Conbio 2 Flashcards

(14 cards)

0
Q

Two processes of habitat loss

A

Habitat alteration

Habitat loss

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1
Q

Habitat loss

A

Most impacts have been bad for animals.

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2
Q

Habitat degration

A

Roads fences and buildings.

2% of the world. But effects 20%

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3
Q

Ways of degration

A

Soil erosion
Suppressed fire
Water use
Dams

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4
Q

Process of fragmentation

A

Dissection
Perforation
Fragmentation
Attrition

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5
Q

Over exploitation

A

Worse today than ever. Especially for aquatic species.

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6
Q

Types of exploitation

A
Commercial exploitation
Subsistence exploitation 
Recreational exploitation
Incidental exploitation
Indirect exploitation
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7
Q

Who started global warming

A

Margaret Thatcher who was the prime minister in the uk from 1979-1990

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8
Q

Global warming in last 20 years

A

Temp has not changed in 18 years so it’s due to natural causes like wind patterns.

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9
Q

Exotic species

A

Any species living outside its native range without human interference. Most exotic species are NOT invasive.

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10
Q

How do invasive species get introduces

A

Trade
Military
Recreation

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11
Q

Tens rule

A

About 1-10 species escape to the wild
Only 1-10 of those become established
Only 1-10 of those become invasive

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12
Q

What is the mid evil warm period

A

It was a time long ago that was warmer than it is now. They found high carbon levels deep in ice burgs.

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13
Q

Intermediate disturbance hypothesis

A

A moderate level of disturbance = more diversity and more species

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