2.1.1: Definitions
The starting point for understanding Species, Populations and Communities is knowing what those words mean in Ecology.
Species
A group of organisms that interbreed and produce fertile offspring.
Three very different species in the images above
Population
A group of organisms of the same species living in the same area at the same time, and which are capable of interbreeding.
Community
A group of populations living and interacting with each other in a common habitat.