Biomas

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Biomas terrestres

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Biomas

  1. 1. BIOMES<br />
  2. 2. What is a biome?<br />major division of the ecological communities on Earth characterized by the plant and animal life of that region<br />
  3. 3. 1.- Freshwater<br />Water with low salt concentration<br />
  4. 4. Freshwaters are<br />Ponds and lakes<br />Streams and rivers<br />Wetlands<br />
  5. 5. Pond<br />Wetlands<br />lake<br />
  6. 6. 2.- Marine<br />Overfishing and pollution are serious problems<br />
  7. 7. Marine:<br />Oceans<br />Coral reef<br />Estuaries<br />
  8. 8. ocean<br />Coral reef<br />Estuaries<br />
  9. 9. Freshwater and marine are the most important<br />Biomes because water<br />Is the basis of life<br />People must be educated<br />About the consequences<br />Of our actions<br />
  10. 10. 3.- Forests<br />They are important because they are home to the most diverse biotic communities in the world<br />
  11. 11. Forest are in danger because of the explotation and burns<br />
  12. 12. 4.- Deserts<br />Rainfall is less than 50/cm year<br />
  13. 13. Sahara<br />Mexico<br />Hot and dry <br />Temperatures are very hot during the day and very cold in the night.<br />Australia<br />
  14. 14. 5.- Grasslands<br />Lands dominated by grasses <br />
  15. 15. Savanna is a grassland with some <br />Individual trees<br />Savannas are in warm and hot climates where the rain is concentrated in six or eight months of the year followed by a dry period.<br />
  16. 16. 6.- Tundra<br />It is the coldest of all the biomes, extremely low temperatures.<br />
  17. 17. There are a wide variety of plants that are able to resist the cold climate. There are about 1,700 kinds of plants in the arctic and subarctic<br />
  18. 18. Arctic tundra is located in the northern hemisphere, encircling the north pole. winter temperature is -34° C<br />Summer temperature: 3-12°<br />
  19. 19. Alpine tundra is located on mountains throughout the world at high altitude where trees cannot grow. The plants are very similar to those of the arctic ones.<br />
  20. 20. 7.- Taiga<br />The taiga is the largest biome in the world. It covers large parts of Canada, Europe, and Asia. This forest is covered with coniferous trees. In fact, sometimes the taiga is called a coniferous forest. <br />
  21. 21. What is the Weather Like in the Taiga?<br />In the taiga, summers are warm and rainy, and the winters are very cold. There is lots of snow in the forests too.<br />During the summer, it is usually around 21 º .In the winter it´s about 0º.<br />
  22. 22. Compare the rainfall in the taiga to the other biomes<br />
  23. 23. There is not much diversity in the taiga, because many plants cannot survive such hard conditions. <br />Lichens and mosses are important, but most of the plants are evergreen trees. The trees are narrow and grow very close together. This is so they can help protect each other from the weather. <br />
  24. 24. 8.- Mediterranean<br />It is found surrounding  large parts of the Mediterranean Sea. It is also called “Chaparral”<br />
  25. 25. The summers are very hot and dry.<br />The winters are relativily warm and rainy<br />
  26. 26. Can you indentify the biomes?<br />
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  40. 40. Biomes map<br />
  41. 41. Marine biome map<br />
  42. 42. Forests map<br />
  43. 43. Deserts map<br />
  44. 44. Tundra map<br />
  45. 45. Grasslands map<br />
  46. 46. Taiga map<br />
  47. 47. Mediterranean map<br />
  48. 48. If you want to learn more, visit:<br />http://www.longmeadow.k12.ma.us/wms/pages1/renius/biome.html<br />http://www.mbgnet.net/<br />

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