Factors that affect Populations in Ecosystems

The gradual process by which ecosystems change and develop over time. Nothing remains the same and habitats are constantly changing.

• Ecological Succession
• Ecology Success
• Ecological Change
• Ecological Stewardship

A hardy species which are the first to colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession

• Pioneer Succession
• Pioneer Species
• Pillager Species
• Ecological Species

The series of community changes which occur on an entirely new habitat which has never been colonized before (Examples include an area where there was a lava flow or area left from retreated glacier, is deposited.)

• Secondary Succession
• Secondary Stewardship
• Primary Succession
• Primary Selection

The series of community changes which take place on a previously colonized, but disturbed or damaged habitat.  (Examples include areas which have been cleared of existing vegetation (such as after clear-cutting a forest) and destructive events such as fires.)

• Primary Selection
• Secondary Stewardship
• Primary Succession
• Secondary Succession

A  stable group of plants and animals that is the end result of the succession process

• Stable Community
• Secondary Community
• Climax Community
• Primary Community

An area where there is no soil, the soil must be created, is going through

• Secondary Succession
• Primary Succession
• Never going to become an ecosystem
• Primary Change

An area that had living things but went through a disturbance, like a forest fire, is going through

• Secondary Succession
• Primary Succession
• Never going to become an ecosystem
• Secondary Change

Species such as lichens and moss are the first to colonize an area during

• Primary Succession
• Secondary Succession

Annual weeds and grasses are the first species to colonize an area during

• Primary Succession
• Secondary Succession

Which of the following organisms are not considered pioneer species:

• mosses
• lichens
• trees
• weeds