Chapter 2 Guide Part II

1
Populations

• Chapter 2 Guide Part II

2
Population Characteristics

• Number of Individuals
• Same Species
• In an area or place

3
Community

• All the Plants Animals
• In a given area
• ? Community of Del Mar

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Forest Community ..
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2.Carrying Capacity versus Unlimited Growth.

• Carrying Capacity
• Limited
• Maximum
• Decline
• Unlimited
• No maximum
• Still growing

6
Populations
Homeostasis
Fluctuating

• Homeostasis
• Steady state BirthsDeaths
• No Growth
• Flat, straight graph
• Fluctuating
• Changing
• Grows or Declines

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4.Population Density

• Number per?
• Unit area
• ? Fish
• 5 fish per 10 gallons

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Density Dependent Factorsdiffer with the
biome/environment

• Amount food
• Disease
• Competition
• Parasites
• Versus Independent
• Abiotic factors
• Habitat disruption

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5.Predator Prey Cyclespage 102

• Prey grows
• Predator follows
• Prey falls
• Predator follows
• Etc,

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6. Demography Study of human populations, age
groups

• Natality
• Births
• Increases
• Mortality
• Deaths
• Decreases

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World Birth Death Rates
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Immigration Emigration

• Immigration
• Coming in
• Increases
• Emigration
• Going out
• Decreases

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World Populations are affected only by...

• Natality
• Mortality
• Aliens would immigrate!
• Space Colonies would emigrate