Decomp[1]

347 views
272 views

Published on

Training slides to explain what is decomposition

Published in: Environment, Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
347
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Decomp[1]

  1. 1. Decomposition © 2001 Alvin Chew Rainforest Conservation Program
  2. 2. plant nutrients = chemical substances which plants need Examples: nitrogen, phosphorous, and potassium apart from carbon dioxide, oxygen and water
  3. 3. Where do plant nutrients come from? <ul><li>from break down of the rock under the soil - very slow! </li></ul><ul><li>micro-organisms can fix nitrogen from the air </li></ul><ul><li>most are recycled from dead plant or animal material </li></ul>
  4. 4. decomposition = breaking down dead plants or animals (or parts of them) to release plant nutrients Example: a fallen branch rots away and the nutrients are absorbed by the roots below it.
  5. 5. decomposer = an animal which feeds on dead plants or animals (or parts of them) Example: a termite, a millipede or an earthworm
  6. 6. Why are decomposers important ? <ul><li>they release nutrients </li></ul><ul><li>they break up and mix the material </li></ul><ul><li>they provide food for other animals </li></ul>
  7. 7. Why are decomposers important ? Most of the plant material in a tropical forest goes into the decomposition food chain
  8. 8. Some plants use animals to get extra nutrients <ul><li>they ‘eat’ insects (pitcher plants, sun-dew) </li></ul><ul><li>they provide a ‘home’ for animals (ant plants, hollow trees) </li></ul>© 2001 Alvin Chew Rainforest Conservation Program

×