1. Ecology
Chapter 3

2. Interactions and interdependence
Vocabulary
Ecology
What is ecology?
Haeckel saw the living world as a household with an economy in which organisms play a role.
Ecology is the scientific study of interactions among organisms and between organisms and their environment.

3. Vocabulary Biosphere Biotic Factors Abiotic Factors
The biosphere contains the combined portions of the planet in which all of life exists, including land, water, and air.
The biosphere extends from 8 Km above Earth’s surface to as far as 11 Km below the surface of the ocean
Biotic Factors
Living things
Example.- plants, deer, wolf.
Abiotic Factors
Non living things
Example.- air, light, water.

4. Levels of Organization in Ecology
To understand relationship within the biosphere, ecologists ask questions about events and organisms that range in complexity from a single individual to the entire biosphere.

5. Vocabulary Species Population Community Ecosystem Species
Group of similar organisms that can breed and produce fertile offspring.
Population
Group of individuals of the same species that live in the same area.
Community
A group of populations that live in the same area
Ecosystem
A collection of all the organisms that live in a particular place, together with their nonliving or physical environment.

6. Ecosystem
Community
Habitat

7. Vocabulary Biome Biosphere Biome
Group of ecosystems that have the same climate and dominant communities.
Biosphere
Contains the combined portions of the planet in which all of life exists, including land, water, and air.

8. Levels of Organization

9. Levels of Organization
Individual
Population
Community
Ecosystem
Biome
Biosphere

10. Levels of Organization
Individual
Population
Community
Ecosystem
Biome
Biosphere