population dynamics sol bio 9a. bio sol: 9a the student will investigate and understand dynamic...
TRANSCRIPT
![Page 1: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/1.jpg)
Population Dynamics
SOL BIO 9a
![Page 2: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/2.jpg)
BIO SOL: 9a
The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems.
Key concepts include:
• interactions within and among populations including carrying capacities, limiting factors, and growth curves;
![Page 3: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/3.jpg)
Population Dynamics
Population: all the individuals of a species that live together in an area
Demography: the statistical study of populations, make predictions about how a population will change
![Page 4: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/4.jpg)
Population Dynamics
Three Key Features of Populations
•Size
•Density
•Dispersion
• (clumped, even/uniform, random)
![Page 5: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/5.jpg)
Three Key Features of Populations
1. Size: number of individuals in an area
![Page 6: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/6.jpg)
Growth Rate: Birth Rate (natality) - Death Rate (mortality)
How many individuals are born vs. how many die
Birth rate (b) − death rate (d) = rate of natural increase (r).
Three Key Features of Populations
![Page 7: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/7.jpg)
PRE-REPRODUCTIVE
REPRODUCTIVE
POST-REPRODUCTIVE
![Page 8: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/8.jpg)
Population of a Stable Country
![Page 9: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/9.jpg)
![Page 10: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/10.jpg)
You decide!
![Page 11: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/11.jpg)
Three Key Features of Populations
2. Density: measurement of population per unit area or unit volume
Formula: Dp= N
Pop. Density = # of individuals ÷ unit of space
S
![Page 12: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/12.jpg)
![Page 13: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/13.jpg)
1. Immigration- movement of individuals into a population
2. Emigration- movement of individuals out of a population
4 Factors that affect density
![Page 14: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/14.jpg)
4 Factors that affect density
3. Density-dependent factors- Biotic factors in the environment that have an increasing effect as population size increases
Ex. disease
competition
parasites
![Page 15: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/15.jpg)
4. Density-independent factors- Abiotic factors in the environment that affect populations regardless of their density
Ex. temperature
storms
habitat destruction
drought
4 Factors that affect density
![Page 16: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/16.jpg)
Immigration
Emigration
Natality MortalityPopulation+
+
-
-
Factors That Affect Future Population Growth
![Page 17: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/17.jpg)
Three Key Features of Populations
3. Dispersion:describes their spacing relative to each other
• clumped
• even or uniform
• random
![Page 18: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/18.jpg)
clumped
even (uniform)
random
![Page 19: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/19.jpg)
Population Dispersion
![Page 20: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/20.jpg)
Other factors that affect population growth
Limiting factor- any biotic or abiotic factor that restricts the existence of organisms in a specific environment. EX.- Amount of water
Amount of foodTemperature
![Page 21: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/21.jpg)
Many organisms
present
Few organisms present
Few organisms present
None None
Limiting Factor- Zone of Tolerance
![Page 22: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/22.jpg)
Carrying Capacity- the maximum population size that can be supported by the available resources
There can only be as many organisms as the environmental resources can support
Other factors that affect population growth
![Page 23: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/23.jpg)
Carrying Capacity
Carrying Capacity (k)
Nu
m
b
e
r
Time
J-shaped curve (exponential growth)
S-shaped curve (logistic growth)
![Page 24: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/24.jpg)
![Page 25: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/25.jpg)
![Page 26: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/26.jpg)
![Page 27: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/27.jpg)
2 Life History Patterns
1. R Strategists short life span small body size reproduce quickly have many young little parental care Ex: cockroaches,
weeds, bacteria
![Page 28: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/28.jpg)
2 Life History Patterns
2. K Strategists long life span large body size reproduce slowly have few young provides parental
care Ex: humans,
elephants
![Page 29: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/29.jpg)
Human Population Growth
![Page 30: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/30.jpg)
![Page 31: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/31.jpg)
Human Population Growth
![Page 32: Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems](https://reader036.vdocuments.us/reader036/viewer/2022081603/56649e695503460f94b66515/html5/thumbnails/32.jpg)
Time unit Births DeathsNatural
increase
Year 130,013,274 56,130,242
73,883,032
Month 10,834,440 4,677,520 6,156,919
Day 356,201 153,781
202,419
Hour 14,842 6,408 8,434
Minute 247
107 141
Second 4.1
1.8 2.3