Diversity and Climate Change Flashcards

1
Q

Local diversity (alpha)

A

number of species in a relatively small area of homogenous habitat, such as a stream

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2
Q

Regional diversity (gamma)

A

the number of species in all the habitats that comprise a large geographic area

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3
Q

Beta diversity

A

the number of species that differ in occurrence between two habitats

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4
Q

Hypothesis 1 of biodiversity

A

glaciers during ice age made habitat less stable and drove back species

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5
Q

Hypothesis 2 of biodiversity

A

equilibrium between creating new species and species going extinct

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6
Q

Processes behind patterns of biodiversity

A

ecological heterogeneity
solar energy
precipitation
water temps in the ocean

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7
Q

More heterogeneity = ??

A

more diversity

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8
Q

Energy-diversity hypothesis

A

a hypothesis that sites with higher amounts of energy are able to support more species

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9
Q

A thicker greenhouse layer means ??

A

more heat retained

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10
Q

Albedo effect

A
  1. ice retreat
  2. local warming
  3. feedback (the cycle repeats)
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