lecture 11 Flashcards
population
a group of individuals of the same species
population ecology
how and why the number of individuals in a population can change overtime
what is the range of a pppulation
the geographic distribution
what two factors determine range
Abiotic and biotic factors
What are three types of arrangements?
Random distribution
uniform distribution
Clumped distribution
What arrangement do humans have?
clumped distribution
What does demography mean?
The study of factors that determine the size and structure of a population
What four processes determine the number of individuals in a population and how
immigration
Births
Emigration
Deaths
What are life tables?
A table mapping out the probability of an individual, the probability of it will survive and reproduce
What are three types of survivorship?
type one
Type two
Type three
density independent factors
Alter birth rates, and death rates
Density dependent factors
Limit how big a population is
Age structure trends
Varies location
How large is current human population?
almost 8 billion
how can population ecology help conserve biodiversity?
Design management strategies for preventing species from becoming endangered or extinct
What does community mean?
All different species or populations interacting in an area
what are the four most common types of species interactions?
Commensalism
Competition
Consumption
Mutualism
Fundamental niche
Theoretical
Realized niche
Actual
competition over generations can lead to what
Niche differentiation, and character displacement
What are three types of consumption?
herbivory
predation
parasitism
Integrated pest management
any strategy to maximize agriculture while reducing insects and harmful compounds
what are the four key attributes of community structure?
Number of species
Some of interactions
Relative abundance
Physical attributes
what happens after a servers disturbance
succession
