Measuring Biodiversity
Measure of diversity that considers both richness and evenness of species
What is Simpson's Diversity Index
Uses a random number generator
What is random sampling?
When energy is passed through a series of animals.
What is a food chain?
A role and space occupied by an organism
What is an ecological niche?
Number of different species in an ecosystem
What is species abundance?
Samples taken from uniform intervals
What is systematic sampling?
Absorbs nitrogen (N2) from atmosphere and converts to nitrates (NO3-)
What are nitrogen-fixing bacteria?
No two species can occupy exactly the same niche
What is the competitive exclusion principle?
The probability that a species will be found in a single quadrat
What is percentage frequency?
Identifies different areas in an ecosystem that are sampled separately
What is stratified sampling?
The rate at which solar energy is converted to photosynthetic products
What is Gross Primary Productivity (GPP)?
unique and crucial role in an ecosystem
What is a keystone species?
Genetic, Species & Ecosystem
What are three levels of biodiversity?
Considers: size & number of samples, random number generator, counting criteria, calibrating equipment
What is minimising bias?
Energy available to be passed on by producers to Primary consumers
What is Net Primary Production (NPP)?
used to estimate mobile species population.
What is the Lincoln Index?
Total number of individuals in the ecosystem
What is N?
Metabolism (heat) & detritus (uneaten portion or waste)
What is energy loss from a trophic level?
population levels off near carrying capacity.
What is logistic population growth?