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Questions and Answers
What is a primary characteristic differentiating primary succession from secondary succession?
What is a primary characteristic differentiating primary succession from secondary succession?
Which situation best exemplifies primary succession?
Which situation best exemplifies primary succession?
What defines secondary succession?
What defines secondary succession?
If M is the number of tadpoles initially caught and tagged, R is the number of tadpoles recaptured, and C is the number of tadpoles caught on the second day, which of the following relationships is used for estimating the population (N) of tadpoles?
If M is the number of tadpoles initially caught and tagged, R is the number of tadpoles recaptured, and C is the number of tadpoles caught on the second day, which of the following relationships is used for estimating the population (N) of tadpoles?
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Which is the best description of overpopulation’s effect on an ecosystem?
Which is the best description of overpopulation’s effect on an ecosystem?
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Environmental degradation can cause which of the following effects on population?
Environmental degradation can cause which of the following effects on population?
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Study Notes
Ecological Succession
- Primary Succession: a process of ecosystem development in an area where no soil or vegetation existed before, such as after a volcanic eruption or the formation of a new island.
- Secondary Succession: a process of ecosystem development in an area where soil and vegetation were previously present, but were disturbed or destroyed, such as after a forest fire or the clearing of land.
Key Characteristics of Ecological Succession
- Primary Succession: starting point is no previous ecosystem, with no soil or limited soil availability.
- Secondary Succession: starting point is an existing ecosystem that is disturbed or destroyed, with soil already present.
Mark-Release-Recapture Method
- Let M be the number of tadpoles initially caught and tagged.
- Let C be the number of tadpoles caught on the second day.
- Let R be the number of tadpoles recaptured on the second day.
Population Estimation
- N = (total population size) can be estimated using the mark-release-recapture method.
Causes of Change in Population
- Overpopulation: a cause of change in population.
- Environmental degradation: a cause of change in population.
Effects of Change in Population
- Increased competition for resources: an effect of change in population.
- Decrease or decline: an effect of change in population.
- Changes in feeding behavior: an effect of change in population.
- Increase in malnutrition: an effect of change in population.
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Description
Test your understanding of primary and secondary succession, two processes of ecosystem development that occur in different environments. Identify the characteristics and differences between these two types of succession.
