AP Biology: Population Ecology-Practice Calculations Flashcards
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| 6511953670 | Density | Is the number of individuals per unit area or volume |  | 0 |
| 6511953671 | Dispersion | Is the pattern of spacing among individuals within the boundaries of the population |  | 1 |
| 6511953672 | clumped dispersion | Is one in which individuals aggregate in patches. May be influenced by resource availability and behavior |  | 2 |
| 6511953673 | uniform dispersion | Is one in which individuals are evenly distributed. May be influenced by social interactions such as territoriality |  | 3 |
| 6511953674 | random dispersion | Is one in which the position of each individual is independent of other individuals |  | 4 |
| 6511953675 | life table | Is an age-specific summary of the survival pattern of a population. Is best constructed by following the fate of a cohort |  | 5 |
| 6511953676 | survivorship curve | Is a graphic way of representing the data in a life table |  | 6 |
| 6511953677 | exponential model | population growth in an idealized, unlimited environment |  | 7 |
| 6511953678 | Carrying capacity (K) | Is the maximum population size the environment can support |  | 8 |
| 6511953679 | logistic population growth model | The per capita rate of increase declines as carrying capacity is reached |  | 9 |
| 6511953680 | K-selection (density-dependent) | Selects for life history traits that are sensitive to population density |  | 10 |
| 6511953681 | r-selection (density-independent) | Selects for life history traits that maximize reproduction | | 11 |
| 6511953682 | density-independent populations | Birth rate and death rate do not change with population density | 12 | |
| 6511953683 | density-dependent populations | Birth rates fall and death rates rise with population density | 13 | |
| 6511953684 | Age Structure | used to calculate population size in the future, shown as a diagram that represents multiple age groups |  | 14 |
| 6511961566 | A population of antelopes on an island has a carrying capacity of 750 individuals. The maximum rate of increase is 2 per individual. With a population size of 1750, determine the logistic population growth rate for this given population. dN/dT= rN (K-N/K) | k=750 individuals. r max= 2 N= 1750 dN/dT= ? dN/dT= (2X 1750) (750-1750/750) -4550 (The population has exceeded carrying capacity significantly). | 15 | |
| 6512576756 | A certain population A, is experiencing exponential growth. Population size = 50 Births = 10 Death = 4 A. Calculate the individual growth rate (r). This is also known as the per capita reproduction rate. | r = (B-D)/N = (10-4)/50 = 0.12__or b-m = .2 - .08 = .12_ | 16 | |
| 6512590887 | For the same population (50 people), calculate the population growth rate. (Individuals added to the population in one generation.) | 0.12 x 50 = 6_ | 17 |