Diversity within a Community Flashcards
(13 cards)
What is biodiversity?
Biodiversity is the variety of living organisms in a particular area. It includes species diversity, genetic diversity, and ecosystem diversity
What is species diversity?
Species diversity is the number of different species and the number of individuals of each species within one community
What is genetic diversity?
Genetic diversity is the variety of genes possessed by individuals within a population of a species
What is ecosystem diversity?
Ecosystem diversity is the range of different habitats in an area, from a small local habitat to the whole Earth
What is species richeness?
Species richness is a measure of species diversity. It refers to the number of different species in a particular area at a given time
How can two communities have the same species richness but differ in species diversity?
Two communities can have the same number of species, but if one is dominated by one species and the other has species in equal proportion, their species diversity differs
What is one way of measuring species diversity?
By using a diversity index, which considers both the number of species and the abundance of each species
What is the formula for the index of diversity (d)?
d= N (N-1) divided by the sum of n (n-1)
In the formula of index of diversity, what does d represent?
d is the index of diversity - a measure of species diversity in a community
In the formula of index of diversity, what does the N represent?
N is the total number of organisms of all species in the community
Why is the index of diversity useful?
It provides a quantitative measure of species diversity that accounts for both richness and abundance, helping to compare biodiversity between communities
In the formula of index of diversity, what does the n represent?
n is the total number of organisms of each individual species
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