3.2 Study Guide Flashcards
Definition of Ecological Succession:
The transition in species composition over time.
Definition of Primary Succession:
Newly formed rock/land is colonized by living things for the first time.
Definition of Secondary Succession
When a climax community is impacted by a disturbance and rebuilt.
Definition of Pioneer Species
Low-growing plants that appear in the first stages of succession.
Definition of Seral Stages
Fast-growing plants, bushes, shrubs, and small trees usually mark the midpoint in the succession series.
Definition of Climax Community
Matured ecosystem is established, many years since succession began.
Definition of Species Richness
The number of different species in an area.
Definition of Species Evenness
How even species are spread out in an area.
Definition of Genetic Diversity
The biological variation that occurs within species.
Definition of Ecological Diversity
The largest scale of biodiversity.
Definition of Keystone Species
An organism that helps hold the ecosystem together.
Definition of Invasive Species
An organism that is not native to an area.
What is the difference between primary and secondary succession?
Primary succession is the first time that an ecosystem has succeeded and secondary succession is an ecosystem that had already climaxed in the past but was disturbed and is regrowing.
How do Keystone Species affect biodiversity?
maintain the local biodiversity of an ecosystem, influencing the abundance and type of other species in a habitat
How do Invasive Species affect Biodiversity?
They affect bioversity by adding more species to an area, but can also very majorly affect an ecosystem in a negative manner.
