Chapter 6. Chapter 6: Ecosystems and Nutrient Cycling
What are tolerance limits...
Guiding Question 6.3
What are tolerance limits, and how do they affect the distribution of a species within its ecosystem?
Why You Should Care
Tolerance ranges impact your daily life already. For example, excessive levels of suspended particles, nutrients, and pollutants in fisheries like the Chesapeake Bay have led to the collapse of important fisheries. With global climate change apparently at hand, ecologists are concerned about how changes in temperature, rainfall, and severe storms will affect organisms and ecosystems. Understanding tolerance limits makes predicting future trends and potential issues more accurate.
Test Your Vocabulary
Fill in the blank with the correct term to match the following definitions:
The range, within upper and lower limits, of a limiting factor that allows a species to survive and reproduce is known as the .
The critical resource whose supply determines the population size of a given species in a given biome is known as the .
Question Sequence
1.
A resource that is ________ for an organism or population is in shorter supply than all other resources and therefore determines the maximum growth or population size for the organism or population.
| A. |
| B. |
| C. |
| D. |
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