quiz 4 Ch 10

Question 1

dispersal

Answer 1

how adults end up where they are.

can live in more and 1 habitat in their life

Question 2

organisms dispersal stage

Answer 2

mobile life

Question 3

dispersal availability

Answer 3

population dynamics due to individuals moving

Question 4

why is dispersal availability important

Answer 4

conservation efforts

Question 5

case study: africanized honeybees

Answer 5

locally adapted subspecies that evolved in Africa and Europe.
dispersed faster in South America, Mexico, and Central America than Europe

Question 6

case study: collared doves

hypothesis

Answer 6

individual variation in dispersal

Question 7

case study: collared doves

observations

Answer 7

dispersed from turkey into Europe.

no human influence and happened in small jumps

Question 8

case study: plant dispersion and climate change

Answer 8

pollen in lake sediments which lead to believe that Maple and Hemlock trees spread north after the glacier retreat.

found that both trees had diff dispersal abilities, the maple dispersed faster.

Question 9

case study: dispersal in response to changing food supply

hypothesis

Answer 9

predators (kestrel and owl) disperse to areas with more food (voles)

Question 10

case study: dispersal in response to changing food supply

results

Answer 10

when prey density increases so does the predator density

marked 217 Kestrels but there was a low recapture rate which could be due to them moving in and out of the area

Question 11

case study: dispersal in rivers and streams (need to keep editing)

Answer 11

muller saw that in rivers, organisms are washed downstream in spates. but the population can be maintained by dynamic interplay of colonization cycle

Question 12

colonization cycle

Answer 12

downstream and upstream dispersal to compensate for drift

Question 13

stream dwellers adaptations to maintain position

Answer 13

streamline bodies, being bottom dwellers, and adhesion to a surface.

Question 14

metapopulations

Answer 14

group of subpopulations living on patches of habitat connected by exchange of individuals

Question 15

methods of estimating patterns of survival

Answer 15

cohort life table
static life table
age distribution

Question 16

cohort life table

Answer 16

individuals born at the same time and keep birth records

Question 17

static life table

Answer 17

individuals born at different times and record age of DEATH of individuals

Question 18

age distribution

Answer 18

calculate different proportions of individuals in age class
assumes difference from mortality

Question 19

case study: high survival among young of all sheep skulls

Answer 19

assumed proportion skulls in each age class represented typical proportions of indiv dying at that age.
created a survivorship curve showing bi-modal mortality (<1 yr and 9-13 yr had high mortality)

Question 20

example of type 1 survivorship curve ( not done editing)

Answer 20

Dall sheep

Question 21

example of type 2 survivorship curve

Answer 21

American robin

• constant probability
• die at younger age than older

Question 22

example of type 3 survivorship curve

Answer 22

sea turtle

• high death rate in early life
• lot of offspring w/ no parental care
• entended lives

Question 23

age distribution of population

Answer 23

reflects history. of survival, reproduction, and growth potential

Question 24

case study: age distribution in white oak vs rio grande cottonwood population

Answer 24

look at age distribution btwn age and trunk diameter

white oak: young trees replaced dying old trees

rio grande cottonwood: old trees could not be replaced due to no floods

Question 25

**case study: dynamic population in variable climate

Answer 25

Galapagos finch populations would decline in times of drought

Question 26

birthrate

Answer 26

number of young born per female

Question 27

fecundity schedule

Answer 27

birth rate by age class

Question 28

R0>1.0

Answer 28

population is growing.

with non-overlapping generations leading to an easily estimate growth rate