quiz 4 Ch 10 Flashcards Preview

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Flashcards in quiz 4 Ch 10 Deck (28)
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1
Q

dispersal

A

how adults end up where they are.

can live in more and 1 habitat in their life

2
Q

organisms dispersal stage

A

mobile life

3
Q

dispersal availability

A

population dynamics due to individuals moving

4
Q

why is dispersal availability important

A

conservation efforts

5
Q

case study: africanized honeybees

A

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

6
Q

case study: collared doves

hypothesis

A

individual variation in dispersal

7
Q

case study: collared doves

observations

A

dispersed from turkey into Europe.

no human influence and happened in small jumps

8
Q

case study: plant dispersion and climate change

A

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.

9
Q

case study: dispersal in response to changing food supply

hypothesis

A

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

10
Q

case study: dispersal in response to changing food supply

results

A

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

11
Q

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

A

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

12
Q

colonization cycle

A

downstream and upstream dispersal to compensate for drift

13
Q

stream dwellers adaptations to maintain position

A

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

14
Q

metapopulations

A

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

15
Q

methods of estimating patterns of survival

A

cohort life table
static life table
age distribution

16
Q

cohort life table

A

individuals born at the same time and keep birth records

17
Q

static life table

A

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

18
Q

age distribution

A
calculate different proportions of individuals in age class
assumes difference from mortality
19
Q

case study: high survival among young of all sheep skulls

A
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)
20
Q

example of type 1 survivorship curve ( not done editing)

A

Dall sheep

21
Q

example of type 2 survivorship curve

A

American robin

  • constant probability
  • die at younger age than older
22
Q

example of type 3 survivorship curve

A

sea turtle

  • high death rate in early life
  • lot of offspring w/ no parental care
  • entended lives
23
Q

age distribution of population

A

reflects history. of survival, reproduction, and growth potential

24
Q

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

A

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

25
Q

**case study: dynamic population in variable climate

A

Galapagos finch populations would decline in times of drought

26
Q

birthrate

A

number of young born per female

27
Q

fecundity schedule

A

birth rate by age class

28
Q

R0>1.0

A

population is growing.

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