Ecology: Population Growth Curve Questions
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1. At which point is the actual growth rate of the population greatest?
2. At which point is the actual growth rate negative?
3. At which point is the logistically growing population growing at a rate that is closest to the biotic potential for a population of that size?
4. What does the hatched area represent?
5. Members of several species of desert shrub secrete chemicals from the roots that prevent other individuals from growing close to them. This is an example of ...?
6. A plant species that is strongly r-selected would likely ...?
7. The major factor determining the size of r in a species is ...?
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Solution Summary
Actual growth rates and closest biotic potentials are examined. The actual growth rate negatives are determined.
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1. At which point is the actual growth rate of the population greatest?
The growth rate is the slope of the curve. The population is growing the fastest (the slope is highest) at B.
2. At which point is the actual growth rate negative?
Just like the slope of a line, the growth rate will be negative when the curve decreases from left to right. The growth rate is negative at E.
3. At which point is the logistically growing population growing at a rate that is closest to the biotic potential for a population of that size?
This would happen when the slopes of curves 1 and 2 seem ...
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