Genetics Population Evolution Ecosystem Definitions

3.7 spec

ecosystem

dynamic system made up of a community of biotic factors interacting with abiotic components of their environment

community

all the populations of different species living and interacting in a particular habitat or area at the same time

population

a group of organisms of the same species occupying a particular space at a particular time that can potentially interbreed

habitat

physical place or local environment where an organism naturally lives characterized by specific abiotic/biotic factors

abiotic factor

non-living factor including temperature, pH, light intensity, water availability

biotic factor

living factors including interspecies competition, intraspecies competition, habitat availability, food availability, diseases, parasites

niche

specific role of a species within its ecosystem

competitive exclusion

two different species cannot occupy the same ecological niche in the same habitat indefinitely

species richness

number of different species within a community

genetic diversity

number of different alleles

species abundance

number of organisms of a specific species