2.2 Flashcards
What is the population trend is b+i>d+e?
Growing
What is the population trend is b+i=d+e?
Steady
What is the population trend is b+i<d+e?
Declining
Where is the peak population on a graph with birth and death rate?
When the death rate equals the birth rate.
What’s the equation for exponential growth?
dN/dt=rN
What’s the equation for logistic growth?
dN/dt=rN(K-N/K)
What does r equal?
Per capita rate of growth
What does N equal?
Population size
What does dN/dt equal?
Change in size / change in time
What does K equal?
Carrying capacity
What does N0 equal?
Starting population
What does t equal?
Time
What are the 2 limiting factors?
Density(dependent) and Density(independent)
Which limiting factor impacts dense populations and is normally biotic?
Density(dependent)
Which limiting factor impacts all populations and is normally abiotic?
Density(independent)
