Transcript Business growth design template

Chapter 8
Understanding Populations
Definition
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Population: all the members of a species
living in the same place at the same time
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Are the following members of the same
populations?
Jesus, Mary, and Joseph?
 You and Justin Bieber?
 Your dog and your neighbor’s dog?
 You and your neighbor’s kitty?
 The pebbles in the gravel lot?
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Investigation
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Bunnies
Selective Pressure : Food
 Mutation: Long Teeth
 Questions
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1.
2.
What happens to the population?
Why do you think this happens?
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Population Characteristics
Breeding
 Term: refers to group itself and
size of group
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Example:
 You
are a population of senior girls.
 The population of the senior class is 56.
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Properties of Populations
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Density- amount per unit area
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Properties of Populations
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Dispersion- how individuals are
spread over a given space
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How Does a Population
Grow?
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Growth rate: a change in the size
of a population over time
Growth Rate
=
Births
_
Deaths
Can be +, -, or 0
 What would happen if…
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How Fast Can a Population
Grow?
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Video
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Terms:
Exponential growth
 Carrying Capacity
 Logistic Population Growth
 Range
 Dispersion
 Intraspecific Competition
 Interspecific Competition
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Homework
Wonder Journal Due
 Watch http://educationportal.com/academy/lesson/popula
tions-density-survivorship-and-lifehistories.html#lesson and
complete QuizStar quiz
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Today’s Tasks
Share Wonders
 Homework Questions
 8.2 Lecture Part 1
 Vocabulary Review
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9:15—10:05
Homework Review
Goal: Reproduce Successfully = Survival of Species
Significant
Considerations:
• # of offspring
• Parental Care
• Resource allocation
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Homework Review
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Carrying Capacity = “k”
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8.2
How Species Interact with Each Other
Video Terms
(start at 7:00 min)
Abiotic Factors
 Habitat
 Niche
 Density-Independent Factors
 Density-Dependent Factors
 Predator
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12:35-1:25
Term Review
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Habitat vs. Niche
where.
how.
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Density-Dependent Factors
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Limited resources
Infectious (Contagious) Disease
Density-Independent Factors
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Weather
Disease (Cancer)
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Predation
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Density Dependent or Density Independent?
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What makes a predator more successful?
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Draw a Successful Predator
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Other Species Interactions
Interaction
Effects
Example
Additional Notes
Competition
Direct vs. Indirect
Niche restriction
Predation
Adaptations
Parasitism
Mutualism
Examples
Commensalism
Examples
Symbiosis- a relationship in which two species live in close association
R/K Selection Theory
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Predator Adaptations
Defensive Adaptations
 Camouflage
 Chemical Warfare
 Mimicry
Offensive Adaptations
 Speed, ambush
tactics
 Venom
Batesian
 Mullerian
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Back
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Batesian Mimicry
Back
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Mullerian Mimicry
Back
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Camouflage
Back
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Mutualism
Back
Commensalism
Back
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R/K Selection Theory
 Online Notes
 Currently OUTDATED theory
 BUT…important because it is still referred to
 According to the theory,
 R-selected species = the species whose
reproductive habits produced large amounts of
offspring who had low chance of survival into
adulthood
 in other words, Type III survivorship curve
Percentage of
Population
Surviving
Time
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R/K Selection Theory
 Online Notes
 Currently OUTDATED theory
 BUT…important because it is still referred to
 According to the theory,
 K-selected species = the species whose
reproductive habits produced few offspring, had
high parental care and resources, and who had high
chance of survival into adulthood
 in other words, Type I survivorship curve
Percentage of
Population
Surviving
Time
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R/K Selection Theory
 In actuality: reproductive strategies for individual species
are more complex than this
 they are a combination of these factors
 “Each species' life history is uniquely adapted to
maximize its reproductive success based on all of the
factors that affect its fitness.”
 “The factors that have the greatest effect on one
species may not be very important to another species,
even if it shares the same habitat.”
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Vocab List
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Directions: With a partner, create categories and classify these
words. All words must belong to a category, and all categories
must contain more than one word.
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Exponential growth
Carrying Capacity
Logistic Population Growth
Range
Dispersion
Intraspecific Competition
Interspecific Competition
Abiotic Factors
Habitat
Niche
Density-Independent Factors
Density-Dependent Factors
Predator
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Survivorship Curve
Types I, II, III Survivorship
Life History
K-Selection
R-Selection
Predation
Population
Parasitism
Mutualism
Commensalism
Symbiosis
Growth Rate
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Categorize Your Vocab
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Homework

Test Friday!
Chapter 8, all notes and terms
 Don’t forget the video notes
 PowerPoint will be posted under
“Assignments”
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Wonder Journal Tomorrow
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