Ths general biology unit 1 our environment part 2_succession and biodiversity_v1516

1. Unit 1 Notes:
Succession
&
Biodiversity

2. Where did we
come from?
• Photosynthesis &
Cellular Respiration
• Feeding Relationships &
Energy
• Human Impact
• Biomagnification
• Invasive Species
• Climate Change
Where are
we going?
• Ecosystem Stability
• Ecosystem Biodiversity

3. (1) Biodiversity
•Biodiversity is the variety of different
types of living organisms in an ecosystem.
•The larger the variety, the greater the
stability of the ecosystem during times of
change.

4. 4 July 22, 2012 Footer text here

5. (2) Changes to Ecosystem Stability
•Each unique ecosystem cycles energy and matter
because of the specific plants, animals, and
climate patterns it contains and experiences.
•The following can cause dramatic changes in
an ecosystem:
•Change in climate.
•Negative human activities.
•Loss of biodiversity, plants, and animals.

6. 6 July 22, 2012 Footer text here

7. (3) Succession
•Succession is the process in which the
structure of an ecosystem’s community
changes due to some event.
•The “change in structure” is due to the
change in the types of plants and animals
that inhabit the area at different times.

8. (4) Common Succession Catalysts
•Forest Fires
•Storms
•Tectonic Activity
(Earthquakes, Volcanic Eruptions, Change to Land
Masses)
•Human construction / agriculture

9. (5) Primary Succession
•Succession that happens in an open area without
any living organisms (and usually without soil).
•Example: Formation of new land mass.

10. 10 July 22, 2012 Footer text here

11. 11 July 22, 2012 Footer text here

12. (6) Secondary Succession
•Succession that occurs to an area AFTER primary
succession has been disrupted/destroyed by another event.
•Some soil and plants/animals have already invaded the
area.
•Example: A natural disaster / human activity disturbs an
already established habitat of plants and animals.

13. 13 July 22, 2012 Footer text here

14. 14 July 22, 2012 Footer text here

15. 15 July 22, 2012 Footer text here