Chapter 44 - Population Ecology Flashcards
A ____ consists of all the individuals of a given species that live and reproduce in a particular place at a particular time.
population
The maximum number of individuals of a given population the environment can support is the environment’s ____ for that population.
carrying capacity
When a population is small relative to its carrying capacity, its growth will be:
exponential
____ is the proportion of individuals of an initial cohort that survives to each successive age or stage of the lifecycle.
Survivorship
With density-dependent growth, as a population approaches its carrying capacity, its growth rate:
decreases
Factors such as resources and predation are called
density-dependent factors
factors that influence population size without regard for the
population’s density.
density-independent factors
the number of individuals within each age group of the population studied.
age structure
the study of the size, structure, and distribution of populations over time and includes changes in response to birth, aging, migration, and death.
Demography
a group defined as the individuals born at a given
time, and we can trace their survival as they age.
cohort
The proportion of individuals from the initial cohort that
survive to each successive stage of the life cycle is called
survivorship
species produce large numbers of offspring but provide few resources for their support. (ex: fish)
r-Strategist
species produce relatively few young but invest considerable
resources into their support. (ex: humans)
K-Strategist
The typical pattern of resource investment in each stage of a given species’ lifetime is called
its life history
a large population made up of smaller populations linked by occasional movements of individuals between them.
metapopulation
