list the factors that contribute to a high population density vs a low population density
AFFECTS HIGH POP.
- birth
- immigration
AFFECTS LOW POP.
- Death (mortality )
- Emigration
Key Terms
list the factors that contribute to a high population density vs a low population density
AFFECTS HIGH POP.
- birth
- immigration
AFFECTS LOW POP.
- Death (mortality )
- Emigration
explain the difference between logistic and exponential population growth
exponential growth grows without limit- ex. human population
logistic populations grow ...
sketch and label an example of the different types of survivorship curves. describe an example of each one.
Type 1: late loss, heavy parental care, like humans (many survive until old age)
Type 2...
explain the three types of dispersion patterns
Random: completely random (
Uniform/even: uniform and even
Clumped: clumped- animals that live in packs
what are specific examples of each type of limiting factor?( density dependent and density independent facotrs)
density-dependent- competition, predation, parasitism, disease
density-independent- wea...
define population
a group of organisms of the same species living in the same place
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| Term | Definition |
|---|---|
list the factors that contribute to a high population density vs a low population density | AFFECTS HIGH POP. |
explain the difference between logistic and exponential population growth | exponential growth grows without limit- ex. human population logistic populations grow quickly at first then level off (at the carrying capacity, the theoretical maximum population that a given environment could support) |
sketch and label an example of the different types of survivorship curves. describe an example of each one. | Type 1: late loss, heavy parental care, like humans (many survive until old age) Type 2: Constant loss where mortality isn’t affected by age, like some birds or rodents. graoh looks like a downwards diagonal line Type 3: early loss, with lots of offspring, but after making it past childhood there is less death. (opposite of type 1) |
explain the three types of dispersion patterns | Random: completely random ( |
what are specific examples of each type of limiting factor?( density dependent and density independent facotrs) | density-dependent- competition, predation, parasitism, disease density-independent- weather changes, pollution, natural disasters |
define population | a group of organisms of the same species living in the same place |
define population density | measures the number of individual organisms living in a defined zone |
define survivorship curve | graphic representation of mortality patterns showing the number of individuals in a population that can be expected to survive to any specific age |
define exponential growth | population grows without limit |
define logistic growth | population grows quickly at first and then levels off |
define carrying capacity | the theoretical maximum population that a given environment could support |
define limiting factors | aspects fo the enviorment that limit the size a population can reach |
define biotic | living |
define abiotic | nonliving |
define density-dependent factors | density-dependent limiting factors have a bigger impact on more dense populations |
define density-independent | density- independent limiting favortors regulate population growth regardless of its size or density- weather changes pollution, natural disasters |