Question

regrowth of grasses,ferns,wildflowers,and saplings after a forest fire is an example of

Answer 1

Regrowth of grasses, ferns, wildflowers, and saplings after a forest fire is an example of secondary succession.

Secondary succession is one of the two main forms of ecological succession of plant life that is initiated by an occurrence such as harvesting, or forest fire, that has a negative impact or diminishes  an already established ecosystem such as a forest or a wheat field to a lower number of species. Several factors such as initial composition, trophic interaction, and competition-colonization trade-offs can influence secondary succession.

Answer 2

The regrowth of grasses, ferns, wild flowers and saplings after a forest fire is an example of secondary succession.

Secondary succession is a type of ecological succession which takes place in an area after the destruction of previously living community.  

Further Explanation:

Ecological succession is defined as the process which involves a change in ecosystems with time. In this process, the habitat of the organisms remains changing with time and climate conditions. Changes that take place during ecological succession are as follows:

(a) Biomass production increases

(b) Process of soil differentiation increases

(c) Species diversity increases

(d) Humus content of the soil also increases

There are two types of ecological succession such as primary and secondary ecological succession.

(i) Primary ecological succession:  

It is a type of ecological succession that takes place in a sterile or primarily bare region. For example: sand dunes, new cooled lava sediments, igneous rock and so on.

(ii) Secondary ecological succession:

Secondary succession is a type of ecological succession that takes place in a secondarily bare region. It is due to destruction of the previously living community.

The destruction is due to forest fire, major flood, landslide, drought, etc. Such areas are biologically fertile and succession also completed quickly. The submerged underground parts like some seeds, animal remains or invaders quickly form new community in favourable conditions. This type of succession takes approximately 50-100 years for completion in grasslands whereas 100-200 years in case of forests.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Ecosystem

Keywords:

Primary succession, secondary succession, ecological succession, environmental issues, grasslands, drought, flood, earthquake.