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APES > ch 6 > Flashcards

ch 6 Flashcards

0
Q

constantly changing

A

dynamic

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1
Q

division of a limiting resource based on differences in species behavior or morphology

A

resource partitioning

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2
Q

organisms that lay eggs inside other organisms

A

parasitoids

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3
Q

occurs on surfaces where soil is present but plants have been removed

A

secondary succession

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4
Q

how individuals within a population are distributed with respect to one another

A

population distribution

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5
Q

species whose survival rate declines early in life

A

type 3 survival curve

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6
Q

communities in late-stage succession with more complex species; succession ends

A

climax stage

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7
Q

populations max potential for growth (resources are not limited)

A

intrinsic growth rate (r)

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8
Q

organism parasite lives in/on

A

host

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9
Q

closely grouped distribution of individuals within a population

A

clumped distribution

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10
Q

behavioral, morphological, chemical, mimicry

A

defenses against predation

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11
Q

limit of how much a ecosystem can sustain

A

carrying capacity (k)

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12
Q

predictable replacement of one species by another over time

A

ecological succession

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13
Q

ratio males-females

A

sex ratio

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14
Q

competition
predation
mutualism
commensalism

A

categories of species interactions

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15
Q

species with high intrinsic growth rates whose abundance fluctuates with overshoots and dieoffs

A

r-selected species

16
Q

competition

A

struggle between individuals to obtain a limiting resource

17
Q

predator-prey population oscillation

A

more prey= more predator
more predator=less prey
less prey= less predator
repeat process

18
Q

mutualism

A

interaction between species which both increase species fitness

19
Q

keystone species

A

species that play a crucial role in a community

20
Q

type 2 survival curve

A

species survival rate stays constant

21
Q

density-dependent factors

A

factors that influence species fitness or population size

22
Q

symbiotic relationship

A

relationship of 2 species that live in close association

23
Q

metapopulations

A

spatially distinct populations convector by occasional movement between them which helps overall persistence

24
Q

predator-mediated competition

A

organism who reduces abundance of superior competitor and allows inferior competitors to compete

25
Q

competitive exclusion principal

A

2 species cannot exist when competing for the same limiting resource

26
Q

corridor

A

strips of habitats that allows individuals to traverse between populations

27
Q

species reduce competition by evolving in body and shape

A

morphological resource partitioning

28
Q

divisions of populations by natural or human defined boundaries based on population density

A

management zone

29
Q

keystone species are…

A

ecosystem engineers

30
Q

factors that influence individuals fitness probability not related to population size

A

density-independent factors

31
Q

organisms who
rarely kill their prey
consume only a fraction of their prey
live on the organism

A

parasites

32
Q

species with low intrinsic growth rates whose abundance stays near carrying capacity

A

k-selected species

33
Q

species whose survival rate declines late in life

A

type 1 survival curve

34
Q

mathematical equations used to predict population size

A

population growth models

35
Q

shape made by exponential growth

A

J

36
Q

habitats larger in size and closer to species leads to more colonization, less extinction, and more speciation

A

theory of island biogeography

37
Q

species reduce competition by utilizing same resource in different habitats

A

spatial resource partitioning

38
Q

die off

A

rapid decline in population

APES (2 decks)

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