1. Environmental problems

3. What is an environmental problem?
Situation caused by activities, processes or
human behaviour: economic, social, political,
among others, that disrupt the environment and
cause negative impacts on the environment, the
economy and society.

4. Environmental problematic
Biotic factors; organisms, populations , communities, ecosystems
Abiatic factors: weather, hydrology, geology
Anthropic factors: culture
Culture:
Manner in which men relates himself
with his physical surroundings.

5. Overpopulation
http://images.google.com/url?q=http://senescence.info/overpopulation.jpg&sig=__HWRp05Jk4j6RjIwaUgzX9bEQVbg=

6. Overpopulation
Transformation of
landscape
Change in the use of
land
Allocation of fragile
ecosystems – wetlands
-Demand of resources and
services
-Pollution

7. Overpopulation

8. Cambio climático

9. Green house effect
Natural effect
Life conditions
Human actions Modification of
the conditions
Increase in
the amount
of solar
radiation.

10. • The
Green housecontributes
activity that most
effect to CO2
emissions is the burning of fuels fossils for the
generation of energy, it causes around 70-75%
of emissions

11. Principal countries, producers of CO2
http://www.solcomhouse.com/co2maapp.gif

12. Destruction of the ozone layer

13. Destruction of the ozone layer

14. Destruction of the ozone layer

15. Loss of biodiversity
Causes of extintion
(4 horsemen of the Apocalypse
Jared Diamond)
- Exploitation
- Loss of Habitat
-Chain, mass extinctions
- Introduction of exotic invasive species
3,5 millones de barriles de
petróleo al año.

16. Loss of biodeversity
•Exploitation

17. PÉRDIDA DE BIODIVERSIDAD
CAUSAS DE EXTINCIÒN:
(4 jinetes del Apocalipsis Jared Diamond)
•Sobre explotación
•Pérdida de hábitat
•Extinciones en cadena
•Introducción de especies
exóticas invasivas 3,5 millones de barriles de
petróleo al año.

18. Loss of biodeversity
DEFORESTATION
70%
Forest
Prairies
Wetlands

19. Loss of biodeversity
DEFORESTATION
% of the total tropical rain forests by country
35
30
25
20
15
10
5
0
Only 10 countries contain more than 75% of all tropical forests on the planet

22. Loss of biodiversity
The greatest extinction of the modern
era
•Extinción en cadena

23. PÉRDIDA DE BIODIVERSIDAD
CAUSAS DE EXTINCIÒN:
(4 jinetes del Apocalipsis Jared Diamond)
•Sobre explotación
•Pérdida de hábitat
•Extinciones en cadena
•Introducción de especies
exóticas invasivas 3,5 millones de barriles de
petróleo al año.

24. -Cause of 40% of extinctions in Colombia second cause
of extinction of species in the world-"National Plan for
the prevention, control and management of the
species introduccidas, exotic, invasive and
transplanted." "(IAvH, The Nature Conservancy.)" (GNP
- CBD)

25. Biological invasions

26. Facebook: Carrera de Ecología
Facultad de Estudios Ambientales y Rurales
Universidad Javeriana
3208320 ext. 4815 o 4836