Population Dynamics SQA HIGHER BIOLOGY Unit 3: Control and Regulation
What affects population size?
How do we monitor populations?
What population changes can be seen here?
- Regulation of plant and animal populations:
- Population fluctuations: the relative stability of populations, despite short-term oscillations in number.
- Factors influencing population change.
- Density-independent factors to include temperature and rainfall.
- Density-dependent factors to include disease, food supply, predation and competition.
- The need to monitor wild populations.
- Succession and climax in plant communities.
Regulation of Populations
- What is meant by reproductive potential and environmental resistance?
- Explain the difference between ‘density-independent’ and ‘density-dependent’ factors.
- Outline examples of each type of factor.
- Complete the Density Worksheet.
- What is the link between population dynamics and homeostasis?
- Why do we need to monitor wild populations?
- Outline one example for each of these purposes.
- What is plant succession?
- What is a pioneer community?
- Can you think of examples of these?
- What is the climax community?
- What is primary succession?
- What is secondary succession?
- What are the characteristics of a climax community?
- How do these differ in a pioneer community?
- What is the difference between ‘climatic’ and ‘edaphic’ climax communities?
- How do humans affect succession?
- How does intensive grazing affect succession?
Congratulations You've reached the end of the Higher course!!