Chapter 2: Problem 3
Why is it useful for ecologists to understand how a species they are studying is distributed within its ecosystem?
Chapter 2: Problem 3
Why is it useful for ecologists to understand how a species they are studying is distributed within its ecosystem?
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Get started for freeExplain the concept of a trophic cascade using the example of wolves, elk, willow, and streams in Yellowstone.
Human actions are shrinking populations and reducing their genetic variation. How might this affect the ability of a population to respond to an environmental alteration like climate change?
Using the example of spring wildflowers and the critical factor of rainfall, explain the term range of tolerance (in terms of the distribution of wildflowers within their range).
Distinguish between density-dependent and density-independent factors and give an example of each for the wolf population of Yellowstone.
Lesser goldfinches are small, seed-eating birds. In cities, both wild hawks and domestic cats eat these birds. Discuss several density-dependent and density-independent factors that could affect their carrying capacity.
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