ecology

Question 1

type one

Answer 1

humans

Question 2

type three

Answer 2

Mosquitos

Question 3

type two

Answer 3

squirrels

Question 4

weeds have

Answer 4

high fecundity and low survivorship

Question 5

Palm trees have

Answer 5

low fecundity and high survivorship

Question 6

low survivorship and high fecundity

Answer 6

“r selected”

Question 7

high survivorship and low fecundity

Answer 7

“k selection”

Question 8

in population lower case letters stand for

Answer 8

per capita

Question 9

as fast as the population can grow in unlimited conditions

Answer 9

intrinsic rate of growth

Question 10

populations rarely grow

Answer 10

at an intrinsic growth rate

Question 11

when would intrinsic growth rate occur?

Answer 11

• after immigration to a new, rich habitat

- after a “catastrope” that reduced population size

Question 12

in gobies

Answer 12

even where there was no predators present the proportion of gobies that survived decreased with dentist

Question 13

song sparrows

Answer 13

laid less eggs when there was a higher density

Question 14

the number of individuals an environment can support

Answer 14

carrying capacity

Question 15

what happens when ‘N’ is close to 0

Answer 15

population grows at an intrinsic rate

Question 16

what happens when N>K

Answer 16

population declines

Question 17

what happens when N=K

Answer 17

population neither grows nor shrinks

Question 18

the relationship between carrying capacity and k selected organisms

Answer 18

organisms that are k selected tend to be near carrying capacity often

Question 19

when a population is stable a net growth rate (R not) should be

Answer 19

1

Question 20

population growth in other populations

Answer 20

migrants

Question 21

extent to which subpopulations cannot interact through migration

Answer 21

population structure

Question 22

fewer barriers means

Answer 22

less population structure

Question 23

more barriers mean

Answer 23

more population structure

Question 24

what happens when a metapopulation has zero migration?

Answer 24

this suggests separate populations not subpopulations

Question 25

replacement rate is approximately

Answer 25

2 children per mother

Question 26

lynx populations

Answer 26

follow hard populations

Question 27

r selected organisms have big

Answer 27

boom and busts cycles

Question 28

stoats are

Answer 28

lemming special specialists

Question 29

snowy owls are

Answer 29

generalists

Question 30

the range of resources an organism uses

Answer 30

niche

Question 31

one species drives the other species locally extinct

Answer 31

competitive exclusion

Question 32

yellow-rumpled warblers

Answer 32

were kept out of the higher parts if trees because of competition

Question 33

which one out competes? balanus or chthamalus?

Answer 33

balanus

Question 34

mandible size in ants

Answer 34

experience character displacement based on the resources available and other species present

Question 35

three spin spike fish

Answer 35

have different spines based in where they live

Question 36

small islands have fewer predators and

Answer 36

smaller plants

Question 37

tree hoppers give ants honeydew. what do ants give tree hopers?

Answer 37

protection… but only when spiders are present

Question 38

species richness

Answer 38

number of species ( golf corse)

Question 39

species diversity

Answer 39

takes into account prevalence

tropical rain forests

Question 40

large islands have large populations that acts as a

Answer 40

buffer (a log won’t fall down and kill off the entire population)

Question 41

the closer an island is to the main island

Answer 41

the more likely it will have immigrants

Question 42

the more species there are

Answer 42

the greater chance one will go extinct, but a lower rate in general

Question 43

small islands are

Answer 43

more probe to extinction

Question 44

one idea for why there is so much biodiversity near the equator?

Answer 44

those areas acted as Refugio during ice ages

Question 45

estimating relatives the relative abundance of dinosaurs we find out than a T-Rex must have been..

Answer 45

hot blooded- to eat enough they must have had to hunt down prey!

Question 46

bears have a — relationship on ants

Answer 46

negative

Question 47

ants tree hoppers answer is

Answer 47

mutualistic

Question 48

tree hopers have a … relationship on their food

Answer 48

negative

Question 49

why is there an overall net decline in net productivity?

Answer 49

• deforestation

- global warming causes droughts

Question 50

completely decayed organic material

Answer 50

humus

Question 51

fertilizers cause

Answer 51

hyper or eutrophication

Question 52

boreal forests have

Answer 52

very deep organic material

Question 53

tropical forest have

Answer 53

thin organic layers

Question 54

dead zones are

Answer 54

anoxic

Question 55

an enormous layer of moss that used to suck in carbon ( acting as a sink) but now it is acting as a carbon source.

Answer 55

peet moss

Question 56

too much carbon in the ocean

Answer 56

makes the water more acidic

Question 57

presence of wolves in Yellowstone

Answer 57

made deer populations shrink, but more importantly changed their behavior

Question 58

cutting down forests causes us to

Answer 58

encounter disease resivours

Question 59

dilution affect

Answer 59

the more species diversity; the lower number of infections

Question 60

rescue affect

Answer 60

higher biodiversity leads to more infections

Question 61

in Asian- pacific countries more species at threat

Answer 61

correlates positively with the number of outbreaks

Question 62

why are cod and crab ranges changing? (getting smaller)

Answer 62

because higher temperture as are causes the amount of O(2) in the water to decrease

Question 63

hybridization is

Answer 63

“a major cause of species extinction”