What is diversity Flashcards

(10 cards)

1
Q

what is diversity

A

the comparison of the variety of species in an area
measure of difference among or btwn two or more entities
measured in richness and eveness

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2
Q

How is diversity measured

A

It is a tool to measure difference in a community
measured in evenness and richness

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3
Q

can you generate a usable def of diversity

A

Measure of difference or uniqueness within a community
has many diff scales

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4
Q

what is diff between alpha, beta and gamma diversity

A

alpha- small area, nums of types of species
beta - compare 2 area, num of speci unique to each eocosys
gamma- total num of species in large region

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5
Q

richness vs evenness in terms of diversity

A

richness - the amt of diff types of species
evenness - the amount of each species

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6
Q

what is bio indicator species
what makes a good one

A

One that replicates fast and is sensitive to environmental conditions.
easy to find
shouldn’t migrate bc then we can’t see it change
ex hydra, freshwater shimp -good
rat tailed maggot - bad

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7
Q

how is diverstiy linked to bio org or complexity of life

A

through the different interactions of species. The more diversity there is the more complex it is.
its harder to organize when theres lots of diff species/variation

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8
Q

simpson vs shannon diversity index

A

simpson - accounts for ruchness and evenness and the prob of 2 samples being from diff species
Shannon-just richness and evenness, has a log

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9
Q

What do high, low values of simpson’s index mean

A

high - (high richness, high even) healthy, diverse, niches filled, low competition
low - low richness, even, few potential niches, only few species thrive

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10
Q
A
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