Multiple Choice -Population Dynamics Flashcards
1
Q
What is the general relation between body mass and population density?
A
By Damuth
population density scales to body mass with a slope of -0.75, implying all species use the same amount of energy, since metabolic rate scales to body mass with a slope of 0.75
D=N/S
negatively correlated
2
Q
What calculation determines the change in population size?
A
total # of people leaving (death/emigration) — total # of people entering the population (birth/immigration)
3
Q
population dynamics
A
the change in a population over time
4
Q
populations most likely to undergo exponential growth
A
- Bacteria with ideal temp and unlimited space
- birth rate > death rate (+)
- populations living in comfortable abiotic environments with unlimited food and shelter
5
Q
populations that don’t undergo exponential growth
A
- birth rate < death rate
- birth rate = death rate
- environmental limitations
- rate of production
6
Q
density dependent factors that affect exponential growth
A
- disease
- competition
- predation
- waste accumulation
