3.2 Community Composition Flashcards
(14 cards)
Definition of ecological succession
Transition in species composition over time
Definition of primary succession
Begins with virtually lifeless area without soil to climax community
Definition of secondary succession
Begins with a base soil and turns into climax community
Definition of pioneer species
First species to inhabit an area
Definition of seral stages
The changes the life forms go through as they adjust
Definition of climax community
The final stage of succession where the community has reached its full potential.
Definition of species richness
Number of different types of species in an area
Definition of species evenness
The proportions of species in an area
Definition of genetic diversity
The range of different inherited traits within a species
Definition of ecological diversity
The range of habitat types
Difference between primary and secondary succession
Primary starts with a virtually lifeless area while secondary starts with a base layer of soil but no organisms.
Calculate Shannon-Wiener Index of 4 and 6
0.68
