1. Populations Characterized by: Geographic distribution Density
Growth Rate
Births
Deaths
Movement (Immigration/Emigration)

2. Concept Map Population Growth Logistic Exponential growth Limits on
Section 5-1
Population
Growth
can be
Exponential
growth
Logistic
characterized by
represented by
characterized by
represented by
Falling
growth rate
S-shaped
curve
Limits on
growth
No limits on
J-shaped
Constant
Unlimited
resources
which cause a
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3. Exponential Growth
Ideal conditions:
Unlimited resources

4. Logistic Growth
As resources become less available, growth slows or stops
Carrying capacity

5. Figure 5-4 Logistic Growth of Yeast Population
Section 5-1
Carrying capacity
Number of Yeast Cells
Time (hours)
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6. Limiting Factors Limiting Factors: Density-Dependent
Density-Independent

7. Density-Dependent Limiting Factors
Competition
Predation
Parasitism
Disease

8. Density-Independent Limiting Factors
Unusual weather
Natural disasters
Seasonal cycles
Human activities

9. Concept Map Human Activities Section 6-1 Hunting and gathering
that have changed the biosphere include
Hunting and
gathering
Agriculture
Industrial
growth
Urban
development
may have once caused
often relies on the methods of the
have resulted in
Extinctions of
large animals
Green
revolution
High standard
of living
Increased
pollution
which increased
Food supply
Pesticide use
Monoculture
use
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10. Human Impacts on Stability of Ecosystems
Figure 6-22 Ecosystem Services
Human Impacts on Stability of Ecosystems
Section 6-4
Solar energy
Production of oxygen
Storage and recycling of
nutrients
Regulation of climate
Purification of water and air
Storage and distribution of
fresh water
Food production
Nursery habits for wildlife
Detoxification of human and
industrial waste
Natural pest and disease
control
Management of soil erosion
and runoff
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