinction of the bird, within 80 years of itsdiscovery, made people realise for the first timethat humans could induce the extinction of plantsand animals.--- …http://en.wikipedia.org/wiki/Dodo
  24. 24. Endangered SpeciesEndangered Species An Endangered Species-An Endangered Species- is a plant or animalis a plant or animalthat is in danger of becoming extinct.that is in danger of becoming extinct. http://www.fws.gov/endangered/http://www.fws.gov/endangered/ List of endangered speciesList of endangered species A Threatened Species- plants or animals thatA Threatened Species- plants or animals thatmay become endangered in the near futuremay become endangered in the near future

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