Lecture 26 - Assemble

Question 1

Population

Answer 1

group of con-specific individuals, living in the same area, relying on the same resources, influenced by the same environment, and interacting/breeding with on another

Question 2

community

Answer 2

group of interacting populations of different species

Question 3

population dynamics

Answer 3

• > all population experience bith and death
• > immigration and emigration are not universal

Question 4

change in population (N)

Answer 4

N = births + immigration - deaths - emigration

Question 5

describe what happens to a popuation when births are equal, greater than, or less than death

Answer 5

B > D the population is growing

B < D the population is shrinking

B = D the population static

Question 6

describe N on a per capita basis

Answer 6

N = populaiton

b = births

m = deaths

r = per capita rate of population increase

Question 7

what happens when the per capita rate of population increase (r) is greater than, less than, and equal to 0

Answer 7

r > 0 the population is growing

r < 0 the population is shrinking

r = 0 the population is static

Question 8

Logistical growth

Answer 8

growth decreases as population size approaches carrying capacity (K)

Question 9

Carrying capacity

Answer 9

maximum population that can be supported by available resources

Question 10

Allee Effect

Answer 10

reduces repopulation if population size is too small

Question 11

carrying capacity of the earth

Answer 11

• > determined by energy use or ecological footprint

(lant to produce resources and aborb wastes = 1.7 Ha/person)

• > estimated to be 10 - 15 billion