1. Ecology: an introduction

2. The study of the interactions that take place among organisms and their environment

3. Biosphere The part of Earth that supports life
Top portion of Earth's crust (lithosphere)
All the waters that cover Earth's surface (hydrosphere)
Atmosphere that surrounds Earth

5. Ecosystem
All the organisms living in an area and the nonliving features of their environment
Biotic – living
Abiotic – nonliving

6. Biotic
Biotic – living
Plants
Animals
Single celled organisms
Fungi

7. Abiotic
Abiotic – nonliving
Water
Air
Soil
Temperature
Sunlight

8. Parts of an Ecosystem

9. Population
All the organisms in an ecosystem that belong to the same species (biotic)

11. Populations All of the same species in an ecosystem

12. Community
All the populations in an ecosystem (biotic)

13. http://www2. tpwd. state. tx

15. The place in which an organism lives
Habitat
The place in which an organism lives
provides the kinds of food and shelter, the temperature, and the amount of moisture the organism needs to survive

17. Niche
The specific role (job) that an organism plays in its ecosystem

19. Limiting Factors
Anything that restricts or controls the number of individuals in a population

20. Limiting Factor
Anything that restricts the number of individuals in a population.
Includes living / biotic and nonliving / abiotic features of the ecosystem

22. Competition All living things compete for
Food
Space
Competition limits population growth

23. Competition
Food
Space

24. Competition
Competition caused by population growth affects many organisms, including humans
Limits population size

26. Carrying Capacity
The largest number of individuals of one species an ecosystem can support

27. Carrying Capacity
The maximum number of individuals of any species that can be supported by a particular ecosystem on a long-term basis

29. Energy Transfer
Food Chains
Food Webs
Energy Pyramids

31. Relationships in Ecosystems

32. Symbiosis
Any close relationship between species
en.wikipedia.org

33. Mutualism A relationship in which both species benefit Pollination
Cleaner fish
Lichens: algae + fungus
www4.tpgi.com.au

34. Commensalism
A relationship in which one species benefits and the other is neither helped nor harmed
Shark & remora
Barnacles on whale

35. Parasitism
A relationship in which one organisms benefits and the other is harmed
Mistletoe
Tick

36. Predator - Prey
Predators are consumers that capture and eat other consumers, called prey

37. Cooperation Organisms working together toward a common end or purpose