Ecological Succession

SY
by Sarah Yozviak1 view·Updated May 16, 2021
Create your own

Chapters

Audio TranscriptAuto-generated

  1. Hello, 9th Grade Biology.
  2. I hope everyone is having a great day.
  3. Um Today we will be doing a couple of questions
  4. for warm up and then I will go over how
  5. to a scavenger hunt at the end of the presentation
  6. and how you will turn in the answer for.
  7. So please answer the following questions on the next slide.
  8. Yeah. On a piece of paper, please answer the following
  9. questions. One if a tree falls in a forest and
  10. no one is around to hear it doesn't make a
  11. sound. Two is the fallen tree and tearing down trees
  12. part of primary or secondary succession.
  13. And how do we know this?
  14. 3? What type of succession?
  15. What a formation of an island after a volcanic eruption
  16. be? Yeah, For what is the final step of primary
  17. and secondary succession a few moments later?
  18. All right, let's go over the questions.
  19. So question one, if a tree falls in the forest
  20. and no one is around to hear it doesn't make
  21. a sound.
  22. Well some say that the tree does make it sound
  23. because when it falls it does create that vibration.
  24. Others say it does not because the sound is the
  25. sensation that we hear when it vibrates in our ears.
  26. So really the answer is more based on your definition
  27. of what sound is.
  28. So, if you want to kind of determine what your
  29. answer is, I have leaked a article on the slide.
  30. If you want to read more about it in your
  31. own free time, Question #2 is the fallen tree or
  32. tearing down the trees a part of primary or secondary
  33. succession. And how do we know this?
  34. Well, it would be secondary succession.
  35. Why? Well, because there is sustainable soil conditions, um there
  36. was a population before it and um the already soil
  37. existing. So let's go over the steps of secondary succession
  38. just to get a little review.
  39. Let's go over the steps of secondary succession.
  40. Number one would be an area of growth.
  41. Number two.
  42. Number three would be a district rates.
  43. So you would be the fire and three would be
  44. the whole vegetation is destroyed.
  45. Number four would be, But there will only be left
  46. soil.# five would be all the grasses and small
  47. plants that would grove was fairly fast after that.
  48. Six would be some small bushes and the beginning of
  49. trees. Seven would be fast growing trees and evergreen trees
  50. and some bamboo trees.
  51. And then eight would be these big, beautiful older trees
  52. that we'd kind of be similar to where the whole
  53. forest begins.
  54. Question# three, What type of succession was a formation
  55. of an island after a volcanic eruption?
  56. Meat? This would be secondary succession.
  57. You know this because they have not yet formed the
  58. soil. There also has been no previous life on there,
  59. and it has started from the bare rock pioneer species.
  60. We need to come and colonize the land for it
  61. to become an ecosystem.
  62. And the next slide we will go over what primary
  63. succession is.
  64. Let's go over.
  65. Primary succession.
  66. Primary succession begins in a lifeless area.
  67. An example of these lifeless areas would be where recent
  68. lava flow or recent sand dunes, or it may even
  69. be rocks that are left behind from glacial.
  70. You're shooting The first species to colonize this area would
  71. be fast growing and really play X as these plants
  72. decompose, they create the first layer of soil.
  73. These plants would also create habitats for small animals.
  74. Over time, these plants were will begin to be replaced
  75. by other shrubs and grasses.
  76. After an even longer period of time, Big beautiful old
  77. trees and vegetation would grow resulting in a climax community.
  78. Now let's take a look at question# four.
  79. Question# four, What is the final step of both
  80. primary and secondary succession?
  81. Hey, think of an old oak tree?
  82. Well, the answer would be a climax community, which is
  83. also known to be the most stable and unchanging of
  84. the environment.
  85. Now, let's go over today's activity, which is a scavenger
  86. hunt. Um, you will each be split up into six
  87. groups. Each group needs to have one answer sheet and
  88. it will be just like the example I have on
  89. the screen, but instead of a green, it will be
  90. all right.
  91. Um, there are six different locations around the room.
  92. Each has a QR code in a small activity that
  93. you will do.
  94. Make sure you scan the code, follow the extra instructions
  95. for the activity and answer the questions as you feel
  96. along. Please be sure to write everyone's name on, on
  97. the top of the of the sheep.
  98. You may turn in a hard copy or cement a
  99. digital copy at the QR code location above the turning
  100. box. Please let me know if you have any questions
  101. and have a great day.