2.6 Changes

Essential Idea

• Resource availability and competition regulate population growth.

• Species have evolved strategies by which to survive within their environment.

• Environments and the organisms within tend to change based on (somewhat) predictable patterns.

Assessment Statements

• 2.6.1 Explain the concepts of limiting factors and carrying capacity related to population growth.

• 2.6.2 Describe and explain S and J population curves.

• 2.6.3 Describe the role of density-dependent and density-independent factors, and internal and external factors, in the regulation of populations.

• 2.6.4 Describe the principles associated with survivorship curves including, K and r strategists.

• 2.6.5 Describe the concept and processes of succession in a named habitat.

• 2.6.6 Explain changes in energy flow, gross and net productivity, diversity and mineral cycling in various stages of succession.

• 2.6.7 Describe factors affecting the nature of climax communities.

Key Vocabulary

• Population growth

  • Limiting factor

  • Carrying capacity

• Influencing population growth

  • Density-dependent factors

  • Density-independent factors

  • Internal factors

  • External factors

• Survivorship curve

  • K strategies

  • r strategies

• Succession

  • Primary

  • Secondary

  • Climax communities

"Topic 2.6: Part 1" by NicheScience (10:47)