This can result in organisms evolving together or having coevolved. • B. Each Species’ Role in a Community Is Defined by Its Niche A particular species within a community often has its own niche. However, there are some • environments where organisms will seek out similar resources and have competition within their own niches. Unit 2. Ecosystems and Communities: Organisms and Environments List the characteristics that define an organism’s niche. • 1. 2. 3. 4. External pressures can influence the environmental conditions and within which an organism can • inhabit its niche. Explain the difference between a realized niche and a fundamental niche. C. Competition Can Be Hard to See, but It Still Influences Community Structure When the niches of different species overlap, the competition can lead to competitive exclusion or • resource partitioning. Indicate what occurs in each environment and the expected outcome. • Competitive Exclusion Resource Partitioning
• This can result in organisms evolving together or having coevolved. B. Each Species’ Role in a Community Is Defined by Its Niche • A particular species within a community often has its own niche. However, there are some environments where organisms will seek out similar resources and have competition within their own niches. Unit 2. Ecosystems and Communities: Organisms and Environments • List the characteristics that define an organism’s niche. 1. 2. 3. 4. • External pressures can influence the environmental conditions and within which an organism can inhabit its niche. Explain the difference between a realized niche and a fundamental niche. C. Competition Can Be Hard to See, but It Still Influences Community Structure • When the niches of different species overlap, the competition can lead to competitive exclusion or resource partitioning. • Indicate what occurs in each environment and the expected outcome. Competitive Exclusion Resource Partitioning
unit-2-ecology.docx