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Principles of Ecology Objectives: 1. Explain the difference between abiotic and biotic factors. 2. Describe the levels of biological organization 3.

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Presentation on theme: "Principles of Ecology Objectives: 1. Explain the difference between abiotic and biotic factors. 2. Describe the levels of biological organization 3."— Presentation transcript:

1 Principles of Ecology Objectives: 1. Explain the difference between abiotic and biotic factors. 2. Describe the levels of biological organization 3. Differentiate between an organisms habitat and its niche.

2 Vocabulary Ecology Biosphere Biotic factor Abiotic factor Population Biological Community Ecosystem Biome Habitat Niche Predation Symbiosis Mutualism Commensalism Parasitism

3 Ecology Ecology: the study of relationships between living organism, and their interaction with their environments. Biosphere: The portion of the earth that supports life.

4 Biotic and Abiotic Factors
Biotic Factors: The living factors in an organism’s environment. Abiotic Factors: The non-living factors in an organism’s environment.

5

6 Levels of Organization in ecology
Organisms Population Biological community Ec osystem Biome Bioshpere

7 organism The lowest level of ecological classification is the single organism. (Example: one single fish)

8 Population A population is all the individuals of a single species that share the same geographic location at the same time. (example: a school of fish)

9 Biological Community Community: A group of interacting populations that occupy the same geographic area at the same time.

10 Ecosystem Ecosystem: includes a community and all the abiotic factors that effect it.

11 Biome Biome: a large group of ecosystems that share the same climate and have similar types of communities. (Example: a marine biome)

12 Habitat and Niche Habitat: the area where an organism lives.
Niche: the role or position that an organism has in it’s environment. (it’s job).

13 Community Interactions

14 Community Interactions
Competition: occurs when more than one organism uses a resource at the same time. Competition for food, water, space, light, and mates. Predation: The act of one organism consuming another organism for food.

15 Community Relationships Continued
Symbiotic relationship: A close relationship that exists when two or more species live together.

16 Three types of Symbiotic Relationships
Mutualism: when the two or more organisms both benefit from the relationship. Commensalism: a relationship when one organism benefits and the other organisms is neither helped nor harmed. Parasitism: a relationship when one organism benefits at the expense of another organism.


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