7. components of biodiversity Flashcards

1
Q

what are the 3 components of biodiversity

A

-genetic diversity
-species diversity
-ecosystem diversity

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2
Q

describe genetic diversity

A

The number and frequency of all the alleles within a population.

If one population of a species dies out then the species may have lost some of its genetic diversity, and this may limit its ability to adapt to changing conditions

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3
Q

describe species diveristy

A

Comprises the number of different species in an ecosystem (the species richness) and the proportion of each species in the ecosystem (the relative abundance).

A community with a dominant species has a lower species diversity than one with the same species richness but no particularly dominant species

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4
Q

describe ecosystem diveristy

A

Refers to the number of distinct ecosystems within a defined area

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5
Q

Explain why the death of one population in an area may limit the population’s ability to adapt to changing conditions

A

if one population dies out then the species may lose some of it’s genetic diversity which will make it harder to adapt to changing conditions

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6
Q

describe species richness

A

Species richness means the number of different species in one area.

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7
Q

describe species relative abudance

A

refers to the proportion of each species in an ecosystem

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