10.2 Diversity within a community Flashcards

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1
Q

Definition of biodiversity
What are its 3 components

A

Number and variety of living organisms in a particular area

Made up of…
- Species diversity
- Genetic diversity
- Ecosystem diversity

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2
Q

What is species diversity

A

Refers to number of different species and number of individuals of each species within a community

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3
Q

What is genetic diversity

A

variety of genes possessed by the individuals that make up a population of a species

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4
Q

What is ecosystem diversity

A

Range of different habitats, eg from a small local habitat to the whole earth

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5
Q

What is species richness

A

The number of different species in a particular area at a given time.

It doesn’t take into account the number of individuals in each species however

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6
Q

What is the equation for measuring species diversity

The higher the value of d, the more diverse the species is

A

d = N(N-1) / ∑n(n-1)

So N is total number of organisms of all species
And n is total number of organisms of each species

∑ is the sum of members of individual species

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7
Q

what is the difference between species richness and the diversity index

A

The diversity index takes into account the numbers of individuals in each species, whilst species richness only takes into account the number of different species in the area

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8
Q

What is a community

A

All the different species that live in an area and interact with eachother

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