How Changes Occur In Ecosystems 9 Flashcards

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1
Q

What’s ecological succession?

A

Refers to changes in the biotic chatacteristics

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2
Q

Where would primary succession take place?

A

Bare rock

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3
Q

Stages of succession for primary?

A

Wind carries spores, weathering, pioneer species alter abiotic and biotic features, animals and plants appear

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4
Q

What is secondary succession?

A

Major disturbance in an area that already had soil

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5
Q

Similarities and differences between primary and secondary succession

A

Similarities: both create mature communities, plants and animals grow

Differences: grow at different times, different features at stage 1

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6
Q

What is a pioneer species?

A

They alter abiotic and biotic environment

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7
Q

What is a climax community and what is another name for it?

A

A finished succession to can be unchanged for years but changes can still apply

Another name:
Mature community

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8
Q

What is a natural selection?

A

Process where individuals with advantages are better to reproduce and pass traits

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9
Q

What’s an adaptive radiation?

A

Describes the type of natural selection where many are different than one

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10
Q

How does the 13 types of finches have a different beak?

A

Thrive in own niche and not compete

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11
Q

How would a species get extinct?

A

Invasive species and human activity

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12
Q

What’s an invasive species?

A

Non native species that negatively impact native species

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13
Q

What is another name for foreign species?

A

Introduced species, invasive species, non native species

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14
Q

What is a foreign species?

A

A species that is introduced to a new area accidentally

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15
Q

What can happen when a foreign species is introduced to an ecosystem?

A

They can take advantage over their new habitat and compete for resources

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16
Q

What is a native species?

A

The species who originally lived in that area

17
Q

Why is scotch broom so difficult to control?

A

When removing the whole tree the seeds remain

18
Q

What are benefits of controlled burning?

A

Tree planting, killing diseases

19
Q

What are the negative impacts of agriculture?

A

Air pollution, less biodiversity, and (POP)

20
Q

What are the effects of deforestation?

A

Never replanted, reduce biodiversity, crops vulnerable to diseases

21
Q

What’s habitat loss?

A

Use of land resources from humans

22
Q

What is habitat fragmentation?

A

Splitting habitats to smaller ones

23
Q

What is resource exploitation?

A

Resource use, Humans depend on it for food and shelter

24
Q

What is overexploitation?

A

Extractions of resources until gone

25
Q

What is aeration

A

Remove plugs of soil and reduce runoff

26
Q

What is soil degration?

A

Moving wind and water erode topsoil

27
Q

What is soil compaction

A

Soil pressed together, reducing pore space

28
Q

What is contamination?

A

Introduction of harmful chemicals or micro organisms into the environment