Exam 3

Question 1

ecological community

Answer 1

association of species that co-occur in the same location at the same time

Question 2

mutalism

Answer 2

++

Question 3

antagonism

Answer 3

+-

Question 4

competition

Answer 4

• -

Question 5

commensalism

Answer 5

0 +

Question 6

amenalism

Answer 6

0 -

Question 7

neutralism

Answer 7

0 0

Question 8

competition defined

Answer 8

interaction between organism or species in which BOTH are HARMED

Question 9

how is harm defined and what does it mean

Answer 9

fitness

the ability to produce offspring

Question 10

interference competition

Answer 10

occurs directly bt indiv via aggression

Question 11

exploitation competition

Answer 11

occurs indirectly through common limiting resource which acts as an intermediate

Question 12

symmetric competition

Answer 12

each species experiences a roughly equal decrease in fitness

Question 13

assymetric competition

Answer 13

one species suffers a greater fitness decline than another

Question 14

intraspecific competition

Answer 14

members of the SAME species compete for limited resource

Question 15

interspecific competition

Answer 15

individuals of diff species compete for the same resource

Question 16

what does the graph look like for intraspecific competition

Answer 16

the final density low while biomass is high

initial density is high while biomass is low

Question 17

isocline

Answer 17

system will run out of resources if there’s a certain # of each species

Question 18

when k2 is above k1/a12 on the y axis, what does the graph look like

Answer 18

the species can coexist but it is unstable

Question 19

when k1/a12 is above k2 on the y axis, what does the graph look like

Answer 19

species can coexist in a very stable manner

Question 20

coexisting only happens when __________ competition is larger than ________ competition

Answer 20

intraspecies

interspecies

Question 21

how does how a species change a niche

Answer 21

nest size
change in food
wanting to avoid competition
changing behavior

Question 22

microhabitat

Answer 22

tiny niche within a larger environment to reduce competition

Question 23

what is one example of antagonism

Answer 23

exploitative explosion

Question 24

parasites

Answer 24

lives on/in another organism causing it some harm

Question 25

parasitoid

Answer 25

lives in close association w/ its host and at host's expense and sooner or later KILLS host

Question 26

what group are of the golden children of ecology

Answer 26

herbivores

Question 27

what is the predation equation for prey

Answer 27

dV/dt=rV-aVP

Question 28

what is the predation equation for predators

Answer 28

dP/dt=BVP-qP

Question 29

why don't we see perfect predator and prey curves in nature

Answer 29

lack of food for prey lots of predators eat the the same prey parasites can make both sick

Question 30

mutualism

Answer 30

interaction bt individual that benefits both partners

Question 31

obligate mutualism

Answer 31

the organisms cannot survive without each other

Question 32

facultative mutualism

Answer 32

each organism can survive independent but are benefited to remain together

Question 33

is mutualism messy or perfect

Answer 33

MESSY BIHHHHH

Question 34

context dependent mutualism

Answer 34

when the situation is bad, organisms will work together but when things are good, they'll break the relationship

Question 35

animal guild

Answer 35

group of species that exploits the SAME KINDS OF RESOURCES in comparable ways

Question 36

plant life-form

Answer 36

basis of their structure and function | grass brush forest

Question 37

what is community structure

Answer 37

``` # of species abundance of species type of species ```

Question 38

what two factors is biodiversity affected by

Answer 38

richness and evenness

Question 39

how do you determine the diversity of an area

Answer 39

shannon diversity index

Question 40

what is the x axis of the Rank Abundance Curve

Answer 40

abundance rank

Question 41

what is the y axis of the Rank Abundance Curve

Answer 41

relative abundance

Question 42

how do you calculate relative abundance

Answer 42

abundance of one species/abundance of community