Biodiversity Measures by Alex Gordon https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u Definitions en-us 2020-10-11 19:44:35 UTC 2025-12-14 18:27:41 UTC hello@padlet.com https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820549843 Species richness
Species richness is the number of different species represented in an ecological community, landscape or region.
Species diversity
Species diversity is the number of different species that are represented in a given community.
Percentage cover
Percent cover is an efficient means of understanding the relative abundance and contribution to the ecosystem made by different plants
Percentage frequency
Percentage frequency is the probability that a species will be found within a single quadrat.
Simpson's Diversity Index
Simpson's diversity index (SDI) measures community diversity. Although it's commonly used to measure biodiversity, it can also be used to gauge diversity differences in populations in schools, communities and other locations.]]> 2020-10-12 03:55:03 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820549843 https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820552259 2020-10-12 03:56:49 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820552259 https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820552427 species richness is when the animals have a lot of money]]> 2020-10-12 03:56:57 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820552427 https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820552984 -Percentage Coverage
An indication of how much area (i.e. A quadrant) is occupied by a species. The percentage coverage is useful when its not possible to identify separate individuals.

]]> 2020-10-12 03:57:20 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820552984 Simpsons Diversity Index https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820553331 represents the probability that 2 individuals randomly selected from a sample will belong to different species (values range from 0-1)]]> 2020-10-12 03:57:35 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820553331 https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820553737 Species richness is the number of different species represented in an ecological community, landscape or region. 

]]> 2020-10-12 03:57:53 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820553737 Biodiversity - Genetic diversity - Species diversity - Ecosystem diversity The more diversity, the more stable an ecosystem is. Species richness: measure of the number of species compared to the number of individuals within the sample https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820556276 Species diversity can be measured in terms of 
-Species richness
-Evenness (relative species abundance)
-Percentage coverage
-Percentage frequency
-Simpsons diversity index (SDI)

S = s/N1/2
S= species richness 
s = total number of different species 
N= total number of organisms 

]]> 2020-10-12 03:59:47 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820556276 https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820557623 2020-10-12 04:00:49 UTC https://padlet.com/gordonpinerivers/mp64p6be9o1uss9u/wish/820557623