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Campbell Biology CH 53. Population Ecology. Which do you think is the most important in population ecology?. Age Structure Environmental Factors Population Density & Distribution Population Size & Growth Survivorship. All of the following are required to be in a population EXCEPT:.

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Campbell biology ch 53

Campbell Biology CH 53

Population Ecology


Which do you think is the most important in population ecology
Which do you think is the most important in population ecology?

  • Age Structure

  • Environmental Factors

  • Population Density & Distribution

  • Population Size & Growth

  • Survivorship


All of the following are required to be in a population except
All of the following are required to be in a population EXCEPT:

  • Interact

  • Interbreed

  • Share Resources

  • Same Environment

  • Same Species

  • Uniform Distribution


Population density is the
Population density is the EXCEPT:

  • Total # of Individuals

  • # of Individuals per Area

  • # of Individuals per Volume

  • Both 2 & 3


Population density can be determined by
Population density can be determined by EXCEPT:

  • Mark-Recapture

  • Dispersal

  • Direct Count

  • Both 1 & 2

  • Both 1 & 3

  • Cannot ever be fully determined


Population same species resources environment that interact interbreed
Population = same species, resources, environment that interact/interbreed

  • Population Density = how many individuals are living in a specific area or volume.

  • Use density to determine count and vice versa … think back to our yeast lab.

  • General Distribution

U2-5 Describe interactions and factors that affect population size and growth.


Bio hac tapping into knowledge
BIO interact/interbreedHAC: Tapping Into Knowledge

  • Topic: Population Ecology & Survivorship.

  • Questions:

    • What is the effect of age on survival in human populations?

    • What is the effect of gender on survival in human populations?

  • Hypothesize It!

  • Analyze It! Make 3 Graphs

  • Conclude It!

U2-5 Describe interactions and factors that affect population size and growth.


Survivorship how long will you survive
Survivorship = interact/interbreedHow long will you survive?

U2-5 Describe interactions and factors that affect population size and growth.


Exponential population growth assumes
Exponential population growth assumes interact/interbreed

  • Short Gestation

  • Long Gestation

  • Unlimited Resources

  • Limited Resources


Which of the following limit exponential growth
Which of the following limit exponential growth? interact/interbreed

  • Immigration

  • Emigration

  • Deaths

  • Births

  • Both 1 & 3

  • Both 2 & 3

  • Both 2 & 4


Exponential population growth
Exponential Population Growth interact/interbreed

  • Growth=(New Individuals)–(Loss of Individuals)

  • Equations:

    • Where:

      • r is the per capita growth rate

      • N is the population size

      • ΔN is the change in population

      • Δt is the time interval

U2-5 Describe interactions and factors that affect population size and growth.


Exponential population growth1
Exponential Population Growth interact/interbreed

U2-5 Describe interactions and factors that affect population size and growth.


Population growth example problem
Population Growth Example Problem interact/interbreed

  • In 2009, the USA had a population 307 million. If there were 14 births and 8 deaths per 1,000 people, what is the growth rate of US citizens in 2009 (not including Immigration or Emigration)?

U2-5 Describe interactions and factors that affect population size and growth.


Logistical growth is more representative of populations because
Logistical growth is more representative of populations because

  • Populations are limited by resources

  • Birth & Death Rates Oscillate

  • Density is independent


Logistical population growth
Logistical Population Growth because

  • Carrying Capacity (K) = the total number of individuals an ecosystem can support.

  • Equation:

U2-5 Describe interactions and factors that affect population size and growth.


Exponential vs logistical growth
Exponential vs. Logistical Growth because

U2-5 Describe interactions and factors that affect population size and growth.



Logistical growth of organisms
Logistical Growth of Organisms anymore.

U2-5 Describe interactions and factors that affect population size and growth.


Factors affecting population growth
Factors Affecting Population Growth anymore.

Density-independent

Density Dependent

Competition

Predation

Toxic Waste

Intrinsic Factors

Territoriality

Disease

  • Climate/Weather

  • Natural Disasters

  • Etc.

U2-5 Describe interactions and factors that affect population size and growth.


Survivorship life history
Survivorship & Life-History anymore.

R-Selected Species

K-selected Species

Density-Dependent Selection of Traits

Examples:

Low # of offspring with large investment/energy of care.

  • Density-Independent Selection of Traits

  • Examples:

    • High # of offspring with little investment/energy towards care.

U2-5 Describe interactions and factors that affect population size and growth.


K selection in american kestrels
K-Selection in American Kestrels anymore.

U2-5 Describe interactions and factors that affect population size and growth.


Population dynamics many factors affect population success
Population Dynamics: Many Factors Affect Population Success anymore.

U2-5 Describe interactions and factors that affect population size and growth.


Predator prey cycles
Predator-Prey Cycles anymore.

U2-5 Describe interactions and factors that affect population size and growth.


Human population growth
Human Population Growth anymore.

  • http://www.youtube.com/watch?v=4BbkQiQyaYc


Human population growth1
Human Population Growth anymore.

U2-5 Describe interactions and factors that affect population size and growth.


Age structure diagrams
Age Structure Diagrams anymore.

U2-5 Describe interactions and factors that affect population size and growth.


Comparisons of industrialization
Comparisons of Industrialization anymore.

U2-5 Describe interactions and factors that affect population size and growth.