FOREST ECOLOGY
FOREST SUCCESSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Growth in area where a field has been abandoned
|
|
|
Growth in an area where a surface mine is no longer used
|
|
|
Growth in an area where a forest has been cleared
|
|
|
Growth in an area where a glacier has receded (retreats) in the soil3) Small trees and shrubs (bushes) appear and is where a community is stable and has maximum biodiversity.
|
Detailed explanation-1: -Primary succession happens when a new patch of land is created or exposed for the first time. This can happen, for example, when lava cools and creates new rocks, or when a glacier retreats and exposes rocks without any soil. During primary succession, organisms must start from scratch.
Detailed explanation-2: -A good example of a primary succession is the change in the plant community that followed the retreat of a glacier in Glacier Bay, Alaska, over the last 200 years.
Detailed explanation-3: -Primary succession follows the formation of a totally new habitat, such as when a lava flow or a receding glacier creates or reveals new land which is devoid of soil or vegetation.
Detailed explanation-4: -Primary succession occurs when disturbances (such as glacial advances and retreats, volcanoes, earthquakes, land-slides, scouring floods, or very hot-burning fires) remove the soil and organisms from a site, leaving only bare rock, gravel, silt, or sand.