Population Ecology

1. Size

1.1. The number of organisms in a population.

2. Density

2.1. Describe how individuals are with each other

3. Demographic Parameters

3.1. Parameters that lead to numerical changes in populations.

4. Population structure

4.1. As populations are made up of individuals of different types; population structure describes how many there are of each type.

5. Competition

5.1. Occurs between organisms that require the same resources, whicha are limited

6. Commensalism

6.1. One member is affected negatively, for example, plants that feed on others.

7. Mutuality

7.1. Organisms of different species benefit mutually when interacting

8. A population consists of all members of a species that live in a particular area.

8.1. A population may be affected by factors such as food avalability or quality, habitat, change, and other factors.

9. Animal Welfare

9.1. Microclimate

9.1.1. Temperature

9.1.2. Ventilation

9.1.3. Humidity

9.1.4. Light

9.1.5. Air/Water quality

9.2. Human influence

9.2.1. Space/pen/tank design

9.2.2. Flooring materials

9.2.3. Bedding materials

9.2.4. Trough space

9.2.5. Water trough space

9.2.6. Environmental enrichment

9.3. Degree of social interactions

9.3.1. Density

9.3.2. Group size

9.3.3. Group composition

9.3.4. Social isolation

9.4. Housing systems

9.4.1. Nutrition and feeding

9.4.2. Handling

9.4.3. Animal keepers training

9.4.4. Reproduction

9.4.5. Genetic reproduction

9.4.6. Managemet practices

10. Birth rate

10.1. Indicates how many individuals are born as a consequence of reproduction and how often.

11. Predation

11.1. Is an organism that feeds on another

12. Amenalism

12.1. One member is affected negatively, for example, plants that feed on others

13. Population growth

13.1. Abiotic

13.1.1. Prevent populations from overgrowing, either reducing their reproducting capacity or dying

13.2. Biotic

13.2.1. These are factors that regulate the size of populations, allowing population growth or limiting according the situation