Systematics Based On Evolutionary Relationships ( Cladistics And Phylogeny ) Flashcards
Types of Diversity
Genetic Diversity
Species Diversity
Ecosystem Diversity
Diversity of genes within a species
Genetic diversity
Diversity among species in an ecosystem
Species diversity
Diversity of a habitat in a given unit area
Ecosystem diversity
The most precise and specific measure
of biodiversity is
Genetic Diversity or genetic variation within a species
What do genetic diversity/ genetic variation measure of diversity do?
looks at differences
among individuals within a population
The term biodiversity Usually refers
to
Species diversity
At the broadest most encompassing level.
we have
Ecosystem diversity
What does biologists look at the many types of
Functional units formed by living
communities interacting with their
environments.
Diversity may be measured at different scales. These are
three indices used by ecologists:
Alpha diversity
Beta diversity
Gamma diversity
Refers to dliversity within a particular
area, community, or ecosystem, and is measured by
counting the number of taxa within the ecosystem
(Usually species)
Alpha diversity
Is species diversity between ecosystems
this involves comparing the number of taxa that are
unique to each of the ecosystems
Beta diversity
Is a measurement of the overall
diversity for different ecosystems within a region,
Gamma diversity
Systematists have
developed different approaches to show
relationships among organisms. The most
commonly used is
Cladistics
The relationship among organisms are shown in a
Cladogram