Dimensions of Biodiversity
The variety and variability among organisms across genetic, taxonomic, phylogenetic, and functional dimensions
What is biodiversity?
Number of species found within a habitat or local site
What is alpha diversity?
What is a diversity index?
Number of species in a sample
What is richness?
What are species area relationships?
Measures richness and evenness
What is taxonomic diversity?
Measure of the difference in species composition or species turnover between multiple sites in a region
What is Beta diversity?
These are the most common diversity indices used in ecology.
What are Shannon's and Simpson's?
Compares the similarity of the population size of each species present
What is evenness?
Larger areas can support ____ populations.
What is larger?
Measure of biodiversity based on phylogeny
What is phylogenetic diversity?
Measure of species richness in a region
What is gamma diversity?
This diversity measure typically ranges from 0-4.5
What is Shannon's Entropy/Shannon's diversity?
This tool allows for measuring, comparing, and understanding species richness.
What is species-individual curve?
Plotted number of species in each abundance class.
What is species abundance distribution?
Different feeding mechanisms, different methods of motility, and variation in secondary metabolite production are all forms of this type of diversity.
What is functional diversity?
This is the measure of the total amount of species change between communities or along environmental gradients
What is absolute species turnover?
In this diversity index, higher values indicate lower diversity.
What is Simpson's Dominance Index?
What is 1985?
This hypothesis details that higher speciation occurs in the tropics because of warmer temperature and lower extinction rates are present because of a more stable climate.
Biodiversity is often quantified using these.
What are specific statistical indices?
Alpha diversity does not account for this metric.
What is relative abundance?
These diversity indices is less sensitive to species richness.
What are Simpson's Indices?
_____ show a curve of this general shape when discussing species accumulation curves.
What is a community?
Species abundance distribution curves form this frequency distribution.
What is modified negative binomial frequency distribution?