population dynamics

Question 1

pop. abundance patterns represent __________.

Answer 1

moments in time.

Question 2

pop. abundance patterns result from

Answer 2

birth + death, immigration + emigration.

Question 3

what factors affect pop. abundance?

Answer 3

natality, mortality, immigration, emigration.

Question 4

what is the life table

Answer 4

age-specific summary of mortality rates for a pop. (think g o a t). to plot survivorship curve.

Question 5

how to estimate patterns of survival / mortality

Answer 5

1) cohort life table. 2) static life table. 3) age distribution.

Question 6

what would measuring growth rings show?

Answer 6

the age of an organism (shell, tree, horns). also can measure wear + tear on teeths.

Question 7

what does net reproductive rate assume?

Answer 7

survival rates + fecundity for each age class are constant through observation.

Question 8

what are some additional parameters affecting abundance?

Answer 8

age distribution. genetic composition. spatial distribution.

Question 9

what does age distribution show?

Answer 9

successful / unsuccessful reproduction. high / low survival. effects of env. variability.

Question 10

pop. growth/decline may be due to

Answer 10

natality/mortality, or immigration/emigration.

Question 11

favorable conditions in pop. growth (N/M)

Answer 11

abundant resources leads to “baby boom”

Question 12

favorable conditions in pop. growth (I/E)

Answer 12

abundant resources attracts immigrant pops.

Question 13

unfavorable conditions in pop. growth (N/M)

Answer 13

lack of resources leads to decreased reproductive success

Question 14

unfavorable conditions in pop. growth (I/E)

Answer 14

lack of resources leads to emigration to other pops.

Question 15

changes in abundance are due to:

Answer 15

dispersal, not reproduction