Biodiveristy Flashcards

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1
Q

Biodiversity

A

Variety of living organism in an area

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2
Q

Species

A

Group of similar organisms able to reproduce to give fertile offspring

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3
Q

Habitat

A

Area inhabited by a species

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4
Q

Factors affecting habitat

A

Abiotic- physical (soil, temp )

Biotic - living (food availability , predators prescence)

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5
Q

Biological diversity

A

Number of individual and in how many different places

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6
Q

Genetic diversity

A

Genetic differences within a species (variation of alleles )

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7
Q

Species richness

A

How many diff species are present

Count number of diff species present

Use random quadrant or transect

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8
Q

Species eveness

A

How evenly represented the species are

Use random quadrant and count number of each species

Calculate relative abundance

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9
Q

Simpsons index

A

D : diversity of habitat

n; Total number of organism of particular species

N- total number of organisms of all species

Higher = more diverse

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10
Q

Why we should conserve species

A

Economic :
•help us develop technology
•reduce soil depletion costs
•provide resources

Ecological:
•prevent disruption of food chain 
•drugs 
•fuels 
•food 

Ethical:
•all living organism have a right to live

Aesthetic:
•areas with more biodiversity provide attractive landscapes
• no human design can compete with natural variations

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11
Q

Human activities that affect nature/ bio diversity

A
  • hunting
  • killing threats to humans (Mosquitos)
  • killing to remove competitions for our food (pests)
  • pollution
  • habitat destruction
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12
Q

Habitat diversity

A

Number of different habitats in an area

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13
Q

Species diversity abundance

A

Differences between species

Structural functional

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