How Ecosystems Change

Ecological Succession

• a common type of succession that occurs on a surface where an ecosystem has previously existed

• the first organisms to colonize any newly available area and begin the process of ecological succession

• a final and stable community

• a type of succession that occurs on a surface where no ecosystem existed before

• a gradual process of change and replacements of the types of species in a community

Secondary Succession

• a common type of succession that occurs on a surface where an ecosystem has previously existed

• the first organisms to colonize any newly available area and begin the process of ecological succession

• a final and stable community

• a type of succession that occurs on a surface where no ecosystem existed before

• a gradual process of change and replacements of the types of species in a community

Tags

NGSS.MS-LS2-4

Pioneer Species

• a common type of succession that occurs on a surface where an ecosystem has previously existed

• the first organisms to colonize any newly available area and begin the process of ecological succession

• a final and stable community

• a type of succession that occurs on a surface where no ecosystem existed before

• a gradual process of change and replacements of the types of species in a community

Climax Community

• a common type of succession that occurs on a surface where an ecosystem has previously existed

• the first organisms to colonize any newly available area and begin the process of ecological succession

• a final and stable community

• a type of succession that occurs on a surface where no ecosystem existed before

• a gradual process of change and replacements of the types of species in a community

Tags

NGSS.MS-LS2-4

Old-Field Succession

• a common type of succession that occurs on a surface where an ecosystem has previously existed

• the first organisms to colonize any newly available area and begin the process of ecological succession

• a final and stable community

• a type of succession that occurs on a surface where no ecosystem existed before

• a type of succession that occurs on abandoned farmland

What type of vegetation would you expect to find on an abandoned farm that has remained undisturbed for 150 years

• short grasses

• shrubs

• young pine trees

• tall, mature oak trees

Tags

NGSS.MS-LS1-5

What type of vegetation would you expect to find on newly formed volcanic islands

• lichens

• short grasses

• shrubs

• young trees

Tags

NGSS.MS-ESS2-2

What type of succession occurs after a natural process such as volcanic eruption or flood

• primary succession

• secondary succession

• old-field succession

• climax community

The eruption of Mount St. Helens was followed by

• primary succession

• secondary succession

• old-field succession

• forest successin

Primary Succession

• a common type of succession that occurs on a surface where an ecosystem has previously existed

• the first organisms to colonize any newly available area and begin the process of ecological succession

• a final and stable community

• a type of succession that occurs on a surface where no ecosystem existed before

• a gradual process of change and replacements of the types of species in a community