Ecology (population) Flashcards
A population is described what 3 things?
Distribution, density, and size
A group of individuals of the same species in the same area at the same time?
A population
What is the most common distribution?
Clumped
What is the rarest distribution?
Uniform
The best method to measure how many are in a population?
Mark and recapture method
Changes in population size are caused by?
Deaths, births, immigration.
What gender tends to strive better?
Females
Type 1 has what characteristic of death rate?
Death rate in post reproductive years
Type 2 has what characteristic of death rate?
Steady and constant mortality throughout life
Type 3 has what kind of death rate?
High mortality (a lot of deaths) early on but organisms that survive strive.
This type of selected species has late reproduction, few offspring, and invest a lot in offspring.
K-selected
This type of selected species has early reproduction, many offspring, and little parental care.
R selected
Births-deaths=
Change in population
