3.2 Flashcards
Ecological succession
Transition in species composition over-time
Primary succession
No soil then bacteria, grasses and small plants start growing
Secondary succession
If social is still intact after disturbance
Pioneer species
species that first colonize new habitats created by disturbance
Seral stages
From pioneer species to climax
Climax community
Plants remain stable
Species Richness
Total number of species present in the community
Species Evenness
The relative distribution of individuals among the species present
Genetic diversity
The biological variation that occurs within species
Ecological diversity
Presence of diverse species in a huge population
Keystone vs invasive
Keystone maintains biodiversity Invasive is non naitve and tends to upset a community