Biodiversity Flashcards

1
Q

What are the four types of diversity in ecosystems

A

genetic diversity
ecosystem diversity
regional diversity
species diversity

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2
Q

Genetic diversity

A

variation of genes within a species

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3
Q

Ecosystem diversity

A

variety of ecological habitats in an ecosystem

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4
Q

Regional diversity

A

variety of landscapes within an ecosystem

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5
Q

Biodiversity

A

the diverse range of organisms, genes, and ecosystems found within the biosphere

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6
Q

What are the factors that affect biodiversity

A

evolution
migration
human impact
exotic invasive species

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7
Q

Macro-evolution

A

evolution of an entire family of organisms in relation to all other organisms

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8
Q

Micro-evolution

A

evolution that occurs within a single population of organisms

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9
Q

What does micro-evolution cause

A

increases or decreases survival rate of organisms

increases biodiversity

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10
Q

Migration

A

movement of organisms from one location to another

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11
Q

What factors affect migration

A

food supply
water supply
climate change
reproduction patterns

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12
Q

What does migration cause

A

temporary or permanent appearance of new organisms in an ecosystem
can lead to loss of native species

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13
Q

Africanized bees are also known as….

A

killer bees

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14
Q

Africanized bees are native to which continent

A

Africa

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15
Q

To where did the killer bees spread

A

south and central America, Mexico, and southwestern US

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16
Q

Are killer bees more likely to swarm than European honey bees

17
Q

Are killer bees dangerous to humans

18
Q

Food chains

A

single pathway from producer to consumer

19
Q

Food web

A

integrated pathways of feeding in an ecosystem

20
Q

What does a loss of an organism in a food web cause

A

can cause decrease or increase of other organisms

21
Q

What does a reintroduction of a species in a food web cause

A

cause the organisms to re-establish the niche or cause competitive exclusion

22
Q

What does the addition of a new species in a food web cause

A

can lead to competitive exclusion

23
Q

An increase in biodiversity causes

A

an increase in ecosystem stability and increase in productivity

24
Q

A decrease in biodiversity causes

A

a decrease in ecosystem stability and decrease in productivity

25
About how many species are lost everyday due to deforestation of rainforests
137
26
About how much of the world's ten million species are located in the rainforest
1/2 of the ten million species
27
Species diversity
variety of organisms within an ecosystem