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Unit 1:
Ch. 1
Ch. 2
Ch. 3
Interlude A
Unit 2:
Ch. 4
Ch. 5
Ch. 6
Ch. 7
Ch. 8
Ch. 9
Interlude B
Unit 3:
Ch. 10
Ch. 11
Ch. 12
Ch. 13
Ch. 14
Ch. 15
Interlude C
Unit 4:
Ch. 16
Ch. 17
Ch. 18
Ch. 19
Interlude D
Unit 5:
Ch. 20
Ch. 21
Ch. 22
Ch. 23
Ch. 24
Ch. 25
Ch. 26
Ch. 27
Ch. 28
Ch. 29
Ch. 30
Interlude E
Unit 6:
Ch. 31
Ch. 32
Interlude F
Unit 7:
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Ch. 35
Ch. 36
Ch. 37
Ch. 38
Interlude G

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Positive Interaction Can Increase Biodiversity

Although positive interactions are now known to be so common that many ecologists dismiss them as obvious, surprisingly little is known about their communitywide consequences, particularly how they affect species diversity.

» Read the full article

Active Reading Questions

  1. fiogf49gjkf0d
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    Which of the following are examples of positive species interactions?
    a) pollinator mutualisms
    b) seed dispersal mutualisms
    c) behavior mutualisms
    d) all of the above
  2. fiogf49gjkf0d
    fiogf49gjkf0d
    In a community, if two species interact and each has a negative effect on the other, we say the species are in ____________.
    a) exclusion
    b) exploitation
    c) competition
    d) character displacement
  3. fiogf49gjkf0d
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    Compare and contrast mutualism and competition.
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