1. 1 What is Ecology?

2. 2 Organisms and Their Environment

3. 3 What is Ecology?? The study of interactions that take place between organisms and their environment.The study of interactions that take place between organisms and their environment. It explains how living organisms affect each other and the world they live in.It explains how living organisms affect each other and the world they live in. The study of interactions that take place between organisms and their environment.The study of interactions that take place between organisms and their environment. It explains how living organisms affect each other and the world they live in.It explains how living organisms affect each other and the world they live in.

4. 4 Habitat & Niche Habitat is the place a plant or animal livesHabitat is the place a plant or animal lives Niche is an organism’s total way of lifeNiche is an organism’s total way of life Habitat is the place a plant or animal livesHabitat is the place a plant or animal lives Niche is an organism’s total way of lifeNiche is an organism’s total way of life

5. 5 The Nonliving Environment Abiotic factors- the nonliving parts of an organism’s environment.Abiotic factors- the nonliving parts of an organism’s environment. Examples include air currents, temperature, moisture, light, and soil.Examples include air currents, temperature, moisture, light, and soil. Abiotic factors affect an organism’s life.Abiotic factors affect an organism’s life. Abiotic factors- the nonliving parts of an organism’s environment.Abiotic factors- the nonliving parts of an organism’s environment. Examples include air currents, temperature, moisture, light, and soil.Examples include air currents, temperature, moisture, light, and soil. Abiotic factors affect an organism’s life.Abiotic factors affect an organism’s life.

6. 6 Abiotic Factors include air, water, soil, temperature, wind, source of energy (usually sun) A A a, an(G) prefix not, without atoxic amoral abiotic amusia

7. 7 The Living Environment Biotic factors- all the living organisms that inhabit an environment.Biotic factors- all the living organisms that inhabit an environment. All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection.All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection. Biotic factors- all the living organisms that inhabit an environment.Biotic factors- all the living organisms that inhabit an environment. All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection.All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection.

8. 8 Biotic Factors Bio bio(s), bio(t) (G) root life include plants, animals, fungi, microorganisms biology biostatistics biography biotechnology biosphere biomechanics biotic biofeedback

9. 9 interact with each other in complex ways Biotic Factors also interact with abiotic factors in the ecosystem parasitism mutualism competition dependent upon water, minerals, temperature, light such as

10. 10 Abiotic or Biotic? Biotic

11. 11 Abiotic or Biotic? Abiotic

12. 12 Abiotic or Biotic? Abiotic

13. 13 Abiotic or Biotic? Biotic

14. 14 Levels of Organization

15. 15 Levels of Organization Ecologists have organized the interactions an organism takes part in different levels according to complexity.Ecologists have organized the interactions an organism takes part in different levels according to complexity.

16. 16 1 st Level of Organization Organism: An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and developsOrganism: An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and develops

17. 17 2 nd Level of Organization Population: A group of organisms, all of the same species, which interbreed and live in the same place at the same time.Population: A group of organisms, all of the same species, which interbreed and live in the same place at the same time.

18. 18 3 rd Level of Organization Community: All the populations of different species that live in the same place at the same time.Community: All the populations of different species that live in the same place at the same time.

19. 19 4 th Level of Organization Ecosystem: Populations of plants and animals that interact with each other in a given area with the abiotic components of that area. (terrestrial or aquatic)Ecosystem: Populations of plants and animals that interact with each other in a given area with the abiotic components of that area. (terrestrial or aquatic)

20. 20 do not necessarily have clear boundaries due to biotic and abiotic changes Ecosystems BioticBioticAbioticAbiotic migration, seed dispersal flood, erosion, drought can change daily as things move from one ecosystem to another

21. 21 5 th Level of Organization Biome: a major regional or global biotic community, a super ecosystem, defined chiefly by the dominant forms of plant life and the prevailing climateBiome: a major regional or global biotic community, a super ecosystem, defined chiefly by the dominant forms of plant life and the prevailing climate

22. 22 What level of organization? Organism

23. 23 What level of Organization? Community

24. 24 What level of Organization? Population

25. 25 Levels of Organization smallest unit of living things group of similar cells organized to work together group of different kinds of tissues working together group of organs working together one individual living thing all organisms of the same kind living in one area all interacting populations in an ecosystem all living and nonliving things interacting within a certain area large region with typical plants and animals that includes several ecosystems cell