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BIO 150.01 > M4: Community Ecology - Species Interaction > Flashcards

M4: Community Ecology - Species Interaction Flashcards

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Biology 101 flashcards
1
Q

What type of species interaction wherein both species are harmed?

A

Competition

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2
Q

What type of species interaction wherein both species benefits?

A

Mutualism

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3
Q

What type of species interaction wherein one benefits and the other is harmed?

A

Predation or Parasitism

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4
Q

What type of species interaction wherein one benefits and the other is neutral?

A

Commensalism

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5
Q

What type of species interaction wherein one is harmed and the other is neutral?

A

Amensalism

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6
Q

What type of species interaction wherein both species are unaffected?

A

Neutralism

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7
Q

What is the chemical release that kills/harms one species?

A

Allelopathy

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8
Q

What competitive interaction where it is a general classification for direct interactions between competing organisms?

A

Interference Competition

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9
Q

What competitive interaction where it has limited supply of resources?

A

Resource Competition

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10
Q

What competitive interaction where it is a competition between members of own species?

A

Intraspecific Competition

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11
Q

What competitive interaction where it is a competition between members of two or more species?

A

Interspecific Competition

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12
Q

What competitive interaction does Realized Niche implies?

A

Intraspecific Competition

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13
Q

It is where the population decreases with growing individuals?

A

Self-thinning

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14
Q

As individual grows, resources required grows leading to what kind of competition?

A

Intraspecific Competition

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15
Q

What is the relationship between density of individuals and their biomass?

A

Indirectly Proportional

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16
Q

What is the self-thinning rule?

A

Slope of line of - 3/2

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17
Q

What does G.F. Clause proposed about Competitive Exclusion Principle?

A

No two species with identical niches cannot coexist indefinitely. [One species are more effective competitor]

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18
Q

What is the Lokta-Volterra Model?

A

dN1/dt = r1N1(K1-N1-a12N2/K1)
and
dN2/dt = r2N2(K2-N2-a21N1/K2)

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19
Q

What does “a12” mean?

A

Effect of individual species of Species 1 on Species 2

20
Q

What does “a21” mean?

A

Effect of individual species of Species 2 on Species 1

21
Q

a12 > 1

A

Competition effect of Species 2 is greater than species 1

22
Q

a12 < 1

A

Competition effect of Species 2 is less than species 1

23
Q

a12 = 1

A

Competition effect of Species 2 is equal to species 1

24
Q

What does N# represent?

A

Intraspecific Competition

25
Q

What does K# represent?

A

Carrying Capacity

26
Q

What does “a12N2” represent?

A

Interspecific Competition

27
Q

What is the relationship between two competing populations?

A

Inversely Proportional

28
Q

What does zero-growth isocline implies?

A

Same curves of both population species

29
Q

What is the purpose of isoclines?

A

To predict which competitor would win.

30
Q

What does below the isocline implies?

A

Population grows

31
Q

What does above the isocline implies?

A

Population declines

32
Q

What forms when
dN1/dt = 0 and dN2/dt = 0?

A

Zero Net Growth Isocline (ZNGI)

33
Q

Lokta Volterra Model:
Species 1 only; Species 2 absent
Species 2 only; Species 1 absent

A

N1 = K1
N2 = K1/a12

34
Q

Lokta Volterra Model:
Species 2 only; Species 1 absent
Species 1 only; Species 2 absent

A

N2 = K2
N1 = K2/a21

35
Q

Species 1 ZNGI above Species 2 ZNGI

A

Species 2 excluded

36
Q

Species 2 ZNGI above Species 1 ZNGI

A

Species 1 excluded

37
Q

Species 1 ZNGI crosses Species 2 ZNGI

A

Coexistence

38
Q

What will happen if there are changes that moves Isoclines?

A

Exclusion

39
Q

What does competitions restricts species to?

A

Realized Niche

40
Q

What does strong competitions induce?

A

Evolutionary Response - New species from the fundamental niche and Competitve Exclusion

41
Q

What is two species exhibiting starkly different traits where they occur together vs where they occur in separate geographic distribution?

A

Character Displacement and Geographic Distribution

42
Q

What are species that are isolated from each other by a clear visible barrier?

A

Allopatry

43
Q

What are species occurring in the same geographic region/area?

A

Sympatric

44
Q

What will be present between two species?

A

Competition and Exclusion

45
Q

What happens when species with inferior qualities are excluded in the community from other species?

A

Competitive Exclusion

46
Q

As population grows, there is increase in size and resource requirements. If population decreases, what happens to density?

A

Decreases

BIO 150.01 (13 decks)

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