Monday Oct 13 th -Week 10 TOPIC : Population Dynamics OBJ : 3-5 DO NOW : EXT : Oh DEER! DUE DATE : Oct 14th DW : 4.1 Application Notes...

Monday Oct 13th-Week 10TOPIC: Population Dynamics OBJ : 3-5

DO NOW:

EXT: Oh DEER! DUE DATE: Oct 14th

DW: 4.1 Application Notes

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EXIT: Fill in your level of understanding AND provide a summary of what you learned in class today.

HANDOUTS to PICK-UP:

TURN IN to ABS box:

SEMINAR 2:

BEFORE/AFTER SCHOOL:DW-4.2 Book Pages/notes/vocab

-Check weekend work-Go Over 4.1 Application notes

What advantage do smaller fish gain by forming clumped groups, or schools?

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Science of Life

 MONDAY: ___10__/__13___ OBJECTIVE…#_3-5_____ TOPIC:

Population Dynamics

 Daily Work Grade- 4.2 Book Pages/4.2 Vocab 

DW GRADE: 2 1 0 

MONDAYDO NOW

Q:What advantage do smaller fish gain by forming clumped groups, or schools?

A: Schooling behavior confuses predators and provides additional safety for individuals within the center of the school.

3---EXPLAIN the differences between population size, density, and dispersion.   4---SPECULATE how the rate of change in populations is determined by the combined effects

of birth, death, emigration, and immigration.   5---COMPARE & CONTRAST both exponential & logistical models of population growth.

UNIT OBJECTIVES

Add on to each QUESTION every night as REVIEW!

Vocabulary

These should be

done by test day!

population density dispersion density-independent factor density-dependent factor population growth rate emigration immigration carrying capacity k-strategist r-strategist

GROUP WORK: GUIDED NOTES-As a GROUP complete the guided note using your knowledge from the reading.

4.1 POPULATION DYNAMICSWHAT YOU WILL LEARN-concepts of carrying capacity & limiting factors

-ways in which populations are distributed

MAIN IDEA:populations of species are described by: -density -spatial distribution -range -growth rate

MAIN IDEA

REVIEW VOCABULARYpopulation--group of SAME species/SAME place/SAME time

REVIEW VOCABULARY

POPULATION CHARACTERISTICS-COMPARE the terms by defining & giving examples

spacing of organisms

# of individuals per area

-area where an organism lives & reproduces

population density- spatial distribution (dispersion)-

population range-

Habitat area= 4km231 individuals [bison]DENSITY = 7.75 indv per area km2

2 different types-limited to small or large areas-affected by abiotic & biotic factors

POPULATION CHARACTERISTICS

Clumped, random, uniform

POPULATION CHARACTERISTICSIDENTIFY each pattern of dispersion representedNOTE characteristics of each

random-unpredictable spacing-seeds blown in wind

uniform-compete for resources-social interactions

clumped-distribution of nutrients-social-mating

POPULATION LIMITING FACTOR

POPULATION LIMITING FACTOR-COMPARE the terms by defining & giving examples

-restricts the # of organisms in an area

ABIOTIC—does NOT depend on # of ind in population-extreme weather, pollution

-max # of individuals an environment can support for long term

carrying capacity-

limiting factor-

density-independent factor-

density-dependent factor-BIOTIC—DOES depend on # of ind in population-predation, disease, competition

LIMITED by the energy, water, nutrients available

EX- food supply

POPULATION LIMITING FACTOR

POPULATION LIMITING FACTOR-CLASSIFY each limiting factor

FACTORbiotic or abiotic

DENSITY-INDEPENDENT

DENSITY-DEPENDENT

Lava flow

Change in number of predators

Spread of disease

Extremely cold winter

Toxic chemical spill into a stream

Intense competition for food sourceFlooding due to hurricane

Fungus that attacks elm trees

ABIOTIC

XX

X

XX

X

XX

BIOTIC

Stand-UP Sit-DOWN

POPULATION LIMITING FACTOR

Population growth rate-

emigration- immigration-

mortality- natality-

POPULATION LIMITING FACTOR-COMPARE factors in a population’s growth rate

-individuals leave-EXIT (-)

Individuals die (-)

-rate in which individuals are added or removed from a population

Individuals born (+)

-individuals move INTO (+)

Think and Answer: 1PREDICT how the cycle might change for the moose population if the wolves were removed from Isle Royale.

POPULATION LIMITING FACTORSDRAW graphs:

lag phase

exponential growth

carrying capacity

Exponential Population Growth Logistic Population Growth

population growth w/o limiting factors—continues to grow

population growth w/limiting factors—stops growing when reaches carrying capacity

POPULATION LIMITING FACTOR

carrying capacity

EXPONENTIAL GROWTH:• Starts with lag phase• NO limiting factors• NO carrying capacity• J-curve

LOGISTIC GROWTH• Starts with lag phase• Limiting factors• Carrying capacity• S-curve

POPULATION LIMITING FACTOR

CHARACTERISTIC R-strategist K-strategist

size

# of births per cycle

Life span

amount of energy put into raising their young

type of environment

SUMMARIZE the reproductive strategies of r-strategists & k-strategists for ensuring continuation of their species.

many offspring

LARGE

equilibrium at carrying capacityabundant

resources

LONG life span

SMALL

SHORT life span

little amount of energy

1 or few offspring

lot of energy raising young

POPULATION LIMITING FACTORPOPULATION LIMITING FACTOR

POPULATION LIMITING FACTORSIDENTIFY the following organisms reproductive patterns

R K R R

R-strategist / K-strategist

POPULATION LIMITING FACTOR

density-independent

clumped

predation

uniformlimiting factors

growth rate

drought

density

dispersion

ABIOTIC

CONCEPT MAP:

BIOTIC

density-dependent

competition

POPULATION LIMITING FACTOR

Review Questions

•What are three characteristics used to describe populations?

-Spatial distribution-population density-growth rate

Review Questions

•What is the difference between uniform and random distribution?

-Uniform distribution appears equally spaced, and random distributions can have organisms closely spaced in some areas and more distantly spaced in others

Review Questions

• How would you classify a biotic factor, such as food availability that limits its population size?

-it would be a density-dependent factor

Review Questions

• How would you distinguish between the shape of an exponential growth curve and a logistic growth curve?

-Exponential growth curves are J-shaped and logistic growth curves are S-shaped

Review Questions

• Can you describe what is happening to a population in the exponential phase of growth?

-It is growing rapidly

EXITFILL-IN: level of understanding of today’s objective

EXIT: Provide a summary of what you learned today. (17 word minimum)