Flashcards in Lecture 31-Population Ecology Deck (44)
What is population ecology?
The study of populations in relation to their environment
A group of individuals of a single species living in the same general area.
Population ecology studies how biotic and abiotic factor influence what?
Density, distribution, size, and age structures of populations
The number of individuals per unit area or volume.
Population density is typically __________.
Population dynamics deal with __________ and __________ within a population.
Birth and immigration
Death and emigration
Addition = population __________.
Removal = population __________.
What is population size affected by?
Birth, death, immigration, and emigration
Change in population size (N) during time interval (t) =
(Births + immigration) - (Deaths + emigration)
Average # per individual.
Per capita birth rate equation:
B = bN
Per capita death rate equation:
D = mN
Per capita rate of increase equation:
r = b - m
Different populations exhibit different __________ __________.
The pattern of spacing among individuals within the boundaries of the population.
3 types of dispersion?
Clumped, uniform, and random
Aggregated in patches.
Evenly distributed; result of antagonistic social interactions (territoriality).
Position of individuals independent of others.
Most common dispersion pattern:
The maximum population size that a particular environment can sustain.
Carrying capacity (K)
What can carrying capacity be shaped by?
Energy, shelter, refuge from predators, nutrient availability, water, and suitable nesting sites
The study of vital statistics of populations and how they can change over time.
The data used in demography is captured through:
Census, mark-and-recapture, and sampling
Age-specific summaries of survival patterns of populations.
Shows rate of survivorship for a cohort/population.