Biodiversity Flashcards

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1
Q

Genetic biodiversity

A

differences in dna among individuals

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2
Q

species biodiversity

A

Variety of species in a given area

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3
Q

Ecological diversity

A

Variations in ecosystems in a given area

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4
Q

why does biodiversity increase towards the equator

A

solar energy

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5
Q

what is provisioning

A

The resources/ goods humans extract from ecosystems (water, wood, oils, natural gas, ect.)

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6
Q

what is regulating

A

Benefits that are obtained from the regulations of ecosystem processes (pollination, decomposition, water purification, erosion)

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7
Q

what is cultural disruptions

A

Benefits people gain from the ecosystem (spiritual experiences, tourism, walking, cycling, in the woods or parks)

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8
Q

what is supporting

A

The most basic needs and resources that an ecosystem needs to function (water, air, carbon, cycling nutrients) nothing would be possible without it

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9
Q

resistance

A

to be able to resist change without losing function

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10
Q

Resilience

A

to be able to bounce back after change

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11
Q

adaptation

A

change in a population due to environmental pressure

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12
Q

Natural selection

A

survival of the fittest

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13
Q

Artificial selection

A

(humans add or take away traits we like)(farming

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14
Q

Genetic drift

A

(change in gene frequencies because of declines of population or isolation

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15
Q

Gene flow

A

change in genetics because of populations leaving and joining

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16
Q

Migration

A

populations move places to get rid of the pressures of where they are from

17
Q

Extinction

A

organisms who can’t survive due to change die

18
Q

Primary succession

A

when a new patch of land is created or exposed for the first time, trying to reach a climax community, bare rocks get exposed and organisms can colonize for the first time - environment without a previous life

19
Q

Secondary succession

A

had a previous life but had a disturbance (fire, flood, volcano) and it causes it to start over again

20
Q

Generalists

A

broad range of habitat, food, environmental conditions (can tolerate change)

21
Q

Specialists

A

very specific range of habitat, food, environmental conditions (can’t really tolerate change well)

22
Q

Causes of biodiversity loss

A

Habitat loss - habitat fragmentation (parts are destroyed)(change and destruction)
Invasive species - out compete for food resources
Pollution - chemicals kill off species
Population (human population)- hunting, humans taking resources)
Overharvesting- takes to much

23
Q

Habitat loss

A

habitat fragmentation (parts are destroyed)(change and destruction)

24
Q

Invasive species

A

out compete for food resources

25
Q

Pollution

A

chemicals kill off species

26
Q

Population

A

(human population)- hunting, humans taking resources)

27
Q

Overharvesting

A

takes to much

28
Q

Episodic-

A

random episodes

29
Q

Periodic

A

regular intervals (seasons changing)

30
Q

Random-

A

completely random times (meteor hitting earth)