Section15

774 views
726 views

Published on

Ecology Note Cards

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
774
On SlideShare
0
From Embeds
0
Number of Embeds
15
Actions
Shares
0
Downloads
13
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Section15

  1. 1. Ecosystems Biology I Factoids
  2. 2. Factoid 256 <ul><li>Section 15 </li></ul><ul><li>An ecosystem is made up of communities and their environments. </li></ul>
  3. 3. Factoid 257 <ul><li>Producers (autotrophs) make their own food. </li></ul>
  4. 4. Factoid 258 <ul><li>Consumers (heterotrophs) get their energy by eating autotrophs (producers) or by eating other heterotrophs (consumers). </li></ul>
  5. 5. Factoid 259 <ul><li>Primary consumers eat producers. Energy is transferred from the producers to the primary consumers. Primary consumers are herbivores. </li></ul>
  6. 6. Factoid 260 <ul><li>Secondary consumers eat primary consumers. Energy is transferred when one organism eats another. </li></ul>
  7. 7. Factoid 261 <ul><li>Decomposers break down dead organisms into detritus (organic matter). </li></ul>
  8. 8. Factoid 262 <ul><li>A food chain is a series of feeding relationships starting with a producer. </li></ul>
  9. 9. Factoid 263 <ul><li>A food web is a series of overlapping food chains. </li></ul>
  10. 10. Factoid 264 <ul><li>The trophic level is a feeding level. Every step of a food chain is a trophic level. </li></ul>
  11. 11. Factoid 265 <ul><li>An energy pyramid shows the energy that is transferred between trophic levels. </li></ul>
  12. 12. Factoid 266 <ul><li>Only about 10% of the energy at each level is transferred to the next higher level. The rest is used by the organism itself and some is lost as heat. </li></ul>
  13. 13. Factoid 267 <ul><li>Since only 10% of energy is transferred from one level to another, a food chain usually only has 4 or 5 trophic levels. </li></ul>
  14. 14. Factoid 268 <ul><li>Biomass is the mass of dry organic materials in an organism. </li></ul>
  15. 15. Factoid 269 <ul><li>A biomass pyramid indicates the amount of organic material at a given trophic level. Typically producers have the largest biomass. </li></ul>
  16. 16. Factoid 270 <ul><li>A pyramid of numbers shows the approximate number of individual organisms at each level that an ecosystem can support. </li></ul>
  17. 17. Factoid 271 <ul><li>The biosphere is all living things on the planet. The biosphere is divided into biomes. </li></ul>
  18. 18. Factoid 272 <ul><li>Since matter can not be created or destroyed according to the Law of Conservation of Mass, it must be recycled in the environment. </li></ul>
  19. 19. Factoid 273 <ul><li>The Water Cycle </li></ul>
  20. 20. Factoid 274 <ul><li>Transpiration is the evaporation of water through the plant. </li></ul>
  21. 21. Factoid 275 <ul><li>The Carbon-Oxygen Cycle </li></ul>
  22. 22. Factoid 276 <ul><li>The Nitrogen Cycle </li></ul>
  23. 23. Factoid 277 <ul><li>Nitrogen fixation is accomplished by bacteria and lightning. </li></ul><ul><li>Denitrification is accomplished by bacteria. </li></ul>
  24. 24. Factoid 278 <ul><li>The Phosphorus Cycle </li></ul>

×